JP3655463B2 - Process for producing nitroguanidines - Google Patents
Process for producing nitroguanidines Download PDFInfo
- Publication number
- JP3655463B2 JP3655463B2 JP08684298A JP8684298A JP3655463B2 JP 3655463 B2 JP3655463 B2 JP 3655463B2 JP 08684298 A JP08684298 A JP 08684298A JP 8684298 A JP8684298 A JP 8684298A JP 3655463 B2 JP3655463 B2 JP 3655463B2
- Authority
- JP
- Japan
- Prior art keywords
- group
- methyl
- tetrahydrofuryl
- yield
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 26
- IDCPFAYURAQKDZ-UHFFFAOYSA-N 1-nitroguanidine Chemical class NC(=N)N[N+]([O-])=O IDCPFAYURAQKDZ-UHFFFAOYSA-N 0.000 title description 10
- -1 amine salt Chemical class 0.000 claims description 65
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 15
- 150000003839 salts Chemical class 0.000 claims description 10
- 229910021529 ammonia Inorganic materials 0.000 claims description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 6
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 5
- 150000003335 secondary amines Chemical class 0.000 claims description 5
- 125000003342 alkenyl group Chemical group 0.000 claims description 4
- 125000000304 alkynyl group Chemical group 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 2
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 125000006165 cyclic alkyl group Chemical group 0.000 claims description 2
- 125000003718 tetrahydrofuranyl group Chemical group 0.000 claims description 2
- 150000003863 ammonium salts Chemical class 0.000 claims 1
- 125000002971 oxazolyl group Chemical group 0.000 claims 1
- 125000004076 pyridyl group Chemical group 0.000 claims 1
- 125000000335 thiazolyl group Chemical group 0.000 claims 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 51
- 238000006243 chemical reaction Methods 0.000 description 47
- 239000000243 solution Substances 0.000 description 39
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 33
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 30
- 238000004128 high performance liquid chromatography Methods 0.000 description 30
- 230000000704 physical effect Effects 0.000 description 28
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 21
- 239000000706 filtrate Substances 0.000 description 16
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 15
- 239000013078 crystal Substances 0.000 description 15
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000000203 mixture Substances 0.000 description 13
- 238000001914 filtration Methods 0.000 description 12
- SDVNYWHHTVSPHE-UHFFFAOYSA-N 1,2-dimethyl-3-nitro-1-(oxolan-3-yl)guanidine Chemical compound [O-][N+](=O)N=C(NC)N(C)C1CCOC1 SDVNYWHHTVSPHE-UHFFFAOYSA-N 0.000 description 11
- 239000000126 substance Substances 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 239000002253 acid Substances 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 239000012044 organic layer Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 6
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 6
- 238000006460 hydrolysis reaction Methods 0.000 description 6
- 239000000376 reactant Substances 0.000 description 6
- ZVQCVBXEODEXGV-UHFFFAOYSA-N 1-(2-chloro-1,3-thiazol-5-yl)-1,2-dimethyl-3-nitroguanidine Chemical compound [O-][N+](=O)NC(=NC)N(C)C1=CN=C(Cl)S1 ZVQCVBXEODEXGV-UHFFFAOYSA-N 0.000 description 5
- AGLRFSLOXTZVOT-UHFFFAOYSA-N 1-(6-chloropyridin-3-yl)-1,2-dimethyl-3-nitroguanidine Chemical compound [O-][N+](=O)NC(=NC)N(C)C1=CC=C(Cl)N=C1 AGLRFSLOXTZVOT-UHFFFAOYSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000011324 bead Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 230000007062 hydrolysis Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 5
- 229910002027 silica gel Inorganic materials 0.000 description 5
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 4
- LNRXEGZQXZAVHB-UHFFFAOYSA-N 1,2-dimethyl-1-(5-methyloxolan-3-yl)-3-nitroguanidine Chemical compound [O-][N+](=O)NC(=NC)N(C)C1COC(C)C1 LNRXEGZQXZAVHB-UHFFFAOYSA-N 0.000 description 4
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 4
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 238000006386 neutralization reaction Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 150000003141 primary amines Chemical class 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 3
- 239000003905 agrochemical Substances 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 3
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000002917 insecticide Substances 0.000 description 3
- 239000000543 intermediate Substances 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- RHUYHJGZWVXEHW-UHFFFAOYSA-N 1,1-Dimethyhydrazine Chemical compound CN(C)N RHUYHJGZWVXEHW-UHFFFAOYSA-N 0.000 description 2
- XVAWQQXJAPKCFF-UHFFFAOYSA-N 1,3-dimethyl-2-nitro-1-(oxolan-2-yl)guanidine Chemical compound O1C(CCC1)N(C(NC)=N[N+](=O)[O-])C XVAWQQXJAPKCFF-UHFFFAOYSA-N 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- KDSNLYIMUZNERS-UHFFFAOYSA-N 2-methylpropanamine Chemical compound CC(C)CN KDSNLYIMUZNERS-UHFFFAOYSA-N 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 2
- 125000001494 2-propynyl group Chemical group [H]C#CC([H])([H])* 0.000 description 2
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- AFBPFSWMIHJQDM-UHFFFAOYSA-N N-methylaniline Chemical compound CNC1=CC=CC=C1 AFBPFSWMIHJQDM-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical compound NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine hydrate Chemical compound O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 description 2
- 125000004092 methylthiomethyl group Chemical group [H]C([H])([H])SC([H])([H])* 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- DPBLXKKOBLCELK-UHFFFAOYSA-N pentan-1-amine Chemical compound CCCCCN DPBLXKKOBLCELK-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 150000003918 triazines Chemical class 0.000 description 2
- XFNJVJPLKCPIBV-UHFFFAOYSA-N trimethylenediamine Chemical compound NCCCN XFNJVJPLKCPIBV-UHFFFAOYSA-N 0.000 description 2
- JHPBZFOKBAGZBL-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylprop-2-enoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)=C JHPBZFOKBAGZBL-UHFFFAOYSA-N 0.000 description 1
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- DIIIISSCIXVANO-UHFFFAOYSA-N 1,2-Dimethylhydrazine Chemical compound CNNC DIIIISSCIXVANO-UHFFFAOYSA-N 0.000 description 1
- CHRJZRDFSQHIFI-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;styrene Chemical compound C=CC1=CC=CC=C1.C=CC1=CC=CC=C1C=C CHRJZRDFSQHIFI-UHFFFAOYSA-N 0.000 description 1
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- PVOAHINGSUIXLS-UHFFFAOYSA-N 1-Methylpiperazine Chemical compound CN1CCNCC1 PVOAHINGSUIXLS-UHFFFAOYSA-N 0.000 description 1
- CDULGHZNHURECF-UHFFFAOYSA-N 2,3-dimethylaniline 2,4-dimethylaniline 2,5-dimethylaniline 2,6-dimethylaniline 3,4-dimethylaniline 3,5-dimethylaniline Chemical group CC1=CC=C(N)C(C)=C1.CC1=CC=C(C)C(N)=C1.CC1=CC(C)=CC(N)=C1.CC1=CC=C(N)C=C1C.CC1=CC=CC(N)=C1C.CC1=CC=CC(C)=C1N CDULGHZNHURECF-UHFFFAOYSA-N 0.000 description 1
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 1
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 description 1
- 125000002941 2-furyl group Chemical group O1C([*])=C([H])C([H])=C1[H] 0.000 description 1
- ASUDFOJKTJLAIK-UHFFFAOYSA-N 2-methoxyethanamine Chemical compound COCCN ASUDFOJKTJLAIK-UHFFFAOYSA-N 0.000 description 1
- 125000004105 2-pyridyl group Chemical group N1=C([*])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 description 1
- 125000004179 3-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C(Cl)=C1[H] 0.000 description 1
- 125000003682 3-furyl group Chemical group O1C([H])=C([*])C([H])=C1[H] 0.000 description 1
- 125000003349 3-pyridyl group Chemical group N1=C([H])C([*])=C([H])C([H])=C1[H] 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- WJYIASZWHGOTOU-UHFFFAOYSA-N Heptylamine Chemical compound CCCCCCCN WJYIASZWHGOTOU-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 1
- GMPKIPWJBDOURN-UHFFFAOYSA-N Methoxyamine Chemical compound CON GMPKIPWJBDOURN-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- FCLZCOCSZQNREK-UHFFFAOYSA-N Pyrrolidine, hydrochloride Chemical compound Cl.C1CCNC1 FCLZCOCSZQNREK-UHFFFAOYSA-N 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002152 alkylating effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 125000000440 benzylamino group Chemical group [H]N(*)C([H])([H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical class NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229920001429 chelating resin Polymers 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000007810 chemical reaction solvent Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000001923 cyclic compounds Chemical class 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 125000000031 ethylamino group Chemical group [H]C([H])([H])C([H])([H])N([H])[*] 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000717 hydrazino group Chemical group [H]N([*])N([H])[H] 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- YAMHXTCMCPHKLN-UHFFFAOYSA-N imidazolidin-2-one Chemical compound O=C1NCCN1 YAMHXTCMCPHKLN-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical compound CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- MROAQUNKLFXYQN-UHFFFAOYSA-N methanamine;sulfuric acid Chemical compound NC.OS(O)(=O)=O MROAQUNKLFXYQN-UHFFFAOYSA-N 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- NQMRYBIKMRVZLB-UHFFFAOYSA-N methylamine hydrochloride Chemical compound [Cl-].[NH3+]C NQMRYBIKMRVZLB-UHFFFAOYSA-N 0.000 description 1
- GRKXKNLRBZVLSN-UHFFFAOYSA-N methylamino acetate Chemical compound CNOC(C)=O GRKXKNLRBZVLSN-UHFFFAOYSA-N 0.000 description 1
- 125000000250 methylamino group Chemical group [H]N(*)C([H])([H])[H] 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- HDZGCSFEDULWCS-UHFFFAOYSA-N monomethylhydrazine Chemical compound CNN HDZGCSFEDULWCS-UHFFFAOYSA-N 0.000 description 1
- BGEHHDVYQRNMJB-UHFFFAOYSA-N morpholine;sulfuric acid Chemical compound OS([O-])(=O)=O.C1COCC[NH2+]1 BGEHHDVYQRNMJB-UHFFFAOYSA-N 0.000 description 1
- KFIGICHILYTCJF-UHFFFAOYSA-N n'-methylethane-1,2-diamine Chemical compound CNCCN KFIGICHILYTCJF-UHFFFAOYSA-N 0.000 description 1
- KVKFRMCSXWQSNT-UHFFFAOYSA-N n,n'-dimethylethane-1,2-diamine Chemical compound CNCCNC KVKFRMCSXWQSNT-UHFFFAOYSA-N 0.000 description 1
- RIWRFSMVIUAEBX-UHFFFAOYSA-N n-methyl-1-phenylmethanamine Chemical compound CNCC1=CC=CC=C1 RIWRFSMVIUAEBX-UHFFFAOYSA-N 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- XYEOALKITRFCJJ-UHFFFAOYSA-N o-benzylhydroxylamine Chemical compound NOCC1=CC=CC=C1 XYEOALKITRFCJJ-UHFFFAOYSA-N 0.000 description 1
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229940100684 pentylamine Drugs 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 125000000587 piperidin-1-yl group Chemical group [H]C1([H])N(*)C([H])([H])C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- JKANAVGODYYCQF-UHFFFAOYSA-N prop-2-yn-1-amine Chemical compound NCC#C JKANAVGODYYCQF-UHFFFAOYSA-N 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 125000006308 propyl amino group Chemical group 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- BHRZNVHARXXAHW-UHFFFAOYSA-N sec-butylamine Chemical compound CCC(C)N BHRZNVHARXXAHW-UHFFFAOYSA-N 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 description 1
- NYBWUHOMYZZKOR-UHFFFAOYSA-N tes-adt Chemical class C1=C2C(C#C[Si](CC)(CC)CC)=C(C=C3C(SC=C3)=C3)C3=C(C#C[Si](CC)(CC)CC)C2=CC2=C1SC=C2 NYBWUHOMYZZKOR-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- BRNULMACUQOKMR-UHFFFAOYSA-N thiomorpholine Chemical compound C1CSCCN1 BRNULMACUQOKMR-UHFFFAOYSA-N 0.000 description 1
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 1
- 150000004992 toluidines Chemical class 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Landscapes
- Thiazole And Isothizaole Compounds (AREA)
- Furan Compounds (AREA)
- Pyridine Compounds (AREA)
Description
【0001】
【発明の属する技術分野】
本発明はニトログアニジン類の新規な製造法に関する。
本発明の方法は農薬(特に殺虫剤)またはその中間体として利用される化合物を製造する際に非常に有用である。
【0002】
【従来の技術】
ある種のニトログアニジン類が農薬(特に殺虫剤)またはその中間体として有用であることはよく知られている(特開平2−288860号公報、特開平3−109374号公報、特開平3−157308号公報、特開平7−179448号公報等)。
【0003】
二置換ニトログアニジンの製造法としては以下のものが知られている。
【0004】
▲1▼1,3,5−三置換・2−ニトロイミノヘキサヒドロ−1,3,5−トリアジン類を酸類の存在下に加水分解して得る方法(特開平3−291267号公報、特開平4−330049号公報等)。
【0005】
【化3】
▲2▼ある種のイソチオウレアを経由する方法(特開平5−9173号公報)。
【0006】
【化4】
▲3▼ある種のジチオカルバミン酸誘導体を経由する方法(特開平4−120054号公報、特開平4−74158号公報)。
【0007】
【化5】
▲4▼1,2−二置換−3−ニトロイソチオウレア類を経由する方法(特開平2−88860号公報)。
【0008】
【化6】
▲5▼一置換ニトログアニジンを直接アルキル化する方法(特願平8−158146号公報)。
【0009】
【化7】
【0010】
【発明が解決しようとする課題】
上記のように1,3,5−三置換−2−ニトロイミノヘキサヒドロトリアジンを原料として二置換ニトログアニジンを製造する方法としては僅かに方法▲1▼が知られているのみであるが、方法▲1▼は酸類による加水分解反応である。
【0011】
一方、ニトログアニジン誘導体は水溶性が高いことがよく知られている。また、一般にニトログアニジン類の水溶解度は、中性条件より酸性条件の方が高い傾向にある。そのために、反応系に水または酸が存在すると単離操作の際に晶析収率の低下や抽出率の低下を招き、操作が煩雑になる傾向にあった。
【0012】
これを抑制するための中和を行うと、逆反応によりトリアジン類が再生するため、さらに操作が煩雑になる。
【0013】
本発明の目的は上記の加水分解による方法に代わる簡便な製造法を提供することにある。
【0014】
【課題を解決するための手段】
本発明者らは上記目的を達成するため鋭意検討した結果、1,3,5−三置換−2−ニトロイミノヘキサヒドロトリアジンの加水分解以外の方法を探索する過程において、酸加水分解とはメカニズムが異なり、酸を必要とせず、水も必要としない、アンモニア、一級または二級のアミンまたはそれらの塩と反応させる方法を見出し、本発明を完成させた。
【0015】
即ち、本発明は式(1)
【0016】
【化8】
(式中、Aは置換されていてもよい芳香族または非芳香族の炭化水素環、置換されていてもよい芳香族または非芳香族の複素環、水素原子、置換されていてもよいアルキル基、アルケニル基またはアルキニル基を示し、R1 は置換されていてもよい炭素数1から10の鎖状または環状のアルキル基を示し、R2 は水素原子、置換されていてもよい炭素数1から6のアルキル基、アルケニル基またはアルキニル基を示す。)で表される化合物をアンモニア、一級または二級のアミンまたはそれらの塩(ただし、尿素は除く。)と非水系で反応させることを特徴とする式(2)
【0017】
【化9】
(式中、A、R2 は上記の意味を示す。)で表されるニトログアニジン類の製造法である。
【0018】
【発明の実施の形態】
本発明に用いられる式(1)の化合物の置換基Aの典型的な例としては水素原子、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、t−ブチル基、ペンチル基、ヘキシル基、ビニル基、アリル基、プロパルギル基、ベンジル基、メトキシメチル基、メチルチオメチル基、トリフルオロメチル基、フェニル基、3−ニトロフェニル基、3−シアノフェニル基、3−クロロフェニル基、3−トリフルオロメチルフェニル基、シクロペンチル基、シクロヘキシル基、2−ピリジル基、3−ピリジル基、2−クロロ−5−ピリジル基、2−メチル−5−ピリジル基、2−メトキシ−5−ピリジル基、5−チアゾリル基、2−クロロ−5−チアゾリル基、2−メチル−5−チアゾリル基、2−クロロ−5−ピリミジル基、2−クロロ−5−オキサゾリル基、2−メチル−5−オキサゾリル基、2−フリル基、3−フリル基、2−テトラヒドロフリル基、3−テトラヒドロフリル基、2−メチル−4−テトラヒドロフリル基、2−エチル−4−テトラヒドロフリル基、2−イソプロピルテトラヒドロフリル基、2−t−ブチル−4−テトラヒドロフリル基、2,2−ジメチル−4−テトラヒドロフリル基等が挙げられる。
【0019】
R1 の典型的な例としてはメチル基、エチル基、n−プロピル基、イソプロピル基、n−ブチル基、sec−ブチル基、イソブチル基、t−ブチル基、ペンチル基、ヘキシル基、ヘプチル基、オクチル基、ノニル基、デシル基、シクロペンチル基、シクロヘキシル基、ベンジル基等が挙げられる。
【0020】
R2 の典型的な例としては水素原子、メチル基、エチル基、n−プロピル基、イソプロピル基、n−ブチル基、sec−ブチル基、イソブチル基、t−ブチル基、ペンチル基、ヘキシル基、シクロペンチル基、シクロヘキシル基、アリル基、プロパルギル基、メトキシメチル基、メチルチオメチル基等が挙げられる。
【0021】
本発明において使用される一級または二級アミンの典型的な例としてはメチルアミン、エチルアミン、n−プロピルアミン、イソプロピルアミン、n−ブチルアミン、イソブチルアミン、sec−ブチルアミン、t−ブチルアミン、ペンチルアミン、ヘキシルアミン、ヘプチルアミン、オクチルアミン、シクロヘキシルアミン、ベンジルアミン、アリルアミン、プロパルギルアミン、アニリン、フェニレンジアミン、トルイジン、キシリジン、エチレンジアミン、トリメチレンジアミン、ジメチルアミン、ジエチルアミン、ベンジルメチルアミン、N−メチルエチレンジアミン、N,N’−ジメチルエチレンジアミン、N−メチルアニリン、ピロリジン、ピペリジン、ピペラジン、N−メチルピペラジン、モルホリン、チオモルホリン、エタノールアミン、ジエタノールアミン、メトキシエチルアミン、アミノ酢酸メチル等のアミノ酸エステル、ヒドラジン、N−メチルヒドラジン、N,N−ジメチルヒドラジン、N,N’−ジメチルヒドラジン、ヒドロキシルアミン、メトキシアミン、ベンジルオキシアミン等が挙げられる。式(1)で表わされる化合物と反応させる化合物は、好ましくはアンモニアまたは脂肪族のアミンであり、特に好ましくは脂肪族の環状アミンである。
【0022】
一級または二級のアミンは溶媒に不溶な担体に一級または二級アミノ基を修飾した反応剤であってもよい。典型的な例を以下に挙げる。
【0023】
担体としては高分子化合物及びグラスビーズ等が挙げられる。高分子化合物担体を形成する単量体の具体的な例としてはスチレン、ジビニルベンゼン、ビニルピリジン等の芳香族ビニル化合物類、アクリル酸エステル類、メタクリル酸エステル類、アクリロニトリル、アクリルアミド等のアクリレート類、フェノール等のフェノール類、エチレンオキサイド、エチレンイミン等の環状化合物類、ビニルアルコール等が挙げられる。高分子化合物担体はこれらを単独または混合して重合させたものが使用できる。具体的な例としてはポリスチレン樹脂、アクリル酸エステル樹脂、メタクリル酸エステル樹脂、フェノール樹脂、ジビニルベンゼン樹脂、ジビニルベンゼン−スチレン共重合樹脂等が挙げられる。
【0024】
これらの高分子化合物担体またはグラスビーズに修飾される一級または二級アミノ基の具体的な例としては、アミノ基、メチルアミノ基、エチルアミノ基、プロピルアミノ基、ベンジルアミノ基、2−アミノエチルアミノ基、3−アミノプロピルアミノ基、ピペリジノ基、ヒドラジノ基等が挙げられる。これらの官能基と担体の間には適当なスペーサーを導入してもよい。
【0025】
これら溶媒に不溶な担体に一級または二級アミノ基を修飾した反応剤の具体例としては、アミノ基を有する陰イオン交換樹脂等が挙げられる。例えばバイエル社製レバチットOC1059、レバチットOC1065、レバチットR258−K、レバチットE82/81、三菱化学社製ダイヤイオンWA20、ダイヤイオンWA21、ダイヤイオンCR20、セパビーズFP−HA13、セパビーズFP−BA13、セパビーズFP−ZA13、ローム&ハース社製アンバーライトIRA6E、CPG社製アミノプロピル−CPG、チッソ社製アミノセルロファイン等が挙げられる。
【0026】
アンモニアまたはアミンは塩で使用することもできる。これらアミンと塩を形成する酸の具体的な例としては塩酸、硫酸、燐酸、炭酸等の鉱酸類、蟻酸、酢酸等の有機カルボン酸類、メタンスルホン酸、トルエンスルホン酸等の有機スルホン酸類等が挙げられる。これら塩類は無水でも、水和物でも使用できる。
【0027】
使用されるアンモニアまたはアミンの量は式(1)で表される化合物に対して1当量以上が好ましく、特に好ましくは2当量以上である。塩類の場合は式(1)で表される化合物に対して0.01当量以上が好ましく、特に好ましくは0.1当量以上である。
【0028】
反応は無溶媒で行うことも可能であるが、通常溶媒で希釈される。溶媒としてはテトラヒドロフラン、ジオキサン等のエーテル類、ジクロロメタン、ジクロロエタン等のハロゲン化炭化水素類、アセトン、メチルエチルケトン等のケトン類、アセトニトリル等のニトリル類、N,N−ジメチルホルムアミド、1,3−ジメチル−2−イミダゾリジノン、ジメチルスルホキシド、N−メチルピロリドン等の非プロトン性極性溶媒類、メタノール、エタノール、プロパノール、イソプロパノール、ブタノール、イソブタノール、エチレングリコール等のアルコール類が挙げられる。好ましくはジクロロメタン等のハロゲン化炭化水素またはアルコール類であり、特に好ましくはアルコール類である。これらの溶媒は任意の割合で混合物として使用することができる。
【0029】
反応温度は10℃以上が好ましく、特に好ましくは30乃至120℃である。反応時間は一般的に0.1時間乃至7日間であるが、好ましくは1乃至24時間である。
【0030】
反応は常圧、加圧のいずれでも実施できる。
【0031】
反応後の処理について常法に従って実施することが可能である。例えば必要に応じて塩類を濾過等で除去した後、冷却するか貧溶媒を添加し、晶析することによって取り出すことができる。また、必要に応じて塩類を濾過等で除去した後、反応液を濃縮することによって取り出すことができる。必要に応じて水洗や活性炭処理、再結晶等の精製を行い純度の高いものを得ることができる。
【0032】
式(1)および(2)のニトロイミノ基を有する化合物は異性体(syn−及びanti−異性体)または互変異性体として存在しうる。また式(1)、(2)においてAがテトラヒドロフラン環等の場合、不斉炭素が存在し、光学活性異性体、ラセミ体及び任意の割合の混合物として存在しうる。この種の全ての異性体及び互変異性体、並びにその混合物は本発明の範囲に含まれる。
【0033】
本発明の方法は、従来の加水分解法と較べて次のような利点がある。
1.加水分解による方法では、反応系中に水または酸が存在することにより、晶析や精製が容易でなく、また中和による無機塩類の混入等が認められ、シリカゲル精製等の煩雑な操作が必要であった。本発明の方法によればこれら煩雑な操作が必要無くなる。
2.酸の中和の際、酸性が強いと水層へのニトログアニジン類の溶解度が上がるため、抽出率や晶析収率の低下をもたらす。また中和によりアルカリ性または中性に近くなると原料であるトリアジン類が再生するため、収率や純度の低下をもたらす。したがって中和の際のpH管理は厳密に行う必要があり、工業的には非常に煩雑であった。本発明の方法によりpH管理の必要は無くなる。
【0034】
上記1については以下に示す実施例中の(比較例1/実施例1)及び(比較例2/実施例3)により、2については(比較例3/実施例10)により確認できる。
【0035】
【実施例】
以下に実施例及び比較例を挙げて、本発明の内容を具体的に説明する。
実施例11から15中の前処理とは市販の剤をメタノールで洗浄した後、反応溶媒で洗浄することを言う。
【0036】
なお、高速液体クロマトグラフィー(以下HPLCと略す)による分析条件は以下の通りである。
【0037】
カラム:L−カラム(化学品検査協会)
溶離液:メタノール/水またはアセトニトリル/水
温度:40℃
流速:1ml/分
検出器:UV 210または254または278nm
実施例1
1−(2−クロロ−5−ピリジル)メチル−3,5−ジメチル−2−ニトロイミノヘキサヒドロトリアジン5gにメタノール20g及びn−ブチルアミン4.90gを加えて6時間還流した。反応液をHPLCで分析したところ1−(2−クロロ−5−ピリジル)メチル−3−メチル−2−ニトログアニジン3.96gを含んでいた。収率97.1%。反応液を半量に濃縮し、冷却すると結晶を生じた。この結晶を濾取して単離し、目的の構造であることを確認した。物性値を表1に示す。
【0038】
実施例2
1−(2−クロロ−5−チアゾリル)メチル−3−メチル−5−ベンジル−2−ニトロイミノヘキサヒドロトリアジン5gにエタノール25g及びピロリジン3.73gを加えて60℃で8時間攪拌した。反応液をHPLCで分析したところ、1−(2−クロロ−5−チアゾリル)メチル−3−メチル−2−ニトログアニジン3.21gを含んでいた。収率97.9%。反応液を濃縮し、水と酢酸エチルを加えて分液し、有機層を減圧乾固して単離し、目的の構造であることを確認した。物性値を表1に示す。
【0039】
実施例3
1−(3−テトラヒドロフリル)メチル−3−メチル−5−イソプロピル−2−ニトロイミノヘキサヒドロトリアジン5gにイソブタノール25g及びモルホリン4.58gを加えて100℃で4時間攪拌した。反応液をHPLCで分析したところ、1−(3−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン3.33gを含んでいた。収率94.0%。反応液を冷却し、生じた結晶を濾取して構造を確認した。物性値を表1に示す。
【0040】
実施例4
1−(2−メチル−4−テトラヒドロフリル)メチル−3−メチル−5−エチル−2−ニトロイミノヘキサヒドロトリアジン5gにイソプロパノール30g及びエチレンジアミン1.58gを加えて70℃で攪拌した。反応液をHPLCで分析したところ、1−(2−メチル−4−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン3.76gを含んでいた。収率93.2%。反応液を濃縮し、シリカゲルカラム(酢酸エチル/アセトン)で精製し、構造を確認した。物性値を表1に示す。
【0041】
実施例5
1−(2−テトラヒドロフリル)メチル−3−アリル−5−t−ブチル−2−ニトロイミノヘキサヒドロトリアジン5gにエチレングリコール20g及びヒドラジン一水和物1.54gを加え、50℃で12時間攪拌した。反応液をHPLCで分析したところ、1−(2−テトラヒドロフリル)メチル−3−アリル−2−ニトログアニジン3.33gを含んでいた。収率94.9%。物性値を表1に示す。
【0042】
実施例6
オートクレーブに1−(3−テトラヒドロフリル)メチル−3−メチル−5−シクロヘキシル−2−ニトロイミノヘキサヒドロトリアジン5g、メタノール25g及び40%メチルアミン/メタノール溶液4.77gを仕込み、60℃で6時間反応させた。反応液をHPLCで分析したところ1−(3−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン2.98gを含んでいた。収率95.9%。物性値を表1に示す。
【0043】
実施例7
1−(3−テトラヒドロフリル)メチル−3−メチル−5−エチル−2−ニトロイミノヘキサヒドロトリアジン5gにメタノール15g及び水5g及びピペラジン2.06gを加え、60℃で5時間攪拌した。反応液をHPLCで分析したところ、1−(2−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン3.44gを含んでいた。収率92.3%。物性値を表1に示す。
【0044】
実施例8
1−(2−クロロ−5−ピリジル)メチル−3,5−ジメチル−2−ニトロイミノヘキサヒドロトリアジン15gにジクロロメタン150g及びモルホリン13.1gを加え、オートクレーブ中で窒素で1MPaに加圧した。90℃で4時間反応させたところ、反応圧は約1.4MPaであった。反応液をHPLCで分析したところ1−(2−クロロ−5−ピリジル)メチル−3−メチル−2−ニトログアニジン12.05gを含んでいた。収率98.5%。反応液を半量に濃縮し、冷却すると結晶を生じた。この結晶を濾取して単離し、目的の構造であることを確認した。物性値を表1に示す。
【0045】
実施例9
1−(2−クロロ−5−チアゾリル)メチル−3−メチル−5−ベンジル−2−ニトロイミノヘキサヒドロトリアジン15gにジクロロメタン150g及びエタノールアミン6.01gを加え、オートクレーブ中で窒素で1.0MPaに加圧した。80℃で8時間反応させたところ、反応圧は約1.2MPaであった。反応液をHPLCで分析したところ、1−(2−クロロ−5−チアゾリル)メチル−3−メチル−2−ニトログアニジン11.31gを含んでいた。収率92.0%。反応液に飽和食塩水約50gを加えて分液し、有機層に減圧乾固して単離し、目的の構造であることを確認した。物性値を表1に示す。
【0046】
実施例10
1−(3−テトラヒドロフリル)メチル−3−メチル−5−イソプロピル−2−ニトロイミノヘキサヒドロトリアジン15gにジクロロメタン150gを装入し、オートクレーブ中でアンモニアガスを約1g吸収させた。窒素で1.0MPaに加圧し、90℃で4時間反応させたところ、反応圧は約1.3MPaであった。反応液をHPLCで分析したところ、1−(3−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン10.00gを含んでいた。収率94.1%。反応液に硫酸酸性にした芒硝水約30gを加えて分解し、水層から再度ジクロロメタンで抽出した。有機層を減圧濃縮し、酢酸エチルを加えて晶析させ、濾取して構造を確認した。単離収率83%。物性値を表1に示す。
【0047】
実施例11
1−(2−クロロ−5−ピリジル)メチル−3,5−ジメチル−2−ニトロイミノヘキサヒドロトリアジン5gにメタノール20g及び前処理を施したバイエル社製レバチットOC1059 12gを加えて6時間還流した。反応剤を濾過し、メタノールで洗浄した。濾洗液をHPLCで分析したところ1−(2−クロロ−5−ピリジル)メチル−3−メチル−2−ニトログアニジン3.79gを含んでいた。収率92.9%。反応液を半量に濃縮し、冷却すると結晶を生じた。この結晶を濾取して単離し、構造を確認した。物性値を表1に示す。
【0048】
実施例12
1−(2−クロロ−5−チアゾリル)メチル−3−メチル−5−ベンジル−2−ニトロイミノヘキサヒドロトリアジン5gにエタノール25g及び前処理を施した三菱化学社製ダイヤイオンWA20 11gを加えて60℃で8時間攪拌した。反応剤を濾過し、エタノールで洗浄した。濾洗液をHPLCで分析したところ、1−(2−クロロ−5−チアゾリル)メチル−3−メチル−2−ニトログアニジン2.95gを含んでいた。収率90.0%。反応液を濃縮し、水と酢酸エチルを加えて分液し、有機層を減圧乾固して単離し、構造を確認した。物性値を表1に示す。
【0049】
実施例13
1−(3−テトラヒドロフリル)メチル−3−メチル−5−イソプロピル−2−ニトロイミノヘキサヒドロトリアジン5gにイソブタノール25g及び前処理を施したバイエル社製レバチットOC1065 15gを加えて70℃で4時間攪拌した。反応剤を濾過し、イソブタノールで洗浄した。濾洗液をHPLCで分析したところ、1−(3−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン3.37gを含んでいた。収率95.1%。反応液を冷却し、生じた結晶を濾取して構造を確認した。物性値を表1に示す。
【0050】
実施例14
1−(2−メチル−4−テトラヒドロフリル)メチル−3−メチル−5−エチル−2−ニトロイミノヘキサヒドロトリアジン5gをイソプロパノール30gに加熱溶解し、前処理を施した三菱化学社製ダイヤイオンWA21 20gを充填したカラムに70℃で通液した。反応液とカラムの洗浄液を合わせてHPLCで分析したところ、1−(2−メチル−4−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン3.72gを含んでいた。収率92.2%。反応液を濃縮し、シリカゲルカラム(酢酸エチル/アセトン)で精製し、構造を確認した。物性値を表1に示す。
【0051】
実施例15
1−(2−テトラヒドロフリル)メチル−3−アリル−5−t−ブチル−2−ニトロイミノヘキサヒドロトリアジン5gにエチレングリコール20gの溶液を前処理を施した三菱化学社製セパビーズFP−BA13 40gを充填した試験管に装入し、50℃で12時間振とうした。反応剤を濾過し、メタノールで洗浄した。濾洗液をHPLCで分析したところ、1−(2−テトラヒドロフリル)メチル−3−アリル−2−ニトログアニジン3.09gを含んでいた。収率88.1%。物性値を表1に示す。
【0052】
実施例16
1−(3−テトラヒドロフリル)メチル−3−メチル−5−シクロヘキシル−2−ニトロイミノヘキサヒドロトリアジン5gにメタノール25g及び市販形態のままのバイエル社製レバチットR258−K 14gを加えて60℃で5時間反応させた。反応剤を濾過し、メタノールで洗浄した。濾洗液をHPLCで分析したところ1−(3−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン2.84gを含んでいた。収率91.4%。物性値を表1に示す。
【0053】
実施例17
1−(3−テトラヒドロフリル)メチル−3−メチル−5−エチル−2−ニトロイミノヘキサヒドロトリアジン5gにメタノール25g及び市販形態のままのCPG社製アミノプロピル−CPG 14gを加えて80℃で4時間反応させた。反応剤を濾過し、メタノールで洗浄した。濾洗液をHPLCで分析したところ1−(3−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン3.50gを含んでいた。収率93.9%。物性値を表1に示す。
【0054】
実施例18
1−(2−クロロ−5−ピリジル)メチル−3,5−ジメチル−2−ニトロイミノヘキサヒドロトリアジン5gにイソブタノール20g及び硫酸アンモニウム2.21gを加えて100℃で4時間攪拌した。反応液を濾過し、濾液をHPLCで分析したところ1−(2−クロロ−5−ピリジル)メチル−3−メチル−2−ニトログアニジン3.90gを含んでいた。収率95.6%。反応液を半量に濃縮し、冷却すると結晶を生じた。この結晶を濾取して単離し、目的の構造であることを確認した。物性値を表1に示す。
【0055】
実施例19
1−(2−クロロ−5−チアゾリル)メチル−3−メチル−5−ベンジル−2−ニトロイミノヘキサヒドロトリアジン5gにエタノール25g及び酢酸アンモニウム1.52gを加えて4時間還流した。反応液をHPLCで分析したところ、1−(2−クロロ−5−チアゾリル)メチル−3−メチル−2−ニトログアニジン3.97gを含んでいた。収率96.9%。反応液を濃縮し、水と酢酸エチルを加えて分液し、有機層を減圧乾固して単離し、目的の構造であることを確認した。物性値を表1に示す。
【0056】
実施例20
1−(3−テトラヒドロフリル)メチル−3−メチル−5−イソプロピル−2−ニトロイミノヘキサヒドロトリアジン5gにメタノール25g及び塩化アンモニウム0.94gを加えて4時間還流した。反応液を濾過し、濾液をHPLCで分析したところ、1−(3−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン3.47gを含んでいた。収率97.9%。反応液を冷却し、生じた結晶を濾取して構造を確認した。物性値を表1に示す。
【0057】
実施例21
1−(2−メチル−4−テトラヒドロフリル)メチル−3−メチル−5−エチル−2−ニトロイミノヘキサヒドロトリアジン5gにn−ブタノール30g及び硫酸アンモニウム2.32gを加えて110℃で5時間攪拌した。反応液をHPLCで分析したところ、1−(2−メチル−4−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン3.69gを含んでいた。収率97.4%。反応液を濃縮し、シリカゲルカラム(酢酸エチル/アセトン)で精製し、構造を確認した。物性値を表1に示す。
【0058】
実施例22
1−(2−テトラヒドロフリル)メチル−3−アリル−5−t−ブチル−2−ニトロイミノヘキサヒドロトリアジン5gにエタノール20g及び燐酸アンモニウム2.14gを加え、5時間還流した。反応液をHPLCで分析したところ、1−(2−テトラヒドロフリル)メチル−3−アリル−2−ニトログアニジン3.30gを含んでいた。収率95.9%。物性値を表1に示す。
【0059】
実施例23
オートクレーブに1−(3−テトラヒドロフリル)メチル−3−メチル−5−シクロヘキシル−2−ニトロイミノヘキサヒドロトリアジン5g、メタノール25g及び炭酸アンモニウム1.48gを仕込み、100℃で10時間反応させた。反応圧は0.2MPaであった。反応液をHPLCで分析したところ1−(3−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン2.99gを含んでいた。収率96.2%。物性値を表1に示す。
【0060】
実施例24
1−(3−テトラヒドロフリル)メチル−3−メチル−5−エチル−2−ニトロイミノヘキサヒドロトリアジン5gにメタノール20g、燐酸−水素二アンモニウム2.77gを加え、60℃で5時間攪拌した。反応液をHPLCで分析したところ、1−(2−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン3.53gを含んでいた。収率94.7%。物性値を表1に示す。
【0061】
実施例25
1−(2−クロロ−5−ピリジル)メチル−3,5−ジメチル−2−ニトロイミノヘキサヒドロトリアジン5gにイソブタノール20g及びメチルアミン塩酸塩2.26gを加えて100℃で4時間攪拌した。不溶物を濾別し、濾洗液をHPLCで分析したところ1−(2−クロロ−5−ピリジル)メチル−3−メチル−2−ニトログアニジン3.81gを含んでいた。収率93.4%。濾洗液を半量に濃縮し、冷却すると結晶を生じた。この結晶を濾取して単離し、構造を確認した。物性値を表1に示す。
【0062】
実施例26
1−(2−クロロ−5−チアゾリル)メチル−3−メチル−5−ベンジル−2−ニトロイミノヘキサヒドロトリアジン5gにn−ブタノール25g及びモルホリン硫酸塩2.23gを加えて4時間還流した。不溶物を濾別し、濾洗液をHPLCで分析したところ1−(2−クロロ−5−チアゾリル)メチル−3−メチル−2−ニトログアニジン3.73gを含んでいた。収率91.1%。濾洗液を濃縮し、水と酢酸エチルを加えて分液し、有機層を減圧乾固して単離し、構造を確認した。物性値を表1に示す。
【0063】
実施例27
1−(3−テトラヒドロフリル)メチル−3−メチル−5−イソプロピル−2−ニトロイミノヘキサヒドロトリアジン5gにイソブタノール25g及びメチルアミン硫酸塩1.40gを加えて4時間還流した。不溶物を濾別し、濾洗液をHPLCで分析したところ1−(3−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン3.33gを含んでいた。収率94.0%。濾洗液を冷却し、生じた結晶を濾取して構造を確認した。物性値を表1に示す。
【0064】
実施例28
1−(2−メチル−4−テトラヒドロフリル)メチル−3−メチル−5−エチル−2−ニトロイミノヘキサヒドロトリアジン5gにn−ブタノール30g及びピロリジン塩酸塩4.98gを加えて110℃で5時間攪拌した。不溶物を濾別し、濾洗液をHPLCで分析したところ、1−(2−メチル−4−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン3.47gを含んでいた。収率91.6%。濾洗液を濃縮し、シリカゲルカラム(酢酸エチル/アセトン)で精製し、構造を確認した。物性値を表1に示す。
【0065】
比較例1
1−(2−クロロ−5−ピリジル)メチル−3,5−ジメチル−2−ニトロイミノヘキサヒドロトリアジン8.5gにエタノール90ml及び6M塩酸5.5mlを加えて30分加熱還流した。塩酸により液が酸性化するため反応液を冷却しても結晶を生じなかった。
【0066】
比較例2
1−(3−テトラヒドロフリル)メチル−3,5−ジメチル−2−ニトロイミノヘキサヒドロトリアジン18gにジクロロメタン340gを加え、7%塩酸155gを加えて4時間加熱還流させた。冷却して食塩33gを加えて分液し、水層をジクロロメタン50gで4回抽出した。抽出率は83%であった。有機層を合わせて減圧濃縮し、酢酸エチルを加えて晶析して1−(3−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン9.24gを得た。単離収率66.4%。
【0067】
比較例3
1−(3−テトラヒドロフリル)メチル−3−メチル−5−イソプロピル−2−ニトロイミノヘキサヒドロトリアジン20gにジクロロメタン140gを加え、13%硫酸106gを加えて8時間加熱還流させた。反応収率は98%であった。冷却して45%水酸化ナトリウム液でpH6.5に調整した。調整後1−(3−テトラヒドロフリル)メチル−3−メチル−5−イソプロピル−2−ニトロイミノヘキサヒドロトリアジンが9%増加した。分液し、水層をジクロロメタン140gで再抽出した。有機層を合わせて減圧濃縮し、酢酸エチルを加えて晶析して1−(3−テトラヒドロフリル)メチル−3−メチル−2−ニトログアニジン10.3gを得た。単離収率73%。
【0068】
【表1】
【0069】
【表2】
【0070】
【発明の効果】
以上のように本発明の方法によれば、農薬(特に殺虫剤)またはその中間体として有用な置換ニトログアニジン類を加水分解によらず実施することが可能であり、酸や水に由来する煩雑な操作を必要とせず、簡単な方法で高収率で目的物が得られ、製造法として特に優れている。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a novel process for producing nitroguanidines.
The method of the present invention is very useful in the production of compounds used as agricultural chemicals (especially insecticides) or intermediates thereof.
[0002]
[Prior art]
It is well known that certain nitroguanidines are useful as agricultural chemicals (especially insecticides) or intermediates thereof (JP-A-2-288860, JP-A-3-109374, JP-A-3-157308). No., JP-A-7-179448, etc.).
[0003]
The following are known as methods for producing disubstituted nitroguanidines.
[0004]
(1) A method of hydrolyzing 1,3,5-trisubstituted 2-nitroiminohexahydro-1,3,5-triazines in the presence of acids (Japanese Patent Laid-Open Nos. 3-291267 and No. 4-330049).
[0005]
[Chemical 3]
(2) A method via a certain kind of isothiourea (JP-A-5-9173).
[0006]
[Formula 4]
(3) A method via a certain dithiocarbamic acid derivative (JP-A-4-120054, JP-A-4-74158).
[0007]
[Chemical formula 5]
(4) A method via 1,2-disubstituted-3-nitroisothioureas (Japanese Patent Laid-Open No. 2-88860).
[0008]
[Chemical 6]
(5) A method of directly alkylating monosubstituted nitroguanidine (Japanese Patent Application No. 8-158146).
[0009]
[Chemical 7]
[0010]
[Problems to be solved by the invention]
As described above, only method (1) is known as a method for producing disubstituted nitroguanidine using 1,3,5-trisubstituted-2-nitroiminohexahydrotriazine as a raw material. (1) is a hydrolysis reaction with acids.
[0011]
On the other hand, it is well known that nitroguanidine derivatives have high water solubility. In general, the water solubility of nitroguanidines tends to be higher under acidic conditions than under neutral conditions. Therefore, when water or acid is present in the reaction system, the crystallization yield and the extraction rate are lowered during the isolation operation, and the operation tends to be complicated.
[0012]
If neutralization is performed to suppress this, the triazines are regenerated by a reverse reaction, which further complicates the operation.
[0013]
An object of the present invention is to provide a simple production method which can replace the above-mentioned hydrolysis method.
[0014]
[Means for Solving the Problems]
As a result of intensive studies to achieve the above object, the present inventors found that acid hydrolysis is a mechanism in the process of searching for a method other than hydrolysis of 1,3,5-trisubstituted-2-nitroiminohexahydrotriazine. However, the present inventors have found a method of reacting with ammonia, primary or secondary amines or salts thereof, which is different and does not require an acid and does not require water, thereby completing the present invention.
[0015]
That is, the present invention provides the formula (1)
[0016]
[Chemical 8]
(In the formula, A is an aromatic or non-aromatic hydrocarbon ring which may be substituted, an aromatic or non-aromatic heterocyclic ring which may be substituted, a hydrogen atom, or an alkyl group which may be substituted. Represents an alkenyl group or an alkynyl group, R1 Represents an optionally substituted chain or cyclic alkyl group having 1 to 10 carbon atoms, and R2 Represents a hydrogen atom, an optionally substituted alkyl group having 1 to 6 carbon atoms, an alkenyl group or an alkynyl group. ) Ammonia, primary or secondary amine or a salt thereof(However, urea is excluded.)WhenNon-aqueousFormula (2) characterized by reacting
[0017]
[Chemical 9]
(Where A, R2 Indicates the above meaning. It is a manufacturing method of nitroguanidine represented by this.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Typical examples of the substituent A of the compound of the formula (1) used in the present invention include a hydrogen atom, a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a t-butyl group, a pentyl group, and a hexyl group. , Vinyl group, allyl group, propargyl group, benzyl group, methoxymethyl group, methylthiomethyl group, trifluoromethyl group, phenyl group, 3-nitrophenyl group, 3-cyanophenyl group, 3-chlorophenyl group, 3-trifluoro Methylphenyl group, cyclopentyl group, cyclohexyl group, 2-pyridyl group, 3-pyridyl group, 2-chloro-5-pyridyl group, 2-methyl-5-pyridyl group, 2-methoxy-5-pyridyl group, 5-thiazolyl Group, 2-chloro-5-thiazolyl group, 2-methyl-5-thiazolyl group, 2-chloro-5-pyrimidyl group, 2-chloro-5 Oxazolyl group, 2-methyl-5-oxazolyl group, 2-furyl group, 3-furyl group, 2-tetrahydrofuryl group, 3-tetrahydrofuryl group, 2-methyl-4-tetrahydrofuryl group, 2-ethyl-4- A tetrahydrofuryl group, 2-isopropyltetrahydrofuryl group, 2-t-butyl-4-tetrahydrofuryl group, 2,2-dimethyl-4-tetrahydrofuryl group and the like can be mentioned.
[0019]
R1 Typical examples of methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, isobutyl group, t-butyl group, pentyl group, hexyl group, heptyl group, octyl group , Nonyl group, decyl group, cyclopentyl group, cyclohexyl group, benzyl group and the like.
[0020]
R2 Typical examples of hydrogen atom, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, isobutyl group, t-butyl group, pentyl group, hexyl group, cyclopentyl group Cyclohexyl group, allyl group, propargyl group, methoxymethyl group, methylthiomethyl group and the like.
[0021]
Typical examples of primary or secondary amines used in the present invention include methylamine, ethylamine, n-propylamine, isopropylamine, n-butylamine, isobutylamine, sec-butylamine, t-butylamine, pentylamine, hexyl. Amine, heptylamine, octylamine, cyclohexylamine, benzylamine, allylamine, propargylamine, aniline, phenylenediamine, toluidine, xylidine, ethylenediamine, trimethylenediamine, dimethylamine, diethylamine, benzylmethylamine, N-methylethylenediamine, N, N′-dimethylethylenediamine, N-methylaniline, pyrrolidine, piperidine, piperazine, N-methylpiperazine, morpholine, thiomorpholine, eta Amino acid esters such as uramine, diethanolamine, methoxyethylamine, methyl aminoacetate, hydrazine, N-methylhydrazine, N, N-dimethylhydrazine, N, N′-dimethylhydrazine, hydroxylamine, methoxyamine, benzyloxyamine and the like. . The compound to be reacted with the compound represented by the formula (1) is preferably ammonia or an aliphatic amine, and particularly preferably an aliphatic cyclic amine.
[0022]
The primary or secondary amine may be a reagent in which a primary or secondary amino group is modified on a carrier insoluble in a solvent. A typical example is given below.
[0023]
Examples of the carrier include polymer compounds and glass beads. Specific examples of monomers that form the polymer compound carrier include aromatic vinyl compounds such as styrene, divinylbenzene, and vinylpyridine, acrylates, methacrylates, acrylates such as acrylonitrile, acrylamide, Examples thereof include phenols such as phenol, cyclic compounds such as ethylene oxide and ethyleneimine, and vinyl alcohol. As the polymer compound carrier, those obtained by polymerizing these alone or in combination can be used. Specific examples include polystyrene resin, acrylic ester resin, methacrylic ester resin, phenol resin, divinylbenzene resin, divinylbenzene-styrene copolymer resin, and the like.
[0024]
Specific examples of the primary or secondary amino group modified to these polymer compound carriers or glass beads include amino group, methylamino group, ethylamino group, propylamino group, benzylamino group, 2-aminoethyl group. An amino group, 3-aminopropylamino group, piperidino group, hydrazino group, etc. are mentioned. An appropriate spacer may be introduced between these functional groups and the carrier.
[0025]
Specific examples of the reaction agent in which a primary or secondary amino group is modified on a carrier insoluble in these solvents include an anion exchange resin having an amino group. For example, Levacit OC1059, Levacit OC1065, Levatit R258-K, Levacit E82 / 81, Diaion WA20, Diaion WA21, Diaion CR20, Sepa beads FP-HA13, Sepa beads FP-BA13, Sepa beads FP-ZA13, manufactured by Mitsubishi Chemical Corporation Amberlite IRA6E manufactured by Rohm & Haas, Aminopropyl-CPG manufactured by CPG, Amino Cellulofine manufactured by Chisso, and the like.
[0026]
Ammonia or amine can also be used as a salt. Specific examples of acids that form salts with these amines include mineral acids such as hydrochloric acid, sulfuric acid, phosphoric acid, and carbonic acid, organic carboxylic acids such as formic acid and acetic acid, and organic sulfonic acids such as methanesulfonic acid and toluenesulfonic acid. Can be mentioned. These salts can be used either anhydrous or hydrated.
[0027]
The amount of ammonia or amine used is preferably 1 equivalent or more, particularly preferably 2 equivalents or more, relative to the compound represented by the formula (1). In the case of salts, the amount is preferably 0.01 equivalents or more, particularly preferably 0.1 equivalents or more, relative to the compound represented by the formula (1).
[0028]
The reaction can be carried out without a solvent, but is usually diluted with a solvent. Solvents include ethers such as tetrahydrofuran and dioxane, halogenated hydrocarbons such as dichloromethane and dichloroethane, ketones such as acetone and methyl ethyl ketone, nitriles such as acetonitrile, N, N-dimethylformamide, 1,3-dimethyl-2 -Aprotic polar solvents such as imidazolidinone, dimethyl sulfoxide, N-methylpyrrolidone, and alcohols such as methanol, ethanol, propanol, isopropanol, butanol, isobutanol, and ethylene glycol. Preferred are halogenated hydrocarbons such as dichloromethane or alcohols, and particularly preferred are alcohols. These solvents can be used as a mixture in any proportion.it can.
[0029]
The reaction temperature is preferably 10 ° C or higher, particularly preferably 30 to 120 ° C. The reaction time is generally 0.1 hour to 7 days, preferably 1 to 24 hours.
[0030]
The reaction can be carried out at normal pressure or under pressure.
[0031]
It is possible to carry out the treatment after the reaction according to a conventional method. For example, the salt can be removed by filtration or the like, if necessary, and then cooled or added with a poor solvent and crystallized. Moreover, after removing salts by filtration etc. as needed, it can take out by concentrating a reaction liquid. If necessary, purification with water washing, activated carbon treatment, recrystallization and the like can be performed to obtain a high purity product.
[0032]
Compounds having the nitroimino group of formulas (1) and (2) may exist as isomers (syn- and anti-isomers) or tautomers. In the formulas (1) and (2), when A is a tetrahydrofuran ring or the like, an asymmetric carbon is present and may exist as an optically active isomer, a racemate, and a mixture in an arbitrary ratio. All isomers and tautomers of this type, and mixtures thereof are included within the scope of the present invention.
[0033]
The method of the present invention has the following advantages over the conventional hydrolysis method.
1. In the method using hydrolysis, crystallization and purification are not easy due to the presence of water or acid in the reaction system, and contamination with inorganic salts due to neutralization is recognized, and complicated operations such as silica gel purification are necessary. Met. According to the method of the present invention, these complicated operations are not necessary.
2. When the acid is neutralized, if the acidity is strong, the solubility of nitroguanidines in the aqueous layer increases, leading to a decrease in extraction rate and crystallization yield. Further, when it becomes alkaline or neutral due to neutralization, triazines as raw materials are regenerated, resulting in a decrease in yield and purity. Therefore, the pH control at the time of neutralization needs to be strictly performed, which is very complicated industrially. The method of the present invention eliminates the need for pH control.
[0034]
The above 1 can be confirmed by (Comparative Example 1 / Example 1) and (Comparative Example 2 / Example 3) in the following examples, and 2 can be confirmed by (Comparative Example 3 / Example 10).
[0035]
【Example】
The contents of the present invention will be specifically described below with reference to examples and comparative examples.
The pretreatment in Examples 11 to 15 refers to washing a commercially available agent with methanol and then washing with a reaction solvent.
[0036]
Analysis conditions by high performance liquid chromatography (hereinafter abbreviated as HPLC) are as follows.
[0037]
Column: L-column (Chemicals Inspection Association)
Eluent: methanol / water or acetonitrile / water
Temperature: 40 ° C
Flow rate: 1 ml / min
Detector: UV 210 or 254 or 278 nm
Example 1
To 5 g of 1- (2-chloro-5-pyridyl) methyl-3,5-dimethyl-2-nitroiminohexahydrotriazine, 20 g of methanol and 4.90 g of n-butylamine were added and refluxed for 6 hours. The reaction solution was analyzed by HPLC and found to contain 3.96 g of 1- (2-chloro-5-pyridyl) methyl-3-methyl-2-nitroguanidine. Yield 97.1%. The reaction solution was concentrated to half and cooled to produce crystals. The crystals were collected by filtration and confirmed to have the desired structure. The physical property values are shown in Table 1.
[0038]
Example 2
25 g of ethanol and 3.73 g of pyrrolidine were added to 5 g of 1- (2-chloro-5-thiazolyl) methyl-3-methyl-5-benzyl-2-nitroiminohexahydrotriazine and stirred at 60 ° C. for 8 hours. When the reaction solution was analyzed by HPLC, it contained 3.21 g of 1- (2-chloro-5-thiazolyl) methyl-3-methyl-2-nitroguanidine. Yield 97.9%. The reaction solution was concentrated, water and ethyl acetate were added and the layers were separated, and the organic layer was isolated by drying under reduced pressure to confirm that it had the desired structure. The physical property values are shown in Table 1.
[0039]
Example 3
25 g of isobutanol and 4.58 g of morpholine were added to 5 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-isopropyl-2-nitroiminohexahydrotriazine and stirred at 100 ° C. for 4 hours. When the reaction solution was analyzed by HPLC, it contained 3.33 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 94.0%. The reaction solution was cooled, and the resulting crystals were collected by filtration to confirm the structure. The physical property values are shown in Table 1.
[0040]
Example 4
30 g of isopropanol and 1.58 g of ethylenediamine were added to 5 g of 1- (2-methyl-4-tetrahydrofuryl) methyl-3-methyl-5-ethyl-2-nitroiminohexahydrotriazine and stirred at 70 ° C. When the reaction solution was analyzed by HPLC, it contained 3.76 g of 1- (2-methyl-4-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 93.2%. The reaction solution was concentrated and purified with a silica gel column (ethyl acetate / acetone) to confirm the structure. The physical property values are shown in Table 1.
[0041]
Example 5
20 g of ethylene glycol and 1.54 g of hydrazine monohydrate are added to 5 g of 1- (2-tetrahydrofuryl) methyl-3-allyl-5-t-butyl-2-nitroiminohexahydrotriazine and stirred at 50 ° C. for 12 hours. did. When the reaction solution was analyzed by HPLC, it contained 3.33 g of 1- (2-tetrahydrofuryl) methyl-3-allyl-2-nitroguanidine. Yield 94.9%. The physical property values are shown in Table 1.
[0042]
Example 6
An autoclave is charged with 5 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-cyclohexyl-2-nitroiminohexahydrotriazine, 25 g of methanol, and 4.77 g of a 40% methylamine / methanol solution, and at 60 ° C. for 6 hours. Reacted. When the reaction solution was analyzed by HPLC, it contained 2.98 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 95.9%. The physical property values are shown in Table 1.
[0043]
Example 7
15 g of methanol, 5 g of water and 2.06 g of piperazine were added to 5 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-ethyl-2-nitroiminohexahydrotriazine, and the mixture was stirred at 60 ° C. for 5 hours. When the reaction solution was analyzed by HPLC, it contained 3.44 g of 1- (2-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 92.3%. The physical property values are shown in Table 1.
[0044]
Example 8
150 g of dichloromethane and 13.1 g of morpholine were added to 15 g of 1- (2-chloro-5-pyridyl) methyl-3,5-dimethyl-2-nitroiminohexahydrotriazine, and pressurized to 1 MPa with nitrogen in an autoclave. When reacted at 90 ° C. for 4 hours, the reaction pressure was about 1.4 MPa. The reaction solution was analyzed by HPLC and contained 12.05 g of 1- (2-chloro-5-pyridyl) methyl-3-methyl-2-nitroguanidine. Yield 98.5%. The reaction solution was concentrated to half and cooled to produce crystals. The crystals were collected by filtration and confirmed to have the desired structure. The physical property values are shown in Table 1.
[0045]
Example 9
150 g of dichloromethane and 6.01 g of ethanolamine are added to 15 g of 1- (2-chloro-5-thiazolyl) methyl-3-methyl-5-benzyl-2-nitroiminohexahydrotriazine, and the pressure is increased to 1.0 MPa with nitrogen in an autoclave. Pressurized. When reacted at 80 ° C. for 8 hours, the reaction pressure was about 1.2 MPa. When the reaction solution was analyzed by HPLC, it contained 11.31 g of 1- (2-chloro-5-thiazolyl) methyl-3-methyl-2-nitroguanidine. Yield 92.0%. About 50 g of saturated brine was added to the reaction solution for liquid separation, and the organic layer was isolated by drying under reduced pressure to confirm that it had the desired structure. The physical property values are shown in Table 1.
[0046]
Example 10
150 g of dichloromethane was charged into 15 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-isopropyl-2-nitroiminohexahydrotriazine, and about 1 g of ammonia gas was absorbed in the autoclave. When pressurized to 1.0 MPa with nitrogen and reacted at 90 ° C. for 4 hours, the reaction pressure was about 1.3 MPa. When the reaction solution was analyzed by HPLC, it contained 10.00 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 94.1%. The reaction solution was decomposed by adding about 30 g of sulfuric acid acidified with sulfuric acid, and extracted from the aqueous layer with dichloromethane again. The organic layer was concentrated under reduced pressure, crystallized by adding ethyl acetate, and collected by filtration to confirm the structure. Isolated yield 83%. The physical property values are shown in Table 1.
[0047]
Example 11
To 5 g of 1- (2-chloro-5-pyridyl) methyl-3,5-dimethyl-2-nitroiminohexahydrotriazine was added 20 g of methanol and 12 g of Bayer Levacit OC1059 pretreated, and the mixture was refluxed for 6 hours. The reactants were filtered and washed with methanol. The filtrate was analyzed by HPLC and found to contain 3.79 g of 1- (2-chloro-5-pyridyl) methyl-3-methyl-2-nitroguanidine. Yield 92.9%. The reaction solution was concentrated to half and cooled to produce crystals. The crystals were collected by filtration and confirmed the structure. The physical property values are shown in Table 1.
[0048]
Example 12
To 5 g of 1- (2-chloro-5-thiazolyl) methyl-3-methyl-5-benzyl-2-nitroiminohexahydrotriazine, 25 g of ethanol and 11 g of Diaion WA20 manufactured by Mitsubishi Chemical Co., Ltd., which had been pretreated, were added to give 60 Stir at 8 ° C. for 8 hours. The reactants were filtered and washed with ethanol. When the filtrate was analyzed by HPLC, it contained 2.95 g of 1- (2-chloro-5-thiazolyl) methyl-3-methyl-2-nitroguanidine. Yield 90.0%. The reaction solution was concentrated, water and ethyl acetate were added and the layers were separated, and the organic layer was isolated by drying under reduced pressure to confirm the structure. The physical property values are shown in Table 1.
[0049]
Example 13
To 5 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-isopropyl-2-nitroiminohexahydrotriazine was added 25 g of isobutanol and 15 g of Bayer Lebatit OC1065, which had been pretreated, and added at 70 ° C. for 4 hours. Stir. The reactants were filtered and washed with isobutanol. When the filtrate was analyzed by HPLC, it contained 3.37 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 95.1%. The reaction solution was cooled, and the resulting crystals were collected by filtration to confirm the structure. The physical property values are shown in Table 1.
[0050]
Example 14
Diaion WA21 manufactured by Mitsubishi Chemical Corporation, which was pre-treated by dissolving 5 g of 1- (2-methyl-4-tetrahydrofuryl) methyl-3-methyl-5-ethyl-2-nitroiminohexahydrotriazine in 30 g of isopropanol. The solution was passed through a column packed with 20 g at 70 ° C. When the reaction solution and the column wash were combined and analyzed by HPLC, it contained 3.72 g of 1- (2-methyl-4-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 92.2%. The reaction solution was concentrated and purified with a silica gel column (ethyl acetate / acetone) to confirm the structure. The physical property values are shown in Table 1.
[0051]
Example 15
1- (2-tetrahydrofuryl) methyl-3-allyl-5-t-butyl-2-nitroiminohexahydrotriazine 40 g of Sepabeads FP-BA13 manufactured by Mitsubishi Chemical Corporation, which had been pretreated with a solution of 20 g of ethylene glycol in 5 g The test tube was charged and shaken at 50 ° C. for 12 hours. The reactants were filtered and washed with methanol. When the filtrate was analyzed by HPLC, it contained 3.09 g of 1- (2-tetrahydrofuryl) methyl-3-allyl-2-nitroguanidine. Yield 88.1%. The physical property values are shown in Table 1.
[0052]
Example 16
To 5 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-cyclohexyl-2-nitroiminohexahydrotriazine was added 25 g of methanol and 14 g of Lebatit R258-K manufactured by Bayer as it was in the commercial form, and the mixture was stirred at 60 ° C. Reacted for hours. The reactants were filtered and washed with methanol. The filtrate was analyzed by HPLC and found to contain 2.84 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 91.4%. The physical property values are shown in Table 1.
[0053]
Example 17
To 5 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-ethyl-2-nitroiminohexahydrotriazine was added 25 g of methanol and 14 g of aminopropyl-CPG manufactured by CPG in a commercially available form, and the mixture was heated at 80 ° C. Reacted for hours. The reactants were filtered and washed with methanol. The filtrate was analyzed by HPLC and found to contain 3.50 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 93.9%. The physical property values are shown in Table 1.
[0054]
Example 18
To 5 g of 1- (2-chloro-5-pyridyl) methyl-3,5-dimethyl-2-nitroiminohexahydrotriazine, 20 g of isobutanol and 2.21 g of ammonium sulfate were added and stirred at 100 ° C. for 4 hours. The reaction solution was filtered, and the filtrate was analyzed by HPLC. As a result, it contained 3.90 g of 1- (2-chloro-5-pyridyl) methyl-3-methyl-2-nitroguanidine. Yield 95.6%. The reaction solution was concentrated to half and cooled to produce crystals. The crystals were collected by filtration and confirmed to have the desired structure. The physical property values are shown in Table 1.
[0055]
Example 19
25 g of ethanol and 1.52 g of ammonium acetate were added to 5 g of 1- (2-chloro-5-thiazolyl) methyl-3-methyl-5-benzyl-2-nitroiminohexahydrotriazine, and the mixture was refluxed for 4 hours. When the reaction solution was analyzed by HPLC, it contained 3.97 g of 1- (2-chloro-5-thiazolyl) methyl-3-methyl-2-nitroguanidine. Yield 96.9%. The reaction solution was concentrated, water and ethyl acetate were added and the layers were separated, and the organic layer was isolated by drying under reduced pressure to confirm that it had the desired structure. The physical property values are shown in Table 1.
[0056]
Example 20
25 g of methanol and 0.94 g of ammonium chloride were added to 5 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-isopropyl-2-nitroiminohexahydrotriazine, and the mixture was refluxed for 4 hours. The reaction solution was filtered and the filtrate was analyzed by HPLC. As a result, it contained 3.47 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 97.9%. The reaction solution was cooled, and the resulting crystals were collected by filtration to confirm the structure. The physical property values are shown in Table 1.
[0057]
Example 21
To 5 g of 1- (2-methyl-4-tetrahydrofuryl) methyl-3-methyl-5-ethyl-2-nitroiminohexahydrotriazine, 30 g of n-butanol and 2.32 g of ammonium sulfate were added and stirred at 110 ° C. for 5 hours. . When the reaction solution was analyzed by HPLC, it contained 3.69 g of 1- (2-methyl-4-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 97.4%. The reaction solution was concentrated and purified with a silica gel column (ethyl acetate / acetone) to confirm the structure. The physical property values are shown in Table 1.
[0058]
Example 22
20 g of ethanol and 2.14 g of ammonium phosphate were added to 5 g of 1- (2-tetrahydrofuryl) methyl-3-allyl-5-t-butyl-2-nitroiminohexahydrotriazine, and the mixture was refluxed for 5 hours. When the reaction solution was analyzed by HPLC, it contained 1.30 g of 1- (2-tetrahydrofuryl) methyl-3-allyl-2-nitroguanidine. Yield 95.9%. The physical property values are shown in Table 1.
[0059]
Example 23
An autoclave was charged with 5 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-cyclohexyl-2-nitroiminohexahydrotriazine, 25 g of methanol and 1.48 g of ammonium carbonate, and reacted at 100 ° C. for 10 hours. The reaction pressure was 0.2 MPa. When the reaction solution was analyzed by HPLC, it contained 2.99 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 96.2%. The physical property values are shown in Table 1.
[0060]
Example 24
To 5 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-ethyl-2-nitroiminohexahydrotriazine, 20 g of methanol and 2.77 g of phosphoric acid-diammonium hydrogen were added and stirred at 60 ° C. for 5 hours. When the reaction solution was analyzed by HPLC, it contained 3.53 g of 1- (2-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 94.7%. The physical property values are shown in Table 1.
[0061]
Example 25
20 g of isobutanol and 2.26 g of methylamine hydrochloride were added to 5 g of 1- (2-chloro-5-pyridyl) methyl-3,5-dimethyl-2-nitroiminohexahydrotriazine and stirred at 100 ° C. for 4 hours. Insoluble matter was filtered off, and the filtrate was analyzed by HPLC. As a result, it contained 3.81 g of 1- (2-chloro-5-pyridyl) methyl-3-methyl-2-nitroguanidine. Yield 93.4%. The filtrate was concentrated in half and cooled to produce crystals. The crystals were collected by filtration and confirmed the structure. The physical property values are shown in Table 1.
[0062]
Example 26
25 g of n-butanol and 2.23 g of morpholine sulfate were added to 5 g of 1- (2-chloro-5-thiazolyl) methyl-3-methyl-5-benzyl-2-nitroiminohexahydrotriazine and refluxed for 4 hours. Insoluble matter was filtered off and the filtrate was analyzed by HPLC. As a result, it contained 3.73 g of 1- (2-chloro-5-thiazolyl) methyl-3-methyl-2-nitroguanidine. Yield 91.1%. The filtrate was concentrated, water and ethyl acetate were added for liquid separation, and the organic layer was isolated by drying under reduced pressure to confirm the structure. The physical property values are shown in Table 1.
[0063]
Example 27
25 g of isobutanol and 1.40 g of methylamine sulfate were added to 5 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-isopropyl-2-nitroiminohexahydrotriazine and refluxed for 4 hours. The insoluble material was filtered off and the filtrate was analyzed by HPLC. As a result, it contained 3.33 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 94.0%. The filtrate was cooled and the resulting crystals were collected by filtration to confirm the structure. The physical property values are shown in Table 1.
[0064]
Example 28
30 g of n-butanol and 4.98 g of pyrrolidine hydrochloride were added to 5 g of 1- (2-methyl-4-tetrahydrofuryl) methyl-3-methyl-5-ethyl-2-nitroiminohexahydrotriazine and 110 ° C. for 5 hours. Stir. Insoluble matter was filtered off, and the filtrate was analyzed by HPLC. As a result, it contained 3.47 g of 1- (2-methyl-4-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Yield 91.6%. The filtrate was concentrated and purified with a silica gel column (ethyl acetate / acetone) to confirm the structure. The physical property values are shown in Table 1.
[0065]
Comparative Example 1
90 ml of ethanol and 5.5 ml of 6M hydrochloric acid were added to 8.5 g of 1- (2-chloro-5-pyridyl) methyl-3,5-dimethyl-2-nitroiminohexahydrotriazine, and the mixture was heated to reflux for 30 minutes. Since the solution was acidified by hydrochloric acid, no crystals were formed even when the reaction solution was cooled.
[0066]
Comparative Example 2
To 18 g of 1- (3-tetrahydrofuryl) methyl-3,5-dimethyl-2-nitroiminohexahydrotriazine, 340 g of dichloromethane was added, 155 g of 7% hydrochloric acid was added, and the mixture was heated to reflux for 4 hours. After cooling, 33 g of sodium chloride was added for liquid separation, and the aqueous layer was extracted four times with 50 g of dichloromethane. The extraction rate was 83%. The organic layers were combined and concentrated under reduced pressure, and ethyl acetate was added to crystallize to obtain 9.24 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Isolated yield 66.4%.
[0067]
Comparative Example 3
To 20 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-5-isopropyl-2-nitroiminohexahydrotriazine, 140 g of dichloromethane was added, 106 g of 13% sulfuric acid was added, and the mixture was heated to reflux for 8 hours. The reaction yield was 98%. Cooled and adjusted to pH 6.5 with 45% sodium hydroxide solution. After adjustment, 1- (3-tetrahydrofuryl) methyl-3-methyl-5-isopropyl-2-nitroiminohexahydrotriazine increased by 9%. The layers were separated and the aqueous layer was re-extracted with 140 g of dichloromethane. The organic layers were combined and concentrated under reduced pressure, and ethyl acetate was added to crystallize to obtain 10.3 g of 1- (3-tetrahydrofuryl) methyl-3-methyl-2-nitroguanidine. Isolated yield 73%.
[0068]
[Table 1]
[0069]
[Table 2]
[0070]
【The invention's effect】
As described above, according to the method of the present invention, substituted nitroguanidines useful as agricultural chemicals (especially insecticides) or intermediates thereof can be carried out without hydrolysis, and are complicated due to acid and water. Therefore, the target product can be obtained in a high yield with a simple method and is particularly excellent as a production method.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08684298A JP3655463B2 (en) | 1997-03-31 | 1998-03-31 | Process for producing nitroguanidines |
Applications Claiming Priority (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8017897 | 1997-03-31 | ||
| JP8283897 | 1997-04-01 | ||
| JP22381397 | 1997-08-20 | ||
| JP25896897 | 1997-09-24 | ||
| JP9-82838 | 1997-12-17 | ||
| JP9-347934 | 1997-12-17 | ||
| JP9-80178 | 1997-12-17 | ||
| JP9-223813 | 1997-12-17 | ||
| JP34793497 | 1997-12-17 | ||
| JP9-258968 | 1997-12-17 | ||
| JP08684298A JP3655463B2 (en) | 1997-03-31 | 1998-03-31 | Process for producing nitroguanidines |
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| Publication Number | Publication Date |
|---|---|
| JPH11236381A JPH11236381A (en) | 1999-08-31 |
| JP3655463B2 true JP3655463B2 (en) | 2005-06-02 |
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| JP08684298A Expired - Lifetime JP3655463B2 (en) | 1997-03-31 | 1998-03-31 | Process for producing nitroguanidines |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001328983A (en) * | 2000-05-19 | 2001-11-27 | Mitsui Chemicals Inc | Method for producing disubstituted nitroguanidine |
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