JPS6326758B2 - - Google Patents
Info
- Publication number
- JPS6326758B2 JPS6326758B2 JP55015580A JP1558080A JPS6326758B2 JP S6326758 B2 JPS6326758 B2 JP S6326758B2 JP 55015580 A JP55015580 A JP 55015580A JP 1558080 A JP1558080 A JP 1558080A JP S6326758 B2 JPS6326758 B2 JP S6326758B2
- Authority
- JP
- Japan
- Prior art keywords
- mol
- tertiary
- group
- formula
- allyl
- 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
Links
- -1 bicyclic enol ether Chemical class 0.000 claims description 13
- 239000003054 catalyst Substances 0.000 claims description 8
- 230000002378 acidificating effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000007363 ring formation reaction Methods 0.000 claims description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- 150000003997 cyclic ketones Chemical class 0.000 claims description 3
- 125000004192 tetrahydrofuran-2-yl group Chemical group [H]C1([H])OC([H])(*)C([H])([H])C1([H])[H] 0.000 claims description 3
- 125000004187 tetrahydropyran-2-yl group Chemical group [H]C1([H])OC([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 claims description 3
- SXVPOSFURRDKBO-UHFFFAOYSA-N Cyclododecanone Chemical compound O=C1CCCCCCCCCCC1 SXVPOSFURRDKBO-UHFFFAOYSA-N 0.000 description 26
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 150000001875 compounds Chemical class 0.000 description 12
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 12
- 238000009835 boiling Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- ATVJXMYDOSMEPO-UHFFFAOYSA-N 3-prop-2-enoxyprop-1-ene Chemical compound C=CCOCC=C ATVJXMYDOSMEPO-UHFFFAOYSA-N 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010626 work up procedure Methods 0.000 description 5
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 4
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 150000003254 radicals Chemical class 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 3
- 239000012969 di-tertiary-butyl peroxide Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PAOHAQSLJSMLAT-UHFFFAOYSA-N 1-butylperoxybutane Chemical compound CCCCOOCCCC PAOHAQSLJSMLAT-UHFFFAOYSA-N 0.000 description 2
- JKTCBAGSMQIFNL-UHFFFAOYSA-N 2,3-dihydrofuran Chemical compound C1CC=CO1 JKTCBAGSMQIFNL-UHFFFAOYSA-N 0.000 description 2
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 2
- DISYXOSXMGBXCR-UHFFFAOYSA-N 2-[3-[(2-methylpropan-2-yl)oxy]propyl]cyclohexan-1-one Chemical compound CC(C)(C)OCCCC1CCCCC1=O DISYXOSXMGBXCR-UHFFFAOYSA-N 0.000 description 2
- OTWQJZKIVUCQOQ-UHFFFAOYSA-N 2-[3-[(2-methylpropan-2-yl)oxy]propyl]cyclooctan-1-one Chemical compound CC(C)(C)OCCCC1CCCCCCC1=O OTWQJZKIVUCQOQ-UHFFFAOYSA-N 0.000 description 2
- NRAKYXXDEXCVMV-UHFFFAOYSA-N 2-prop-2-enoxyoxane Chemical compound C=CCOC1CCCCO1 NRAKYXXDEXCVMV-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- BUDQDWGNQVEFAC-UHFFFAOYSA-N Dihydropyran Chemical compound C1COC=CC1 BUDQDWGNQVEFAC-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 238000007259 addition reaction Methods 0.000 description 2
- 238000010533 azeotropic distillation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- IIRFCWANHMSDCG-UHFFFAOYSA-N cyclooctanone Chemical compound O=C1CCCCCCC1 IIRFCWANHMSDCG-UHFFFAOYSA-N 0.000 description 2
- 238000006266 etherification reaction Methods 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 1
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- MBWFQHWMLCQPMB-UHFFFAOYSA-N 2-[3-[(2-methylpropan-2-yl)oxy]propyl]cyclopentan-1-one Chemical compound CC(C)(C)OCCCC1CCCC1=O MBWFQHWMLCQPMB-UHFFFAOYSA-N 0.000 description 1
- BNMTZMVOUYLKCV-UHFFFAOYSA-N 2-but-3-en-2-yloxyoxane Chemical compound C=CC(C)OC1CCCCO1 BNMTZMVOUYLKCV-UHFFFAOYSA-N 0.000 description 1
- BYDRTKVGBRTTIT-UHFFFAOYSA-N 2-methylprop-2-en-1-ol Chemical compound CC(=C)CO BYDRTKVGBRTTIT-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000004808 allyl alcohols Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000008378 aryl ethers Chemical class 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- FUSUHKVFWTUUBE-UHFFFAOYSA-N buten-2-one Chemical compound CC(=O)C=C FUSUHKVFWTUUBE-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 1
- 239000000039 congener Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007342 radical addition reaction Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000006798 ring closing metathesis reaction Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/94—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems condensed with rings other than six-membered or with ring systems containing such rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
- C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
- C07C45/69—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by addition to carbon-to-carbon double or triple bonds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
- C07C49/385—Saturated compounds containing a keto group being part of a ring
- C07C49/517—Saturated compounds containing a keto group being part of a ring containing ether groups, groups, groups, or groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/04—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
- C07D307/18—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/20—Oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
- C07D309/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
- C07D309/08—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D309/10—Oxygen atoms
- C07D309/12—Oxygen atoms only hydrogen atoms and one oxygen atom directly attached to ring carbon atoms, e.g. tetrahydropyranyl ethers
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/74—Benzo[b]pyrans, hydrogenated in the carbocyclic ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Furan Compounds (AREA)
- Pyrane Compounds (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Description
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Claims (1)
- ãç¹èš±è«æ±ã®ç¯å²ã ïŒ äžè¬åŒïŒ ãåŒäžãïœã¯ïŒã12ã®å€ã衚ãããã€R1ãR3ã¯
æ°ŽçŽ åååã¯C1ãC4âã¢ã«ãã«åºã衚ãããã§
瀺ãããäºç°åŒãšããŒã«ãšãŒãã«ããäžè¬åŒïŒ ãåŒäžãïœã¯åèšãæå³ãããã§ç€ºãããç°åŒã±
ãã³ã«ã¢ãªã«ååç©ãã©ãžã«ã«ä»å ããã€åŒç¶ã
é žæ§è§Šåªã«ãã€ãŠç°åããããšã«ãã補é ããæ¹
æ³ã«ãããŠãäžè¬åŒïŒ ãåŒäžãR1ãR3ã¯åèšãæå³ãR4ã¯ç¬¬äžçŽâã
ãã«åºãããã©ããããã©ã³âïŒâã€ã«åºåã¯ã
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ããã¢ãªã«ãšãŒãã«ãã¢ãªã«ååç©ãšããŠäœ¿çš
ããã©ãžã«ã«ä»å ã㊠äžè¬åŒïŒ ãåŒäžãR1ãR3ã¯åèšãšåãæ°ŽçŽ åååã¯C1ã
C4âã¢ã«ãã«åºãæå³ããR4ã¯ç¬¬äžçŽâããã«
åºãããã©ããããã©ã³âïŒâã€ã«åºåã¯ããã©
ããããã©ã³âïŒâã€ã«åºã衚ãããã§ç€ºããã
ååç©ã圢æããã€ãã§é žæ§è§Šåªã«ãã€ãŠç°åã
ãããšã«ãã補é ããããšãç¹åŸŽãšããäºç°åŒãš
ããŒã«ãšãŒãã«ã®è£œæ³ã
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3102445A DE3102445C2 (de) | 1980-02-13 | 1981-01-26 | Steuersystem fÌr mehrere SticknÀhmaschinen |
| US06/231,089 US4369722A (en) | 1980-02-08 | 1981-02-03 | Control system for a plurality of embroidery sewing machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792906296 DE2906296A1 (de) | 1979-02-19 | 1979-02-19 | Verfahren zur herstellung von bicyclischen enolaethern sowie aether von 2-(3-hydroxyprop-1-yl)-cycloalkanonen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55111437A JPS55111437A (en) | 1980-08-28 |
| JPS6326758B2 true JPS6326758B2 (ja) | 1988-05-31 |
Family
ID=6063293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1558080A Granted JPS55111437A (en) | 1979-02-19 | 1980-02-13 | Manufacture of ether and bicyclic enolether of 22*33hydroxypropp11yl**cycloalkanone |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4268445A (ja) |
| EP (1) | EP0014963B1 (ja) |
| JP (1) | JPS55111437A (ja) |
| DE (2) | DE2906296A1 (ja) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3137939A1 (de) * | 1981-09-24 | 1983-05-19 | Consortium fÃŒr elektrochemische Industrie GmbH, 8000 MÃŒnchen | "substituierte macrobicyclische ether, deren herstellung und verwendung" |
| JPS6212737A (ja) * | 1985-07-10 | 1987-01-21 | Ube Ind Ltd | æ°èŠãªïŒïŒå¡ç°ååç©åã³ãã®è£œé æ¹æ³ |
| US4999439A (en) * | 1990-03-22 | 1991-03-12 | International Flavors & Fragrances Inc. | Alkyl-substituted tetra- or hexahydrobenzopyran derivatives, organoleptic uses thereof and process for preparing same |
| US20100212217A1 (en) * | 2007-09-07 | 2010-08-26 | Furanix Technologies B.V. | Hydroxymethylfurfural Ethers from HMF and Olefins |
| EP2540712A1 (de) | 2011-06-30 | 2013-01-02 | Basf Se | Verfahren zu Herstellung cyclischer Enolether |
| EP2540713A1 (de) | 2011-06-30 | 2013-01-02 | Basf Se | Makrocyclische Lactone |
| US8410293B2 (en) | 2011-06-30 | 2013-04-02 | Basf Se | Process for the preparation of cyclic enol ethers |
| US8648031B2 (en) | 2011-06-30 | 2014-02-11 | Basf Se | Macrocyclic lactones |
| EP3050869B1 (de) * | 2015-01-30 | 2019-10-02 | Symrise AG | Verfahren zur Herstellung von substituierten Alkylcycloalkanonen |
| EP3339298B1 (en) * | 2016-12-20 | 2021-07-07 | International Flavors & Fragrances Inc. | Methods of preparing oxa-bicycloalkene |
| MX2023001289A (es) | 2020-07-31 | 2023-02-22 | S H Kelkar And Company Ltd | Odorantes y composiciones que comprenden odorantes. |
| CN118908931B (zh) * | 2024-06-28 | 2025-09-09 | å®åŸœåäžéŠæåè¥æéå ¬åž | äžç§ç¯åäºå é ¯äžéŽäœåç¯ç¯éçå¶å€æ¹æ³ |
| WO2026068726A1 (en) * | 2024-09-27 | 2026-04-02 | Firmenich Sa | Synthesis of oxa-bicycloalkenes |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3907831A (en) * | 1969-05-29 | 1975-09-23 | Firmenich & Cie | Process for preparing lactones |
| BE786518A (fr) * | 1971-07-21 | 1973-01-22 | Haarmann & Reimer Gmbh | Procede de preparation d'oxa-bicyclo-alcenes |
-
1979
- 1979-02-19 DE DE19792906296 patent/DE2906296A1/de not_active Withdrawn
-
1980
- 1980-01-31 US US06/117,128 patent/US4268445A/en not_active Expired - Lifetime
- 1980-02-13 JP JP1558080A patent/JPS55111437A/ja active Granted
- 1980-02-14 DE DE8080100747T patent/DE3064073D1/de not_active Expired
- 1980-02-14 EP EP80100747A patent/EP0014963B1/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0014963A2 (de) | 1980-09-03 |
| DE2906296A1 (de) | 1980-08-28 |
| JPS55111437A (en) | 1980-08-28 |
| DE3064073D1 (en) | 1983-08-18 |
| EP0014963A3 (en) | 1980-11-26 |
| US4268445A (en) | 1981-05-19 |
| EP0014963B1 (de) | 1983-07-13 |
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