JP4824968B2 - ホスホン酸誘導体及びその酸付加塩、並びにそれを用いた農園芸用病害防除剤 - Google Patents
ホスホン酸誘導体及びその酸付加塩、並びにそれを用いた農園芸用病害防除剤 Download PDFInfo
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- JP4824968B2 JP4824968B2 JP2005237942A JP2005237942A JP4824968B2 JP 4824968 B2 JP4824968 B2 JP 4824968B2 JP 2005237942 A JP2005237942 A JP 2005237942A JP 2005237942 A JP2005237942 A JP 2005237942A JP 4824968 B2 JP4824968 B2 JP 4824968B2
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- phosphonic acid
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 title claims description 58
- 201000010099 disease Diseases 0.000 title claims description 57
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- 150000003839 salts Chemical class 0.000 title claims description 37
- 239000003795 chemical substances by application Substances 0.000 title claims description 24
- 229940042400 direct acting antivirals phosphonic acid derivative Drugs 0.000 title claims description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims description 60
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- 125000000217 alkyl group Chemical group 0.000 claims description 30
- 125000001424 substituent group Chemical group 0.000 claims description 21
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 18
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 16
- 239000004480 active ingredient Substances 0.000 claims description 8
- 125000000392 cycloalkenyl group Chemical group 0.000 claims description 8
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 8
- 125000000623 heterocyclic group Chemical group 0.000 claims description 7
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- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052801 chlorine Inorganic materials 0.000 claims description 6
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 6
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 6
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- 125000003709 fluoroalkyl group Chemical group 0.000 claims description 6
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- 238000000034 method Methods 0.000 description 41
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
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Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
また、本発明の農園芸用病害防除剤は、下記一般式(I)で表されるホスホン酸誘導体及びその酸付加塩からなる群から選択される少なくとも一つの化合物を有効成分として含有することを特徴とするものである。
さらに、上記一般式(I)中のR3は同一であっても異なっていてもよく、それぞれ水素原子又は炭素数1〜4のアルキル基を表す。このような炭素数1〜4のアルキル基としては、直鎖状、分岐状及び環状のアルキル基のいずれであってもよく、例えばメチル基、エチル基、n−プロピル基、i−プロピル基、n−ブチル基、i−ブチル基、sec−ブチル基、tert−ブチル基が挙げられる。
で表される方法(A法)、下記反応式(B):
で表される方法(B法)、及び下記反応式(C):
で表される方法(C法)を挙げることができる。
先ず、上記反応式(A)を採用して一般式(I)で表されるホスホン酸誘導体及びその酸付加塩を製造する方法(A法)について説明する。すなわち、A法においては、先ず、一般式(I−a)で表されるホスホン酸誘導体(一般式(I)で表されるホスホン酸誘導体のR2がHである化合物)を製造し、次に、得られた一般式(I−a)で表されるホスホン酸誘導体を用いて一般式(I)で表されるホスホン酸誘導体を得る。
次に、上記反応式(B)を採用して一般式(I)で表されるホスホン酸誘導体及びその酸付加塩を製造する方法(B法)について説明する。すなわち、B法においては、先ず、一般式(I−a)で表されるホスホン酸誘導体(一般式(I)で表されるホスホン酸誘導体のR2がHである化合物)を製造し、次に、得られた一般式(I−a)で表されるホスホン酸誘導体を用いて、一般式(I)で表されるホスホン酸誘導体を得る。
次に、上記反応式(C)を採用して一般式(I)で表されるホスホン酸誘導体及びその酸付加塩を製造する方法(C法)について説明する。上記反応式(C)で表されるホスホン酸誘導体及びその酸付加塩を製造する方法(C法)としては、例えばSynthesis,(3) 263−3 (1992)に記載された方法を採用することができる。すなわち、C法においては、先ず、一般式(IX)で表されるアルデヒド誘導体と一般式(VIII)で表される2,6−ジクロロ−4−ピリジルメチルアミンとを脱水反応させて一般式(X)で表されるイミン誘導体を製造し、三塩化りんの存在下、得られた一般式(X)で表されるイミン誘導体を一般式(XI)で表されるアルコール誘導体と反応させて一般式(I−b)で表されるホスホン酸誘導体(一般式(I)で表されるホスホン酸誘導体のR2がHであり、且つnが0である化合物)を製造する。
先ず、上記A〜C法において採用されている還元的アミノ化反応について説明する。このような還元的アミノ化反応としては、例えばJ.Am.Chem.Soc.,93,2897(1971);Synthesis,135(1975);Org.React.,4,174(1948);J.Org.Chem.,61,3849(1996);Tetrahedron Letters,31,5595(1990)等の文献に記載されている方法を挙げることができる。
次に、上記A〜C法において採用されているアルキル化反応について説明する。このようなアルキル化反応としては、通常のアルキル化反応の反応条件を利用することができる。また、このようなアルキル化反応は、溶媒中で行ってもよく、無溶媒条件下で行ってもよい。このような溶媒中でのアルキル化反応において使用する溶媒としては、ベンゼン、トルエン、キシレン、ヘキサン等の炭化水素類;塩化メチレン、クロロホルム、四塩化炭素等のハロゲン化炭化水素類;ジエチルエーテル、ジイソプロピルエーテル、テトラヒドロフラン、ジオキサン等のエーテル類;アセトン、メチルエチルケトン等のケトン類;その他、アセトニトリル、ジメチルホルムアミド、1−メチル−2−ピロリジノン、ジメチルスルホキシド等が挙げられる。
2−[(2,6−ジクロロ−4−ピリジルメチル)アミノ]−2−フェニルエチルホスホン酸ジエチル(化合物I−13)を合成した。
s:一重線、 d:二重線、 t:三重線、 q:四重線、 qui:五重線、 m:多重線、 br:ブロードライン。
2−(4−トリフルオロメチルフェニル)−2−[(2,6−ジクロロ−4−ピリジルメチル)アミノ]エチルホスホン酸ジエチル(化合物I−26)を合成した。
2−[(2,6−ジクロロ−4−ピリジルメチル)メチルアミノ]−2−フェニルエチルホスホン酸ジエチル(化合物I−14)を合成した。
2−(4−クロロフェニル)−2−[(2,6−ジクロロ−4−ピリジルメチル)イソブチルアミノ]エチルホスホン酸ジエチル(化合物I−21)を合成した。
3−(4−クロロフェニル)−3−[(2,6−ジクロロ−4−ピリジルメチル)アミノ]プロピルホスホン酸ジエチル(化合物I−22)を合成した。
1−シクロプロピル−1−[(2,6−ジシクロ−4−ピリジルメチル)アミノ]メチルホスホン酸ジエチル(化合物I−3)を合成した。
以下に示す各成分を粉砕混合して、粉剤とした。
化合物(I−1) 3
クレー 40
タルク 57。
以下に示す各成分を粉砕混合して、水和剤とし、水で希釈した。
化合物(I−3) 50
リグニンスルホン酸塩 5
アルキルスルホン酸塩 3
珪藻土 42。
以下に示す各成分を均一に混合した後、水を加えて練り合わせ、押し出し式造粒機で粒状に加工乾燥して粒剤とした。
化合物(I−6) 5
ベンナイト 43
クレー 45
リグニンスルホン酸塩 7。
以下に示す各成分を均一に混合溶解して乳剤とした。
化合物(I−10) 20
ポリオキシエチレンアルキルアリールエーテル 10
ポリオキシエチレンソルビタンモノラウレート 3
キシレン 67。
先ず、水田土を詰めた1/10000aワグネルポットに3葉期のイネ(品種:コシヒカリ)を移植し20〜35日後、製剤例3に準じて調整した粒剤を所定濃度(250g/10a)となるように水面施用した。
〈発病度〉 〈発病面積率(%)〉
0 0
1 0より大きく0.5未満
2 0.5以上1未満
3 1以上2未満
4 2以上5未満
5 5以上10未満
6 10以上25未満
7 25以上50未満
8 50以上80未満
9 80以上100未満
10 枯死。
防除価=(1−処理区発病度/無処理区発病度)×100
このようにして算出して得られた防除価を表6に示す。
先ず、角型ポット(1.5cmx2.0cm)を用いて、温室内で栽培した分げつ期のコムギ(品種:農林61号)に、製剤例2に準じて調製した水和剤を、所定濃度(90g/ha)となるように水で希釈して懸濁し、1000L/haの割合で散布した。
(調査基準)
〈発病度〉 〈発病面積率(%)〉
0 0
1 0より大きく10未満
2 10以上20未満
3 20以上30未満
4 30以上70未満
5 70以上。
防除価=(1−処理区発病度/無処理区発病度)×100
このようにして算出して得られた防除価を表7に示す。
Claims (2)
- 下記一般式(I)で表されることを特徴とするホスホン酸誘導体及びその酸付加塩。
[式中、R1は水素原子、炭素数1〜6のアルキル基、炭素数3〜6のシクロアルキル基、炭素数3〜6のシクロアルケニル基、環上に置換基(a)を有していてもよいベンゼン環及び環上に置換基(a)を有していてもよい5又は6員環から構成されるヘテロ環からなる群から選択されるいずれかを表し、置換基(a)はフッ素原子、塩素原子、臭素原子、ヨウ素原子、炭素数1〜4のアルキル基、炭素数1〜4のフルオロアルキル基、炭素数1〜4のアルコキシ基、炭素数1〜4のフルオロアルコシキ基、フェニル基及びシアノ基からなる群から選択される少なくとも1種であり;R2は水素原子又は炭素数1〜4のアルキル基を表し;R3は同一であっても異なっていてもよく、それぞれ水素原子又は炭素数1〜4のアルキル基を表し;nは0〜2の整数を表す。] - 下記一般式(I)で表されるホスホン酸誘導体及びその酸付加塩からなる群から選択される少なくとも一つの化合物を有効成分として含有することを特徴とする農園芸用病害防除剤。
[式中、R1は水素原子、炭素数1〜6のアルキル基、炭素数3〜6のシクロアルキル基、炭素数3〜6のシクロアルケニル基、環上に置換基(a)を有していてもよいベンゼン環及び環上に置換基(a)を有していてもよい5又は6員環から構成されるヘテロ環からなる群から選択されるいずれかを表し、置換基(a)はフッ素原子、塩素原子、臭素原子、ヨウ素原子、炭素数1〜4のアルキル基、炭素数1〜4のフルオロアルキル基、炭素数1〜4のアルコキシ基、炭素数1〜4のフルオロアルコシキ基、フェニル基及びシアノ基からなる群から選択される少なくとも1種であり;R2は水素原子又は炭素数1〜4のアルキル基を表し;R3は同一であっても異なっていてもよく、それぞれ水素原子又は炭素数1〜4のアルキル基を表し;nは0〜2の整数を表す。]
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| DE3326510A1 (de) * | 1983-07-22 | 1985-01-31 | Bayer Ag, 5090 Leverkusen | Phosphor(phosphon)saeureester |
| PL138019B1 (en) * | 1983-11-21 | 1986-08-30 | Univ Im A Mickiewicza | Process for preparing novel diethyl esters of n-aminosalicylophosphonic acids |
| PL138091B1 (en) * | 1983-11-21 | 1986-08-30 | Univ Im A Mickiewicza | Process for preparing novel n-aminosalicylophosphonic acids |
| EP0334813B1 (de) * | 1988-03-25 | 1994-02-02 | Ciba-Geigy Ag | Mittel zum Schutz von Pflanzen gegen Krankheiten |
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