CN102206184B - 3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物杀虫剂 - Google Patents

3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物杀虫剂 Download PDF

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CN102206184B
CN102206184B CN 201010133736 CN201010133736A CN102206184B CN 102206184 B CN102206184 B CN 102206184B CN 201010133736 CN201010133736 CN 201010133736 CN 201010133736 A CN201010133736 A CN 201010133736A CN 102206184 B CN102206184 B CN 102206184B
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汪清民
赵奇奇
李永强
熊丽霞
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Nankai University
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Abstract

本发明涉及3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物及其作为杀虫剂应用,通式如(I)所示,其中各基团的意义见说明书。本发明通式(I)的化合物具有优异的杀虫活性,部分化合物对蚜虫、尖音库蚊、小菜蛾的杀虫活性超过了商品化品种乙虫腈(Ethiprole),能用于防治鳞翅目类、鞘翅目类、异翅目类、双翅目类、直翅目类以及同翅目类害虫。

Description

3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物杀虫剂
技术领域
本发明涉及3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物及其作为杀虫剂应用。
背景技术
以1-芳基吡唑为骨架的杀虫剂主要是以氟虫腈为代表的γ-氨基丁酸受体抑制剂,现有六个已经商品化或正在开发中的品种,它们分别是Fipronil(通用名氟虫腈,商品名Regent,锐劲特),Ethiprole(通用名乙虫腈,商品名Curbix,酷毕),Acetoprole(乙酰虫腈),Vaniliprole,Pyrafluprole和Pyriprole,它们的结构如下:
Figure GSA00000068096100011
Fipronil         Ethiprole        Acetoprole
May and Baker    Rhone-Poulenc    Rhone-Poulenc
Figure GSA00000068096100012
Vaniliprole      Pyrafluprole     Pyriprole
Rhone-Poulenc    Mitsubishi       Mitsubishi
氟虫腈于1988年由英国May and Baker公司发现,后来由法国Rhone-Poulenc公司开发。氟虫腈杀虫谱广,具有触杀、胃毒和中度内吸作用,既能防治地下害虫,又能防治地上害虫,既可用于茎叶处理和土壤处理,又可用于种子处理,可有效防治多种刺吸式和咀嚼式口器害虫。乙虫腈于1997年由Rhone-Poulenc发现,2008年作为防治稻飞虱的高效杀虫剂正式上市。乙虫腈的杀虫谱与氟虫腈有所不同,对鳞翅目的活性不如氟虫腈,但对高粱蚜和桃蚜的内吸活性远高于氟虫腈。
CN 1204123C公开了如下结构的一类N-苯基吡唑衍生物:
Figure GSA00000068096100021
CN 1915977A公开了如下结构的氯氟虫腈:
Figure GSA00000068096100022
发明内容
本发明的目的是提供一类3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物及应用,该类化合物具有优异的杀虫活性。
本发明是化学通式为(I)的3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物:
式中,R1代表1-6碳烷基或被一个或一个以上相同或不同的卤素原子取代的烷基;R2代表取代或未取代的烷基、烯基、炔基、环烷基、苯基、1-6碳烃羰基、1-6碳烃氧羰基、苯氧羰基、苄氧羰基、萘基、色满、2,3-二氢-1,4-苯并二噁嗪、4H-1,3-苯并二噁嗪、2,3-二氢-苯并呋喃、苯并呋喃、苯并噻唑、1,3-苯并噁唑、1,2-苯并异噁唑或苯并咪唑,各基团是未取代的,或是被一个或一个以上下述基团取代:卤素、1-4碳烷基、1-4碳烷氧基、1-4碳卤代烷基、1-4碳卤代烷氧基、1-4碳烷氧烷基、1-4碳烷硫基、1-4碳烷基亚磺酰基、1-4碳烷基磺酰基、硝基、氰基、羟基、羧基、1-4碳烷基羰基、1-4碳烷氧基羰基或亚胺基;
R3代表取代或未取代的烷基、烯基、炔基、环烷基、苯基、1-6碳烃羰基、1-6碳烃氧羰基、苯氧羰基、苄氧羰基、萘基、色满、2,3-二氢-1,4-苯并二噁嗪、4H-1,3-苯并二噁嗪、2,3-二氢-苯并呋喃、苯并呋喃、苯并噻唑、1,3-苯并噁唑、1,2-苯并异噁唑或苯并咪唑,各基团是未取代的,或是被一个或一个以上下述基团取代:卤素、1-4碳烷基、1-4碳烷氧基、1-4碳卤代烷基、1-4碳卤代烷氧基、1-4碳烷氧烷基、1-4碳烷硫基、1-4碳烷基亚磺酰基、1-4碳烷基磺酰基、硝基、氰基、羟基、羧基、1-4碳烷基羰基、1-4碳烷氧基羰基或亚胺基;
X代表O、S、NH;
n代表0、1。
本发明所述的3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物(I)中,优选:R1为甲基、三氟甲基、乙基;R2代表取代或未取代的烷基、烯基、炔基、环烷基;R3代表取代或未取代的烷基、烯基、炔基、环烷基、苯基、呋喃基;X代表O;n代表0,1。
所述的3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物(I)可以按如下方法制备:将化合物a和醛反应得到亚胺(b),化合物b与醇或硫醇或胺加成可制得n为0的3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物(I),再进一步氧化可制得n为1的3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物(I)。
Figure GSA00000068096100031
化合物a是市售的或是用已知方法制备的。
本发明还可用表1中列出的化合物来说明,但并不限定本发明。
本发明通式(I)的化合物具有优异的杀虫活性,能用于防治鳞翅目类、鞘翅目类、异翅目类、双翅目类、直翅目类以及同翅目类害虫。
本发明通式(I)的部分化合物对蚜虫、尖音库蚊、小菜蛾的杀虫活性超过了商品化品种乙虫腈(Ethiprole)。
本发明通式(I)的化合物可以直接使用,也可以加上农业上接受的载体使用,也可以和其它杀虫剂和(或)杀螨剂复配使用。
具体实施方式
以下结合实施例来进一步说明本发明:
实施例1:1-(2,6-二氯-4-三氟甲基)苯基-3-氰基-4-甲硫基-5-(三氯甲基亚甲氨基)吡唑(b1)的合成
将1-(2,6-二氯-4-三氟甲基)苯基-3-氰基-4-甲硫基-5-氨基吡唑(a1)(11mmol),35g三氯乙醛及1g
Figure GSA00000068096100041
分子筛混合,加热回流36h,蒸去三氯乙醛,残余物柱层析,得亚胺b1。收率44%,熔点113-115℃,1H NMR(CDCl3),δ8.82(s,1H,CH=N),7.74(s,2H,Ph),2.58(s,3H,CH3).Anal.Calcd for C14H6Cl5F3N4S(%):C,33.86;H,1.22;N,11.28;Found:C,33.99;H,1.21;N,11.12。
实施例2:1-(2,6-二氯-4-三氟甲基)苯基-3-氰基-4-乙硫基-5-(三氯甲基亚甲氨基)吡唑(b2)的合成
将1-(2,6-二氯-4-三氟甲基)苯基-3-氰基-4-乙硫基-5-氨基吡唑(a2)(11mmol),35g三氯乙醛及1g
Figure GSA00000068096100042
分子筛混合,加热回流36h,蒸去三氯乙醛,残余物柱层析,得亚胺b2。收率53%,熔点112-114℃,1H NMR(CDCl3),δ9.00(s,1H,CH=N),7.75(s,2H,Ph),2.95(q,3JHH=7.2Hz,2H,CH2),1.28(t,3JHH=7.2Hz,3H,CH3).Anal.Calcd forC15H8Cl5F3N4S(%):C,35.29;H,1.58;N,10.97;Found:C,35.21;H,1.59;N,10.97。
实施例3:1-(2,6-二氯-4-三氟甲基)苯基-3-氰基-4-甲硫基-5-(2,2,2-三氯-1-甲氧乙基)氨基吡唑(I1)的合成
将2mmol 1-(2,6-二氯-4-三氟甲基)苯基-3-氰基-4-甲硫基-5-(三氯甲基亚甲氨基)吡唑(b1)和10mL甲醇混合,加热回流,TLC监测反应。亚胺b1反应完毕后,除去绝大部分溶剂,剩余物柱层析,得白色固体I1。
实施例4:1-(2,6-二氯-4-三氟甲基)苯基-3-氰基-4-甲基亚磺酰基-5-(2,2,2-三氯-1-甲氧乙基)氨基吡唑(I11)的合成
15mL含1mmol 1-(2,6-二氯-4-三氟甲基)苯基-3-氰基-4-甲硫基-5-(2,2,2-三氯-1-甲氧乙基)氨基吡唑(I1)的二氯甲烷溶液中,加入1mL三氟乙酸和0.23mL 30%的双氧水,反应3h,TLC监测反应。加入1g亚硫酸氢钠分解多余的过氧化氢。加入15mL水,分液,有机相依次以15mL水和15mL食盐水洗涤,无水硫酸钠干燥。过滤,脱溶,粗品柱层析,得白色固体I11。
同样,可以合成本发明的其它化合物,见表1。
实施例5:蚕豆蚜的叶面触杀活性
将一定量的待测化合物和乙虫腈溶于适量N,N-二甲基甲酰胺中,用含有TW-20的水配成200mg L-1的药液,并根据需要稀释特定浓度。将带有约60头蚜虫的嫩枝在药液中浸5s,除去叶面上多余的药液,将试虫转移至正常条件下生长,24h后查看结果。每个浓度在相同条件下重复三次,并设不含药剂的空白试验做对照。表2和表3为部分化合物的测试结果。
实施例6:对尖音库蚊幼虫活性
将样品用丙酮配制成一定浓度的母液,在100mL的烧杯内加入90mL水,分别加入不同量的样品母液,再加10mL含有10头4龄蚊幼虫的饲养水。每处理重复3次。处理后每天添加少许饲料,直到蚊幼虫全部化蛹或死亡。随时将化的蛹吸走。空白对照加与试验体积相同丙酮的水溶液。表4为部分化合物的测试结果。
实施例7:对小菜蛾幼虫活性
将一定量的待测化合物和乙虫腈溶于适量N,N-二甲基甲酰胺中,用含有TW-20的水配成200mg L-1的药液,并根据需要稀释特定浓度。将新鲜甘蓝叶切成片(6cm×2cm),在待测药液中浸3s,用滤纸吸去多余药液,在空气中晾干后放入玻璃管中,每管放入7头健康的小菜蛾3龄幼虫,24h后随时添加新鲜叶片,3d后观察结果。每个浓度在相同条件下重复三次,并设不含药剂的空白试验做对照。表5为部分化合物的测试结果。
表13-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物(I)列表
Figure GSA00000068096100051
  编号   R1   R2   R3   X   n   熔点(℃)
  I1   Me   Me   CCl3   O   0   91-92
  I2   Me   Et   CCl3   O   0   127-128
  I3   Me   n-Pr   CCl3   O   0   147-149
  I4   Me   FCH2CH2   CCl3   O   0   129-131
  I5   Me   ClCH2CH2   CCl3   O   0   142-144
  I6   Et   Me   CCl3   O   0   123-124
  I7   Et   Et   CCl3   O   0   137-139
  I8   Et   n-Pr   CCl3   O   0   119-121
  I9   Et   FCH2CH2   CCl3   O   0   147-149
  I10   Et   ClCH2CH2   CCl3   O   0   123-125
  I11   Me   Me   CCl3   O   1   110-112
  I12   Me   Et   CCl3   O   1   98-100
  I13   Me   n-Pr   CCl3   O   1   158-160
  I14a   Me   FCH2CH2   CCl3   O   1   150-152
  I15b   Me   FCH2CH2   CCl3   O   1   141-143
  I16c   Me   ClCH2CH2   CCl3   O   1   151-153
  I17d   Me   ClCH2CH2   CCl3   O   1   133-135
  I18   Et   Me   CCl3   O   1   147-149
  I19   Et   Et   CCl3   O   1   133-134
  I20   Et   n-Pr   CCl3   O   1   49-51
  I21   Et   FCH2CH2   CCl3   O   1   67-69
  I22   Et   ClCH2CH2   CCl3   O   1   52-54
  I23   CF3   Me   Ph   O   1   104-105
  I24   CF3   Me   4-NO2-Ph   O   1   143-145
  I25   CF3   Me   2-furanyl   O   1   152-154
  I26   CF3   Me   styrenyl   O   1   104-107
  I27   Me   Me   CCl3   S   0   油状物
  I28   Me   Me   CCl3   S   1   油状物
  I29   Me   Me   CCl3   NH   0   油状物
  I30   Me   Me   CCl3   NH   1   油状物
注:a,b:I14和I15为两对对映异构体;c,d:I16和I17为两对对应异构体。
表2部分化合物和乙虫腈对蚜虫的叶面触杀活性
Figure GSA00000068096100061
Figure GSA00000068096100071
表3部分化合物和乙虫腈对蚜虫叶面触杀活性的LC50
  编号   回归方程  LC50(mg kg-1)   毒力指数
  I11   y=-2.3051+5.0099x   2.8848   4.2
  I13   y=-2.1989+4.9845x   2.7616   4.3
  I20   y=-0.7833+4.5433x   1.4873   7.9
  乙虫腈   y=-7.9808+7.4646x   11.7263   1
表4部分化合物和乙虫腈杀蚊幼虫活性
Figure GSA00000068096100072
Figure GSA00000068096100081
表5部分化合物和乙虫腈对小菜蛾的活性
Figure GSA00000068096100082

Claims (3)

1.一种3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物,其特征在于其具有通式(I)所示结构:
Figure FSB00001045549500011
式中R1=Me,R2=Me、Et、n-Pr、FCH2CH2或ClCH2CH2,R3=CCl3,X=O,n=0;
或者R1=Et,R2=Me、Et、n-Pr、FCH2CH2或ClCH2CH2,R3=CCl3,X=O,n=0;
或者R1=Me,R2=Me、Et、n-Pr、FCH2CH2或ClCH2CH2,R3=CCl3,X=O,n=1;
或者R1=Et,R2=Me、Et、n-Pr或FCH2CH2,R3=CCl3,X=O,n=1。
2.权利要求1所述的3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物作为杀虫剂在防治鳞翅目、双翅目类、同翅目害虫中的应用。
3.权利要求1所述的3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物作为杀虫剂在防治蚜虫、尖音库蚊、小菜蛾中的应用。
CN 201010133736 2010-03-29 2010-03-29 3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物杀虫剂 Expired - Fee Related CN102206184B (zh)

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PCT/CN2010/079844 WO2011120312A1 (zh) 2010-03-29 2010-12-16 3-氰基-1-(2,6-二氯-4-三氟甲基苯基)吡唑衍生物杀虫剂

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CN1398515A (zh) * 2002-07-30 2003-02-26 王正权 N-苯基吡唑衍生物杀虫剂
CN1915977A (zh) * 2005-08-18 2007-02-21 李坚 氯氟虫腈及其制备和用途

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AU2003211629B8 (en) * 2002-03-05 2009-01-22 Boehringer Ingelheim Animal Health USA Inc. 5-substituted-alkylaminopyrazole derivatives as pesticides
ATE470661T1 (de) * 2004-03-24 2010-06-15 Merial Ltd 5-aminoalkylpyrazolderivate als pestizide mittel

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CN1398515A (zh) * 2002-07-30 2003-02-26 王正权 N-苯基吡唑衍生物杀虫剂
CN1915977A (zh) * 2005-08-18 2007-02-21 李坚 氯氟虫腈及其制备和用途

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