新型含(卤代)烷氧基类双酰胺化合物的合成、杀虫活性及构效关系研究

Synthesis,Insecticidal Activities,and Structure-Activity Relationship Studies of Novel Diamide Compounds Containing(Halogenated)Alkoxy Group

为了发现结构新颖、活性优异、环境友好的新型杀虫剂,以环丙氟虫胺为先导化合物,在其苯胺部分引入(卤代)烷氧基单元,设计合成了一系列未见文献报道的新型含(卤代)烷氧基类双酰胺化合物,其结构经过^(1)H NMR、^(13)C NMR和HRMS确证.初步的生物活性测试结果表明,大部分化合物对小菜蛾表现出优异的杀虫活性,其中N-[2-溴-4-(全氟丙烷-2-基)-6-(二氟甲氧基)苯基]-3-[N-(环丙甲基)苯甲酰胺基]-4-氟苯甲酰胺(4a)、N-[2-溴-4-(全氟丙烷-2-基)-6-(三氟甲氧基)苯基]-3-[N-(环丙甲基)苯甲酰胺基]-4-氟苯甲酰胺(4b)、N-(2-溴-6-(二氟甲氧基)-4-(全氟丙烷-2-基)苯基)-3-(N-(环丙基甲基)苯甲酰胺基)-2-氟苯甲酰胺(4h)、N-[2-溴-6-(二氟甲氧基)-4-(全氟丙烷-2-基)苯基]-3-[4-氰基-N-(环丙基甲基)苯甲酰胺]-2-氟苯甲酰胺(4j)~N-(3-((2-溴-6-(二氟甲氧基)-4-(全氟丙烷-2-基)苯基)氨基甲酰基)-2-氟苯基)-N-(环丙基甲基)异烟酰胺(4o)、N-(3-((2-溴-6-(二氟甲氧基)-4-(全氟丙烷-2-基)苯基)氨基甲酰基)-2-氟苯基)-N-(环丙基甲基)-2,4-二氟苯甲酰胺(4q)和N-(3-((2-溴-6-(二氟甲氧基)-4-(全氟丙烷-2-基)苯基)氨基甲酰基)-2-氟苯基)-N-(环丙基甲基)-2-氟异烟酰胺(4t)在1mg/L浓度下显示出100%的杀虫活性.同时,化合物4a不仅对小菜蛾和二化螟的杀虫活性接近于环丙氟虫胺,而且对苜蓿蚜和朱砂叶螨的杀虫活性也较高,表现出比环丙氟虫胺更广的杀虫谱,其田间试验正在进行中.

In order to discover new pesticide with novel structure,good activity and environmental friendliness,a series of new diamide compounds containing(halogenated)alkoxy group were designed and synthesized through introducing(halogenated)alkoxy group based on the structure of cyproflanilide.Their structures were confirmed by~1H NMR,~(13)C NMR and HRMS.The bioassay results showed that most of the compounds exhibit excellent insecticidal activity against Plutella xylostella.Such as N-(2-bromo-6-(difluoromethoxy)-4-(perfluoropropan-2-yl)phenyl)-3-(N-(cyclopropylmethyl)-4-fluorobenzamido)-2-fluorobenzamide(4a),N-(2-bromo-4-(perfluoropropan-2-yl)-6-(trifluoromethoxy)phenyl)-3-(N-(cyclopropylmethyl)-4-fluorobenzamido)-2-fluorobenzamide(4b),N-(2-bromo-6-(difluoromethoxy)-4-(perfluoropropan-2-yl)phenyl)-3-(N-(cyclopropylmethyl)benzamido)-2-fluorobenzamide(4h),N-(2-bromo-6-(difluoromethoxy)-4-(perfluoropropan-2-yl)phenyl)-3-(4-cyano-N-(cyclopropylmethyl)benzamido)-2-fluorobenzamide(4j)~N-(3-((2-bromo-6-(difluoromethoxy)-4-(perfluoropropan-2-yl)phenyl)carbamoyl)-2-fluorophenyl)-N-(cyclopropylmethyl)isonicotinamide(4o),N-(3-((2-bromo-6-(difluoromethoxy)-4-(perfluoropropan-2-yl)phenyl)carbamoyl)-2-fluorophenyl)-N-(cyclopropylmethyl)-2,4-difluorobenzamide(4q)and N-(3-((2-bromo-6-(difluoromethoxy)-4-(perfluoropropan-2-yl)phenyl)carbamoyl)-2-fluorophenyl)-N-(cyclopropylmethyl)-2-fluoroisonicotinamide(4t)showed 100%mortality at 1 mg/L.Moreover,compound 4a not only has good insecticidal activities against Plutella xylostella and Chilo suppressalis close to cyproflanilide,but also shows better activities against Aphis craccivora and Tetranychus cinnabarinus than cyproflanilide,exhibiting a broader insecticidal spectrum.The field trials of compound 4a are ongoing.