Synthesis, insecticidal activities, and structure–activity relationships of 1,3,4‐oxadiazole‐ring‐containing pyridylpyrazole‐4‐carboxamides as novel insecticides of the anthranilic diamide family
作者:Abdalla Khallaf、Ping Wang、Shuping Zhuo、Hongjun Zhu、Hui Liu
DOI:10.1002/jhet.4346
日期:2021.11
The preparation of novel anthranilic diamide derivatives is extremely important for agricultural pest control. In this study, pyridylpyrazole-4-carboxamides containing a 1,3,4-oxadiazole ring were designed and synthesized via the dehydration of aromatic hydrazine derivatives and formanilides in the presence of an alkali. The insecticidal activities of these new compounds against the diamondback moth
新型邻氨基苯甲酰胺衍生物的制备对于农业害虫防治极为重要。在这项研究中,通过芳香肼衍生物和甲酰苯胺在碱存在下的脱水,设计并合成了含有 1,3,4-恶二唑环的吡啶基吡唑-4-甲酰胺。评估了这些新化合物对小菜蛾(Plutella xylostella)的杀虫活性。N-(4-chloro-2-methyl-6-(5-(4-nitrophenyl)-1,3,4-oxadiazol-2-yl)phenyl)-5-methyl-1-(pyridin-2-yl) -1H-吡唑-4-甲酰胺 ( 8h6 ) 在100、50、10、5和 1 μg ml -1 的浓度下显示出 67%、50%、34%、20% 和 17% 的活性, 分别。密度泛函理论计算表明,1,3,4-恶二唑环的引入显着改变了最高占据和最低未占据分子轨道的电子分布,导致这些化合物的能隙比众所周知的杀虫剂氯虫苯甲酰胺大得多,这可能是它们较低的活性的原因。本研究的结果表明,被