含硝基亚氨基咪唑烷脲类化合物的合成及生物活性

Synthesis and Biological Activities of Urea Derivatives Containing 2-imidazolidine

摘要: 为了寻找新的高效烟碱类杀虫剂,用异氰酸酯与2-硝基亚氨基咪唑烷反应,得到10个含硝基亚氨基咪唑烷脲类新化合物,其结构均通过IR、1H NMR和元素分析确认。初步的生物活性试验结果表明, 3 号化合物在0.1 kg/hm2 时对马唐Digitaria sanguinalis的抑制率为64.5%, 6 号化合物在0.2 mg/L时对豆蚜Aphis craccivora Koch的致死率为67％。

Abstract: Ten substituted phenyl urea derivatives containing 2-(nitroimino )imidazolidine were synthesized from substituted phenyl isocyanate. Their structures were confirmed by IR, 1H NMR and elemental analysis. Preliminary bioassay showed that the inhibitory rate of compound 3 to Digitaria sanguinalis reached 64.5% at 0.1 kg/hm2, and lethal of compound 6 to Aphis craccivora Koch reached 67%.