Four N′-tert-butyl-N-substituted chrysanthemoyl urea derivatives have been synthesized through "substructure link way": substituted chrysanthemoyl chlorides were directly reacted with tert-butyl urea at abo...Four N′-tert-butyl-N-substituted chrysanthemoyl urea derivatives have been synthesized through "substructure link way": substituted chrysanthemoyl chlorides were directly reacted with tert-butyl urea at about 40 ℃ in the presence of acetonitrile. The structures of the target compounds(2a~2d) were characte- rized by 1H NMR, IR and elemental analysis. The preliminary bioactivity tests showed that compound 2d was active against Cucumber, Chenopodium, Radish and Sorgham. The inhibitory percentage to the root was over 70% and it was also active against the growth of stalks. Compound 2b showed a considerable insecticidal activity.展开更多
采用活性基团拼接法,将叔丁基引入到含有吡啶环的酰基(硫)脲结构中,设计合成了4个未见文献报道的N′ 叔丁基 N β(γ) 吡啶甲酰基脲及N′ 叔丁胺基羰基 N β(γ) 吡啶甲酰基硫脲类化合物,其结构经元素分析,IR和1HNMR得到确证.初步的生...采用活性基团拼接法,将叔丁基引入到含有吡啶环的酰基(硫)脲结构中,设计合成了4个未见文献报道的N′ 叔丁基 N β(γ) 吡啶甲酰基脲及N′ 叔丁胺基羰基 N β(γ) 吡啶甲酰基硫脲类化合物,其结构经元素分析,IR和1HNMR得到确证.初步的生物活性测试结果表明部分化合物具有较好的除草活性.展开更多
文摘Four N′-tert-butyl-N-substituted chrysanthemoyl urea derivatives have been synthesized through "substructure link way": substituted chrysanthemoyl chlorides were directly reacted with tert-butyl urea at about 40 ℃ in the presence of acetonitrile. The structures of the target compounds(2a~2d) were characte- rized by 1H NMR, IR and elemental analysis. The preliminary bioactivity tests showed that compound 2d was active against Cucumber, Chenopodium, Radish and Sorgham. The inhibitory percentage to the root was over 70% and it was also active against the growth of stalks. Compound 2b showed a considerable insecticidal activity.