用苯乙烯基异氰酸脂与脂肪胺反应合成了6个新的N-苯乙烯基脲化合物,产品收率多在90％以上。通过α-甲基苄基和对氯α-甲基苄基异硫氰酸脂与脂肪胺反应制备了12个新的N-苄基衍生物。产品收率多在80％以上。初步探讨了“一步法”,即苄胺或取代苄胺与脂肪胺。二硫化碳直接作用合成相应的N-苄基硫脲衍生物的可能性。对所合成的新化合物进行了初步生测,结果表明它们都有不同程度的除草活性。其中有几个化合物除草活性高于除草剂1号 Six novel N-styrylurea compounds were synthesized by the reaction of styryl isocyanate with aliphatic amines. The yield of the product was more than 90%. Twelve new N-benzyl derivatives were prepared by the reaction of α-methylbenzyl and p-chloro-α-methylbenzyl isothiocyanate with aliphatic amines. Product yield more than 80%. Preliminary discussion of the “one-step” that benzylamine or substituted benzylamine and fatty amines. The direct effect of carbon disulfide on the synthesis of the corresponding N-benzyl thiourea derivatives possibility. The new compounds synthesized for preliminary bioassay, the results show that they all have varying degrees of herbicidal activity. Among them, the herbicidal activity of several compounds was higher than that of herbicide No.1