【摘要】 ZnCl₂对于酰氯直接酰化N-苯基脲的反应具有显著的催化作用。在ZnCl₂存在下,酰基化产物N-酰基-N′-苯基脲衍生物的产率,与无催化剂的对照实验相比提高17—45％。多数酰氯在ZnCl₂存在下生成N-酰基N′-苯基脲及其衍生物的产率可以达到70—80％。更多还原

【Abstract】 In this paper, the zinc chloride, as an effective catalyst for direct acylation of the N-phenylurea with acyl and aroyl chlorides, was studied. It was shown that the yields of the acylation reactions were 6—48％ higher in the presence of ZnCl₂ than those in the absence of ZnCl₂. The yields of the acylation reactions with most acyl chlorides used in the presence of ZnCl₂ could reach 70—80％.更多还原