4、reaction of 3,4-dichloroaninine and 4-chlorophenylisocyanate to yield Triclocarban(见第三题)(5分) 2.Refer to the reaction below to answer the following questions: 1)Draw arrows on the structures provided below which show electron flow in the complete stepwise mechanism
5、for the reaction above(7分)2) This reaction is an example of: (1分) A. a Curtius rearrangement; C. a Hofmann elimination reaction B. a Gabriel synthesis; D. a Hofmann rearrangement; 五.按要求推测化合物的结构,共16分1.分子式为C5H13N的化合物A与2分子的CH3I反应,接接着用湿的Ag2O加热处理,生成乙烯和一个叔胺B,B进一步用CH3