ethyl-2,6-difluoro benzimidate 、 3-chloro-5-trifluoromethyl-2-(2,6-dichloro-4-isocyanatophenoxy)pyridine 在
ethyl N-[4-(3-chloro-5-trifluoromethylpyrid-2-yloxy)-3,5-dichlorophenylcarbamoyl]-2,6-difluorobenzimidate 作用下,
以to give ethyl N-[4-(3-chloro-5-trifluoromethylpyrid-2-yloxy)-3,5-dichlorophenylcarbamoyl]-2,6-difluorobenzimidate (Compound IV)的产率得到ethyl N-[4-(3-chloro-5-trifluoromethylpyrid-2-yloxy)-3,5-dichlorophenylcarbamoyl]-2,6-difluorobenzimidate