Diethyl 2-<<5-chloro-2-(2',4'-dichlorophenoxy)phenyl>azo>-2-(2-chloro-N-phenylacetamido)malonate 在
sodium ethanolate 作用下,
以
乙醇 为溶剂,
以91%的产率得到Ethyl 1-<5-Chloro-2-(2',4'-dichlorophenoxy)phenyl>-1,4,5,6-tetrahydro-5-oxo-4-phenyl-1,2,4-triazine-3-carboxylate