3-乙氧亚甲基-2,4-戊二酮 、
2,5,6-Trichlor-3-amino-benzoesaeure 以
甲苯 为溶剂,
以52 g (74% of theory) of 3-[2,2-bis-(methylcarbonyl)-vinylamino]-2,5,6-trichlorobenzoic acid were obtained in the form of colourless crystals of melting point 242°-244° C.的产率得到3-[2,2-bis-(methylcarbonyl)-vinylamino]-2,5,6-trichlorobenzoic acid