3-乙氧亚甲基-2,4-戊二酮 、
草灭畏 在
乙腈 作用下,
以
乙醚 为溶剂,
反应 5.0h,
以12 g (76% of theory) of 3-[2,2-bis-(methylcarbonyl)-vinylamino]-2,5-dichlorobenzoic acid were obtained in the form of colourless crystals of melting point 244°-246° C.的产率得到3-[2,2-bis-(methylcarbonyl)-vinylamino]-2,5-dichlorobenzoic acid