(3E)-dimethyl 2-[(4-fluorophenylamino)methylene]-3-(1-methyl-2,5-dioxoimidazolidin-4-ylidene)succinate 在
potassium hydroxide 作用下,
以
乙醇 为溶剂,
反应 2.0h,
以94%的产率得到potassium (E)-4-[1-(4-fluorophenyl)-4-(methoxycarbonyl)-2-oxo-1H-pyrrol-3(2H)-ylidene]-1-methyl-5-oxo-4,5-dihydro-1H-imidazol-2-olate