(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