(1Z)-1-[[4-(dimethylamino)phenyl]-phenylmethylidene]-5-oxo-4-phenyl-1,2,4-triazol-1-ium-3-olate 、
丁炔二酸二甲酯 以
苯 为溶剂,
反应 72.0h,
以50%的产率得到7-(4-Dimethylamino-phenyl)-1,3-dioxo-2,7-diphenyl-2,3-dihydro-1H,7H-pyrazolo[1,2-a][1,2,4]triazole-5,6-dicarboxylic acid dimethyl ester