3-formyl-2,4-dimethyl-1-phenyl-3-pyrazolin-5-one 、
7-(4-chlorophenyl)-2-hydrazino-3H,4H-pyrido[2,3-d]pyrimidin-4-one 在
溴 、
sodium acetate 、
溶剂黄146 作用下,
以85 %的产率得到8-(4-chlorophenyl)-3-(2,4-dimethyl-5-oxo-1-phenyl-2,5-dihydro-1H-pyrazol-3-yl)-6-phenylpyrido[2,3-d][1,2,4]triazolo[4,3-a]pyrimidin-5(1H)-one