(E)-ethyl 4-(2-(dimethylamino)vinyl)-2-(methylthio)-6-(3-(trifluoromethyl)phenylamino)pyrimidine-5-carboxylate 、
ammonium hydroxide 在
2-(methylthio)-4-(3-(trifluoromethyl)phenylamino)pyrido[4,3-d]pyrimidin-5(6H)-one 作用下,
以yield brown solids, 2-(methylthio)-4-(3-(trifluoro methyl)phenylamino)pyrido[4,3-d]pyrimidin-5(6H)-one (912 mg)的产率得到2-(methylthio)-4-(3-(trifluoromethyl)phenylamino)pyrido[4,3-d]pyrimidin-5(6H)-one