(E)-N'-[2-(4-chloro-3-nitrophenyl)-7-(4-bromophenyl)-4-cyano-3-dimethylamino-2H-pyrazolo[3,4-c]pyridin-5-yl]-N,N-dimethylformamidine 在
ammonium acetate 、
溶剂黄146 作用下,
反应 3.0h,
以71%的产率得到4-(4-bromophenyl)-2-(4-chloro-3-nitrophenyl)-1-dimethylamino-2H-pyrazolo[4',3':4,5]-pyrido[2,3-d]pyrimidine-9-amine