2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]butanoic acid 、
2-氨基咪唑并[1,2-A]吡啶-6-甲酸甲酯 在
crude product 、
acetonitrile-water 作用下,
生成 methyl 2-({2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]butanoyl}amino)imidazo[1,2-a]pyridine-6-carboxylate