tert-butyl 4-(3-fluoro-4-formyl-5-hydroxyphenyl)piperazine-1-carboxylate 、
ethyl 2-(6-methylimidazo[1,2-a]pyridin-2-yl)acetate 、
N,N-二异丙基乙胺 、
溶剂黄146 以
乙醇 为溶剂,
以gave tert-butyl 4-(5-fluoro-3-(6-methylimidazo[1,2-a]pyridin-2-yl)-2-oxo-2H-chromen-7-yl)piperazine-1-carboxylate的产率得到tert-butyl 4-(5-fluoro-3-(6-methylimidazo[1,2-a]pyridin-2-yl)-2-oxo-2H-chromen-7-yl)piperazine-1-carboxylate