6-bromo-2-(7-methylimidazo[1,2-a]pyridin-2-yl)-4H-chromen-4-one 、
N-Boc-哌嗪 、
2-双环己基膦-2',6'-二甲氧基联苯 、
Dicaesio carbonate 在
Pd(dibenzylideneacetone)2 作用下,
以
甲苯 为溶剂,
以gave tert-butyl 4-(2-(7-methylimidazo[1,2-a]pyridin-2-yl)-4-oxo-4H-chromen-6-yl)piperazine-1-carboxylate (56.4 mg, 77%)的产率得到tert-butyl 4-(2-(7-methylimidazo[1,2-a]pyridin-2-yl)-4-oxo-4H-chromen-6-yl)piperazine-1-carboxylate