6-methyl-2-trifluoromethyl-3-fluoroimidazo[1,2-a]pyridine 、
2-ethyl-8-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole 在
对苯二酚 、 potassium hydroxide 作用下,
以
二甲基亚砜 为溶剂,
反应 6.0h,
以73%的产率得到2-ethyl-8-methyl-5-(6-methyl-2-(trifluoromethyl)imidazo[1,2-a]pyridin-3-yl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole