6,6-difluoro-1,4-oxazepane hydrochloride 、 lithium 3-(6,8-difluoroimidazo[1,2-a]pyridin-3-yl)-1-(2,2,2-trifluoroethyl)pyrazolo[4,3-c]pyridine-6-carboxylate 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基乙酰胺 为溶剂,
反应 0.5h,
以54%的产率得到[3-(6,8-difluoroimidazo[1,2-a]pyridin-3-yl)-1-(2,2,2-trifluoroethyl)-1H-pyrazolo[4,3-c]pyridin-6-yl]-(6,6-difluoro-1,4-oxazepan-4-yl)methanone