2-(difluoromethyl)-imidazolo[1,2-A]pyridine-3-carboxylic acid 、 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以25 %的产率得到2-(difluoromethyl)-N-[[4-[7-(trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyridin-2-yl]phenyl]methyl]imidazo[1,2-a]pyridine-3-carboxamide