2-(cyclopropylmethoxy)ethylamine 、 2-{[1-(tert-butoxycarbonyl)piperidin-4-yl]methyl}-4-(difluoromethoxy)-2H-indazol-5-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
二甲基亚砜 为溶剂,
反应 1.0h,
以453 mg的产率得到tert-butyl 4-{[5-{N-[2-(cyclopropylmethoxy)ethyl]carbamoyl}-4-(difluoromethoxy)-2H-indazol-2-yl]methyl}piperidin-1-carboxylate