2-{[1-(tert-butoxycarbonyl)azetidin-3-yl]methyl}-6-methyl-2H-indazol-5-carboxylic acid 、 2-[(trifluoromethyl)sulphanyl]ethylamine 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998 mg的产率得到tert-butyl 3-{[6-methyl-5-(N-{2-[(trifluoromethyl)sulphanyl]ethyl}carbamoyl)-2H-indazol-2-yl]methyl}azetidin-1-carboxylate