2-{[1-(tert-butoxycarbonyl)azetidin-3-yl]methyl}-4-methyl-2H-indazol-5-carboxylic acid 、
2-甲氧基丙胺盐酸盐 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331 mg的产率得到(±)-tert-butyl 3-({5-[N-(2-methoxypropyl)carbamoyl]-4-methyl-2H-indazol-2-yl}methyl)azetidin-1-carboxylate