(3S,4S)-4-氨基-3-氟哌啶-1-甲酸叔丁酯 、
1-(4-fluoro-2-methylbenzyl)cyclopropane-1-carboxylic acid 在
三乙胺 、 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-二甲基乙酰胺 为溶剂,
生成 tert-butyl (3S,4S)-3-fluoro-4-(1-(4-fluoro-2-methylbenzyl)cyclopropane-1-carboxamido)piperidine-1-carboxylate