(1S,2R,4S)-4-(dibenzylamino)-2-methylcyclopentanecarboxylic acid 、
dimethylsulfoxonium methylide 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
四氢呋喃 为溶剂,
反应 15.0h,
以90%的产率得到(1S,2R,4S)-2-(2-methyl-4-(dibenzylamino)cyclopentyl)-dimethylsulfoxonium-2-oxo-ethylide