三氟甲磺酸酐 、
(4R,5S)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-5-hydroxymethyl-2,2-dimethyl-oxazolidine-3-carboxylic acid 2,2,2-trichloro-ethyl ester 在
三乙胺 作用下,
以
二氯甲烷 为溶剂,
以94%的产率得到(4R,5S)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl-5-trifluoromethanesulfonyloxymethyl-oxazolidine-3-carboxylic acid 2,2,2-trichloro-ethyl ester