(S)-4-[(R)-((2R,3R)-1-Benzyl-3-hydroxy-4-oxo-azetidin-2-yl)-methoxy-methyl]-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester 在
phosphorus pentoxide 作用下,
以
二甲基亚砜 为溶剂,
反应 16.0h,
生成 (S)-4-[(R)-((S)-1-Benzyl-3,4-dioxo-azetidin-2-yl)-methoxy-methyl]-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester