dimethyl (1S,2R,3S)-1-azido-4-[(p-bromobenzoyl)oxy]-2,3-(isopropylidenedioxy)butylphosphonate 在
lithium bromide 作用下,
以
乙腈 为溶剂,
反应 2.0h,
以83%的产率得到(1S,2R,3S)-1-azido-4-[(p-bromobenzoyl)oxy]-2,3-(isopropylidenedioxy)butylphosphonic acid mono-methyl ester