(2R,4R)-4-methanesulfonyloxy-2-[4-(3-oxo-morpholin-4-yl)-phenylcarbamoyl]-pyrrolidine-1-carboxylic acid tert-butyl ester 在
sodium azide 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 12.0h,
以100%的产率得到(2R,4R)-4-azido-2-[4-(3-oxo-morpholin-4-yl)-phenylcarbamoyl]-pyrrolidine-1-carboxylic acid tert-butyl ester