(R)-2,5-Bis-methanesulfonyloxy-pentanoic acid methyl ester 、 (S)-3-Amino-1-benzyloxy-azetidin-2-one; compound with trifluoro-acetic acid 在
N,N-二异丙基乙胺 作用下,
以
氯仿 为溶剂,
生成 N-((S)-1-Benzyloxy-2-oxo-azetidin-3-yl)-methanesulfonamide 、 (R)-5-((S)-1-Benzyloxy-2-oxo-azetidin-3-ylamino)-2-methanesulfonyloxy-pentanoic acid methyl ester