(1S,4R,5S)-6-(t-Butyl-dimethylsilanyl)-7-oxo-4-trifluoromethanesulphonyloxy-2,6-diazabicyclo[3.2.0]heptane-2-carboxylic acid benzyl ester 在
四丁基氯化铵 作用下,
以
N-甲基乙酰胺 为溶剂,
以76 mg (27%)的产率得到(1S,4R,5S)-4-chloro-7-oxo-2,6-diazabicyclo[3.2.0]heptane-2-carboxylic acid benzyl ester