描述:
(2R,6S,7S)-2-Allyl-7-tert-butoxycarbonylamino-3-methylene-8-oxo-5-thia-1-aza-bicyclo[4.2.0]octane-2-carboxylic acid benzhydryl ester 以
xylene 为溶剂,
反应 24.0h,
以79%的产率得到(6R,7R)-3-But-3-enyl-7-tert-butoxycarbonylamino-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester