(2R,6R)-3-(Hydroxyimino-methyl)-8-oxo-7-[1-pyridin-2-yl-meth-(Z)-ylidene]-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid benzhydryl ester 在
氯化亚砜 作用下,
以
氯仿 为溶剂,
反应 0.5h,
生成
(2R,6R)-3-Cyano-8-oxo-7-[1-pyridin-2-yl-meth-(Z)-ylidene]-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid benzhydryl ester