Methyl 2-[2,5-dichloro-4-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]sulfonylphenyl]sulfanylacetate 在
sodium hydroxide 、
N,N'-二环己基碳二亚胺 作用下,
以
四氢呋喃 为溶剂,
反应 4.75h,
生成 (6R,7R)-7-[2-(4-tert-Butoxycarbonylmethanesulfonyl-2,5-dichloro-phenylsulfanyl)-acetylamino]-3-chloromethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester