吗啉 、
(5S,6R,7R)-3-Acetoxymethyl-4-[1-chloro-meth-(Z)-ylidene]-5,8-dioxo-7-(2-thiophen-2-yl-acetylamino)-5λ4-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 2,2,2-trichloro-ethyl ester 以
二氯甲烷 为溶剂,
以57%的产率得到(5S,6R,7R)-3-Acetoxymethyl-4-[1-morpholin-4-yl-meth-(Z)-ylidene]-5,8-dioxo-7-(2-thiophen-2-yl-acetylamino)-5λ
4-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 2,2,2-trichloro-ethyl ester