(2S,4S,5R,6R)-6-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-3,3-dimethyl-4,7-dioxo-4λ4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid 2,2,2-trichloro-ethyl ester 以
various solvent(s) 为溶剂,
反应 2.0h,
以61.2%的产率得到(6R,7R)-7-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-3-methyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 2,2,2-trichloro-ethyl ester