4-甲氧基吡啶-N-氧化物 、
(6R,7R)-7-[1-Chloro-eth-(Z)-ylideneamino]-3-methyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid methyl ester 以
1,2-二氯乙烷 为溶剂,
反应 30.0h,
以73%的产率得到4-Methoxy-1-[N-((6R,7R)-2-methoxycarbonyl-3-methyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-en-7-yl)-acetimidoyloxy]-pyridinium; chloride