allyl (4R,5S,6S)-3-[(2R,4S)-1-allyloxycarbonyl-2-[2-(1-methylimidazol-2-yl)-ethyl)-pyrrolidin-4-yl]thio-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo [3.2.0]hept-2-ene-2-carboxylate 、
碘甲烷 以
丙酮 为溶剂,
反应 17.0h,
以to give allyl (4R,5S,6S)-3[(2R,4S)-1-allyloxycarbonyl-2-{2-(1,3-dimethyl-2-imidazolio)ethyl}pyrrolidin-4-yl]thio-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate iodide (3.68 g)的产率得到prop-2-enyl (4R,5S,6S)-3-[(3S,5R)-5-[2-(1,3-dimethylimidazol-1-ium-2-yl)ethyl]-1-prop-2-enoxycarbonylpyrrolidin-3-yl]sulfanyl-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate;iodide