Carboxylic acids activated with Mukaiyama's reagent (2-chloro-N-methylpyridinium iodide) reacted with imines to produce β-lactams in good yields and with high stereoselectivity. The utilization of three equivalents of tripropylamine as the base was necessary to obtain high chemical yield and good stereoselectivity.
用Mukaiyama试剂(2-
氯-N-
甲基吡啶碘鎓
碘化物)活化的
羧酸与
亚胺反应,以高收率和高立体选择性产生β-内酰胺。为了获得高
化学产率和良好的立体选择性,必须使用三当量的
三丙胺作为碱。