An electrochemical synthesis of ß-lactams from readily available substituted haloacetamides is reported. The formation of an anionic site, which promotes cyclization by intramolecular nucleophilic substitution, occurs either directly on the substrate molecule by electrochemical reduction of a carbon-halogen bond, or following induction on the substrate itself by a base, also generated by electroreduction of a suitable probase. The procedure is characterized by high yields and versatility, and its compatibility with sensitive groups present in the substrate molecules.
报道了一种从易得的取代卤乙酰胺合成β-内酯的电
化学合成方法。阴离子位点的形成,促进了通过分子内亲核取代反应的环化,发生在基质分子上的碳-卤键的电
化学还原,或者在基质本身上通过碱的诱导,后者也是通过适当的前碱的电还原生成的。该方法具有高产率和多样性,且与基质分子中存在的敏感基团相兼容。