N-Polyheterocycles are rapidly accessed by N-heterocyclic carbene (NHC) catalysis through regioselective sequential radical addition/cyclization in the absence of any metals or oxidants. The transformation occurs under mild conditions and enjoys a wide substrate scope with excellent functional group compatibility. Furthermore, a gram-scale synthesis is also conducted. Preliminary mechanistic studies reveal the potential
在不存在任何
金属或氧化剂的情况下,通过N-杂环卡宾 (NHC) 催化通过区域选择性顺序自由基加成/环化快速获得N-多杂环。转化条件温和,底物范围广,官能团相容性好。此外,还进行了克级合成。初步机理研究揭示了 NHC 自由基阳离子中间体的潜在参与。