The polarity reversible nature of azomethine imines as the crucial transformation enables the tandem Michael addition/imine isomerization/[3+2] cycloaddition to proceed under mild, transition-metal-free conditions to form cyclohepta[b]pyrroles in a single operation starting from readily available acyclic precursors with a broad substrate scope.
偶氮甲
亚胺的极性可逆性质是至关重要的转化,使得串联的迈克尔加成/
亚胺异构化/ [3 + 2]环加成反应可在温和,无过渡
金属的条件下进行,从一开始就可在一次操作中形成环庚[b]
吡咯易于获得的无环前体,具有广泛的底物范围。