作者:David Tejedor、Raquel Diana-Rivero、Fernando García-Tellado
DOI:10.3390/molecules25235595
日期:——
A consecutive 2-step synthesis of N-unprotected polysubstituted indoles bearing an electron-withdrawing group at the C-3 position from readily available nitroarenes is reported. The protocol is based on the [3,3]-sigmatropic rearrangement of N-oxyenamines generated by the DABCO-catalyzed reaction of N-arylhydroxylamines and conjugated terminal alkynes, and delivers indoles endowed with a wide array
报道了从容易获得的硝基芳烃在 C-3 位置带有吸电子基团的 N-未保护多取代吲哚的连续 2 步合成。该协议基于由 N-芳基羟胺和共轭末端炔烃的 DABCO 催化反应产生的 N-oxyenamines 的 [3,3]-sigmatropic 重排,并提供具有多种取代模式和拓扑结构的吲哚。