A diastereoselectivepalladiumcatalyzedcarbenylativeamination of ortho‐vinylaniline with 3‐diazoindolines‐2‐one have been accomplished for the synthesis of various tetrasubstituted indoline fused spirooxindole with good yields and diastereoselectivity. Notable features of the method include construction of two contiguous tetrasubstituted carbon stereocenters via C−N and C−C bond formation in single
Synthesis of <i>N</i>-Arylindoles from 2-Alkenylanilines and Diazonaphthalen-2(1<i>H</i>)-ones through Simultaneous Indole Construction and Aryl Introduction
作者:Caiyun Yu、Yuanshuang Xu、Xinying Zhang、Xuesen Fan
DOI:10.1021/acs.joc.2c00628
日期:2022.6.3
In this paper, an efficient synthesis of N-arylindoles through the cascade reaction of 2-alkenylanilines with diazonaphthalen-2(1H)-ones is presented. Mechanistically, this reaction involves the generation of a Ru–carbene complex from diazonaphthalen-2(1H)-one, followed by carbene N–H bond insertion with 2-alkenylaniline, intramolecular cyclization, and oxidative aromatization. In this reaction, the