Visible-Light-Driven Radical Multicomponent Reaction of 2-Vinylanilines, Sulfonyl Chlorides, and Sulfur Ylides for Synthesis of Indolines
作者:Mukund M. D. Pramanik、Fan Yuan、Dong-Mei Yan、Wen-Jing Xiao、Jia-Rong Chen
DOI:10.1021/acs.orglett.0c00602
日期:2020.4.3
A visible-light-driven photoredox-catalyzed multicomponent reaction of 2-vinylanilines, sulfonyl chlorides, and sulfur ylides is described. This protocol features redox-neutral mild conditions, a broad substrate scope, and good functional group tolerance, providing access to various sulfonated 2,3-disubstituted indolines. The product can be transformed to a diverse range of functionalized indoles by
描述了可见光驱动的2-乙烯基苯胺,磺酰氯和硫酰化物的光氧化还原催化的多组分反应。该协议具有氧化还原中性温和条件,广泛的底物范围和良好的官能团耐受性,可提供各种磺化的2,3-二取代的二氢吲哚。可通过选择性芳构化/亲核取代过程将产物转化为多种功能化的吲哚。机理的研究表明,这两个磺酰氯和硫叶立德作为自由基源,并且反应通过顺序基加/添加/热小号Ñ 2-替代过程。