DMSO/SOCl<sub>2</sub>-Enabled Synthesis of 3-Chloroindoles via Desulfonylative Chlorocyclization of N,N-Disubstituted 2-Alkynylanilines
作者:Xuemin Li、Yifu Cheng、Yue Li、Fengxia Sun、Xiangyu Zhan、Zhifang Yang、Jingyue Yang、Yunfei Du
DOI:10.1021/acs.joc.3c02471
日期:2024.2.2
intramolecular cyclization/chlorination of N,N-disubstituted 2-alkynylanilines, leading to the synthesis of a series of 3-chloroindoles with moderate to good yields. Differing from the previously reported interrupted Pummerer reaction featuring the introduction of SMe moiety, the current approach adopted an alternative pathway that realized the incorporation of chlorine atom to the indole skeleton via
DMSO/SOCl 2体系的应用实现了N,N-二取代2-炔基苯胺的分子内环化/氯化,从而合成了一系列具有中等至良好收率的3-氯吲哚。与之前报道的引入SMe部分的中断Pummerer反应不同,目前的方法采用了另一种途径,通过脱磺酰氯环化过程实现氯原子与吲哚骨架的结合。