Palladium-catalyzed three-component cascade arylthiolation with aryldiazonium salts as <i>S</i>-arylation sources
作者:Jianxiao Li、Hao Tang、Zidong Lin、Shaorong Yang、Wanqing Wu、Huanfeng Jiang
DOI:10.1039/d0ob00828a
日期:——
A novel and efficient palladium-catalyzed three-component cascade cyclization/arylthiolation has been developed for the assembly of diverse 3-sulfenylindole and 3-sulfenylbenzofuran derivatives from 2-alkynylamines and 2-alkynylphenols, aryldiazonium salts, and Na2S2O3 under aerobic conditions with PEG-200 as an environmentally benign medium. The current study features exceptional functional group
一种新颖的和有效的钯催化的三组分级联环化/ arylthiolation已经开发了用于装配多样3- sulfenylindole并从2-炔基胺和2- alkynylphenols,芳基重氮盐,和Na 3-sulfenylbenzofuran衍生物的2小号2 ö 3下PEG-200作为环境友好介质的有氧条件。当前的研究具有卓越的官能团耐受性,而无需额外的配体,氧化剂或银盐,并且环保型反应条件温和。离子液体[C 2 OHmim] Cl作为环保添加剂在该协议中起着至关重要的作用。值得注意的是,该方法代表了使用芳基重氮盐作为直接S的第一个例子这种化学转化中的芳基化来源。