Facile synthesis of 2-substituted benzo[<i>b</i>]furans and indoles by copper-catalyzed intramolecular cyclization of 2-alkynyl phenols and tosylanilines
作者:Zhouting Rong、Kexin Gao、Lei Zhou、Jianyuan Lin、Guoying Qian
DOI:10.1039/c9ra01260e
日期:——
CuCl and Cs2CO3 was employed to synthesize a variety of 2-substituted benzo[b]furans and indoles by an intramolecular cyclization of 2-alkynyl phenols and tosylanilines. This protocol features mild conditions, high yields and broad substrate scope, which makes it a practical method for the synthesis of 2-substituted benzo[b]furans and indoles.
催化量的 CuCl 和 Cs 2 CO 3用于通过 2-炔基酚和甲苯磺酰苯胺的分子内环化合成各种 2-取代的苯并[ b ]呋喃和吲哚。该方案条件温和、产率高、底物范围广,是合成2-取代苯并[ b ]呋喃和吲哚的实用方法。