Synthesis of Indoles by Conjugate Addition and Ligand-Free Copper-Catalyzed Intramolecular Arylation of Activated Acetylenes with o-Haloanilines
作者:Detian Gao、Masood Parvez、Thomas G. Back
DOI:10.1002/chem.201002628
日期:2010.12.27
and efficient new synthesis of variously functionalized and substituted indoles was achieved by the addition and copper‐catalyzed coupling of N‐formyl‐o‐haloanilines with acetylenic sulfones, esters and ketones (see scheme; EWG=electron‐withdrawing group). The reaction employs copper(II) acetate under ligand‐free conditions without the need for exclusion of air and moisture.
空气和
水欢迎-
配体无需申请!通过将N-甲酰基-邻-卤代
苯胺与炔属砜,酯和酮进行加成和
铜催化偶合,可以简便,高效地合成各种官能化和取代的
吲哚(参见方案; EWG =吸电子基团)。该反应在无
配体条件下使用
乙酸铜(II),而无需排除空气和湿气。