Synthesis of N-Alkoxyindol-2-ones by Copper-Catalyzed Intramolecular N-Arylation of Hydroxamates
作者:Martins Katkevics、Tatyana Kukosha、Nadezhda Trufilkina
DOI:10.1055/s-0030-1260328
日期:2011.10
The first example of copper-catalyzed intramolecular N-arylation of hydroxamic acid derivatives is presented. Based on this transformation a new method for the synthesis of N-alkoxyindol-2-ones from 2-(2-bromoaryl)acetylhydroxamates has been developed. The reaction conditions tolerate standard hydroxyl protecting groups on the hydroxylamine moiety and are also applicable for the synthesis of six-membered N-alkoxybenzolactams.
首次展示了铜催化的羟胺衍生物的分子内部N-芳基化反应。基于这一转化,开发了一种从2-(2-溴芳基)乙酰羟胺酯合成N-烷氧基吲哚-2-酮的新方法。反应条件能够容忍羟胺部分的标准羟基保护基团,且同样适用于合成六元N-烷氧基苯内酰胺。