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。