A [4+1] Cyclative Capture Approach to 3
<i>H</i>
‐Indole‐
<i>N</i>
‐oxides at Room Temperature by Rhodium(III)‐Catalyzed CH Activation
作者:Yaxi Yang、Xuan Wang、Yuanchao Li、Bing Zhou
DOI:10.1002/anie.201508702
日期:2015.12.14
The rhodium(III)‐catalyzed [3+2] CH cyclization of aniline derivatives and internal alkynes represents a useful contribution to straightforward synthesis of indoles. However, there is no report on the more challenging synthesis of pharmaceutically important N‐hydroxyindoles and 3H‐indole‐N‐oxides. Reported herein is the first rhodium(III)‐catalyzed [4+1] CH oxidative cyclization of nitrones with
铑(III)催化苯胺衍生物和内部炔烃的[3 + 2] CH环化反应对吲哚的直接合成做出了有益的贡献。但是,尚无关于具有重要药学意义的N-羟基吲哚和3 H-吲哚-N-氧化物的合成方法更具挑战性的报道。本文报道的是第一铑(III)催化的[4 + 1]Ç ħ氧化与重氮化合物访问3硝酮的环化ħ -吲哚Ñ -oxides。更重要的是,该反应在室温下进行,并已扩展到N-羟基吲哚和N-羟基二氢吲哚的合成。