Rhodium(II)- or Copper(I)-Catalyzed Formal Intramolecular Carbene Insertion into Vinylic C(sp<sup>2</sup>
)−H Bonds: Access to Substituted 1<i>H</i>
-Indenes
作者:Qi Zhou、Shichao Li、Yan Zhang、Jianbo Wang
DOI:10.1002/anie.201709375
日期:2017.12.11
A rhodium(II)‐ or copper(I)‐catalyzed formal intramolecular carbene insertion into vinylic C(sp2)−H bonds is reported herein. This method provides straightforward access to 1H‐indenes with high efficiency and excellent functional‐group compatibility. Mechanistically, the reaction is proposed to involve the following sequence: metal carbene formation, intramolecular nucleophilic addition of the double
本文报道了铑(II)或铜(I)催化的正式分子内卡宾插入乙烯基C(sp 2)-H键。该方法可高效,出色的官能团相容性,直接访问1 H茚。从机理上讲,该反应涉及以下顺序:金属卡宾的形成,分子内亲核性双键向缺电子卡宾碳原子的加成,脱芳香化作用以及最后的1,5-H位移。