Cu/PCy
<sub>3</sub>
‐Catalyzed Formal Carbene Insertion into Electron‐Deficient C−H Bonds
作者:Yuan‐Yuan Ren、Hong‐Xiang Mao、Meng‐Yang Hu、Shou‐Fei Zhu、Qi‐Lin Zhou
DOI:10.1002/cctc.202000684
日期:2020.9.4
A carbene insertion into electron‐deficient C−H bonds of 1,3‐diesters, β‐ketoesters, β‐ketonitriles, and malononitriles was realized by using CuCN/PCy3 as the catalyst. The reaction provides a straightforward approach to the synthetically important multi‐substituted succinic acid derivatives. A plausible reaction mechanism with cyclopropanation/ring opening as key steps was proposed based on control
通过使用CuCN / PCy 3作为催化剂,将卡宾插入到1,3-二酯,β-酮酸酯,β-酮腈和丙二腈的电子不足的CH键中。该反应为合成上重要的多取代琥珀酸衍生物提供了一种直接方法。在控制实验的基础上,提出了以环丙烷化/开环为关键步骤的合理反应机理。