作者:Xuan-Huong Ho、Sun-il Mho、Hyuk Kang、Hye-Young Jang
DOI:10.1002/ejoc.201000453
日期:——
The asymmetric organocatalyzed α-alkylation of aldehydes via a cationic radical enamine intermediate was performed under environmentally benign electro-oxidation conditions without the use of chemical oxidants. To promote the desired α-alkylation reaction of aldehydes, various aldehydes with xanthene or cycloheptatriene groups were exposed to electro-organocatalytic conditions to afford optically active
通过阳离子自由基烯胺中间体对醛进行不对称有机催化的 α-烷基化反应是在环境友好的电氧化条件下进行的,不使用化学氧化剂。为了促进醛的理想 α-烷基化反应,将具有呫吨或环庚三烯基团的各种醛暴露于有机电催化条件下,以良好的收率提供光学活性的 α-取代醛(α-烷基化醛)。基于循环伏安法 (CV) 结果、DFT 计算和控制实验,提出了涉及阳离子自由基烯胺的反应机制。