Visible-Light-Mediated Decarboxylation/Oxidative Amidation of α-Keto Acids with Amines under Mild Reaction Conditions Using O<sub>2</sub>
作者:Jie Liu、Qiang Liu、Hong Yi、Chu Qin、Ruopeng Bai、Xiaotian Qi、Yu Lan、Aiwen Lei
DOI:10.1002/anie.201308614
日期:2014.1.7
visible‐light photoredox catalysis and radical reactions. A novel, simple, and efficient radical oxidative decarboxylative coupling with the assistant of the photocatalyst [Ru(phen)3]Cl2 is described. Various functional groups are well‐tolerated in this reaction and thus provides a new approach to developing advanced methods for aerobic oxidative decarboxylation. The preliminary mechanistic studies revealed
光化学开创了化学发展的新纪元,光氧化还原催化已经成为一个热门话题,特别是在过去的五年中,结合了可见光光氧化还原催化和自由基反应。描述了一种新颖,简单,有效的与光催化剂[Ru(phen)3 ] Cl 2辅助的自由基氧化脱羧偶联。该反应中的各种官能团均具有良好的耐受性,因此为开发高级方法进行好氧氧化脱羧提供了一种新方法。初步的机理研究表明:1)[Ru(phen)3 ] 2+ *与苯胺之间的SET过程起重要作用;2)2激活可能是决定速率的步骤;3)脱羧步骤是不可逆且快速的过程。