Reductive Amination by Photoredox Catalysis and Polarity-Matched Hydrogen Atom Transfer
作者:Xingwei Guo、Oliver S. Wenger
DOI:10.1002/anie.201711467
日期:2018.2.23
compounds with amines by photoredox catalysis proceeds in good to excellent yields and with broad substrate scope and good functional group tolerance. The three key features of this work are 1) the rapid interception of electron‐rich α‐aminoalkyl radical intermediates by polarity‐matched HAT in a photoredox reaction, 2) the method of reductive amination by photoredox catalysis itself, and 3) the application
Ru II的激发抗坏血酸存在下的光敏剂可将亚胺离子还原为富电子的α-氨基烷基自由基中间体,这些中间体通过硫醇介导的氢原子转移(HAT)迅速转化为还原性胺化产物。结果,通过光氧化还原催化用胺进行的羰基化合物的还原胺化以良好至优异的产率进行,并且具有宽的底物范围和良好的官能团耐受性。这项工作的三个主要特征是:1)在光氧化还原反应中,极性匹配的HAT快速拦截富电子的α-氨基烷基自由基中间体; 2)通过光氧化还原催化本身的还原胺化方法;以及3)应用这种用于在固相支持物上进行时空控制反应的新方法,