Selective Hydrogen Atom Abstraction through Induced Bond Polarization: Direct α‐Arylation of Alcohols through Photoredox, HAT, and Nickel Catalysis
作者:Jack Twilton、Melodie Christensen、Daniel A. DiRocco、Rebecca T. Ruck、Ian W. Davies、David W. C. MacMillan
DOI:10.1002/anie.201800749
日期:2018.5.4
The combination of nickel metallaphotoredox catalysis, hydrogen atom transfer catalysis, and a Lewis acid activation mode, has led to the development of an arylation method for the selective functionalization of alcohol α‐hydroxy C−H bonds. This approach employs zinc‐mediated alcohol deprotonation to activate α‐hydroxy C−H bonds while simultaneously suppressing C−O bond formation by inhibiting the
镍金属光氧化还原催化、氢原子转移催化和路易斯酸活化模式的结合,开发了一种用于醇α-羟基C-H键选择性官能化的芳基化方法。该方法采用锌介导的醇去质子化来激活 α-羟基 C-H 键,同时通过抑制醇镍物质的形成来抑制 C-O 键的形成。使用锌基路易斯酸也会使其他氢键失活,例如 α-氨基和 α-氧基 C-H 键。这种方法有助于快速获得苯甲醇,这是药物发现的一个重要主题。药物百忧解的三步合成例证了这种新方法的实用性。