Redox Inversion: A Radical Analogue of Umpolung Reactivity for Base- and Metal-Free Catalytic C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Coupling
作者:Chris M. Seong、Annabel Q. Ansel、Courtney C. Roberts
DOI:10.1021/acs.joc.2c02877
日期:2023.3.17
synthesis. Redox inversion, defined as switching the donor/acceptor profile of a functional group to its acceptor/donor profile, is used for C(sp3)–C(sp3) coupling. We report a photocatalytic coupling of carboxylic acids to form bibenzyls through a radical–radical coupling. Mechanistic insight is gained through control reactions. This unexplored redox-opposite relationship between a carboxylic acid and its
烷基-烷基键的构建是有机合成中的有力工具。氧化还原反转,定义为将官能团的供体/受体分布转换为其受体/供体分布,用于 C(sp 3 )–C(sp 3 ) 偶联。我们报告了羧酸通过自由基-自由基偶联形成联苄的光催化偶联。通过控制反应获得机械洞察力。羧酸及其氧化还原活性酯之间这种未探索的氧化还原-相反关系在催化中实现。