Pd(0)/Blue Light Promoted Carboiodination Reaction – Evidence for Reversible C–I Bond Formation via a Radical Pathway
作者:Austin D. Marchese、Andrew G. Durant、Cian M. Reid、Clara Jans、Ramon Arora、Mark Lautens
DOI:10.1021/jacs.2c09716
日期:2022.11.16
A Pd(0)/blue light catalyzed carboiodination reaction is reported. A simple, air-stable catalytic system, utilizing [Pd(allyl)Cl]2 and DPEPhos, generated a variety of iodinated hetero- and carbocycles including oxindoles, dihydrobenzofurans, indolines, a chromane, and a tetrahydronaphthalene. This protocol was tolerant of sensitive functional groups including free carboxylic acids, phenols, and anilines
报道了 Pd(0)/蓝光催化的碳碘化反应。一个简单、空气稳定的催化系统,利用 [Pd(allyl)Cl] 2和 DPEPhos,生成各种碘化杂环和碳环,包括羟吲哚、二氢苯并呋喃、二氢吲哚、苯并二氢萘和四氢萘。该方案可耐受敏感官能团,包括游离羧酸、酚类、苯胺类以及吡啶类,同时提供高达 94% 的产率。使用氘标记的底物和化学计量的新戊基钯物质,通过单电子机制支持可逆的 C-I 键形成。