Cobalt‐Catalyzed Wagner–Meerwein Rearrangements with Concomitant Nucleophilic Hydrofluorination
作者:Reece H. Hoogesteger、Nicola Murdoch、David B. Cordes、Craig P. Johnston
DOI:10.1002/anie.202308048
日期:2023.8.28
A cobalt-catalyzed reaction has been developed, which proceeds via hydrogen atom transfer and radical-polar crossover steps, to form a phenonium ion under non-acidic conditions. This cationic intermediate can be regioselectively fluorinated by a tetrafluoroborate anion to give 1,2-aryl migrated products. Evaluation of distinctly substituted phenonium ion intermediates demonstrated the constraints for
已经开发出一种钴催化反应,该反应通过氢原子转移和自由基极性交叉步骤进行,在非酸性条件下形成苯鎓离子。该阳离子中间体可以被四氟硼酸根阴离子区域选择性氟化,得到 1,2-芳基迁移产物。对明显取代的苯鎓离子中间体的评估表明了良好反应性和高选择性的限制。