催化作用
钴
试剂
化学
磷化氢
氧化加成
组合化学
有机化学
作者
Wenhao Li,Bo‐Chao Ye,Jiarui Yang,Ye Wang,Chang‐Jie Yang,Ying‐Ming Pan,Haitao Tang,Dingsheng Wang,Yadong Li
标识
DOI:10.1002/anie.202209749
摘要
Improving the stability of sensitive catalytic systems is an emerging research topic in the catalysis field. However, the current design of heterogeneous catalysts mainly improves their catalytic performance. This paper presents a single-atom catalyst (SAC) strategy to improve the cobalt-catalysed fluorination of acyl chlorides. A stable Co-F intermediate can be formed through the oxidative fluorination of Co1 -N4 @NC SAC, which can replace the unstable high-valent cobalt catalytic system and avoid the use of phosphine ligands. In the SAC system, KF can be employed as a fluorinating reagent to replace the AgF, which can be applied to various substrates and scale-up conversion with high turnover numbers (TON=1.58×106 ). This work also shows that inorganic SACs have tremendous potential for organofluorine chemistry, and it provides a good reference for follow-up studies on the structure-activity relationship between catalyst design and chemical reaction mechanisms.
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