Direct α-Arylation of Benzo[<i>b</i>]furans Catalyzed by a Pd<sub>3</sub> Cluster
作者:Jian Yao、Lili Shao、Xi Kang、Manzhou Zhu、Xiaohong Huo、Xiaoming Wang
DOI:10.1021/acs.joc.3c02428
日期:2024.2.2
organic transformations and mechanistic investigations is still largely unexploited. Herein, we disclose the use of trinuclear palladium (Pd3Cl) species as an active catalyst for the direct C–H α-arylation of benzo[b]furans with aryl iodides to afford 2-arylbenzofurans in good yields under mild conditions. With this method, broad substrate adaptability was observed, and several drug intermediates were
作为基于更传统的单核分子 Pd 配合物和广泛用于有机合成的 Pd n纳米粒子的催化剂之间的过渡范例,多核钯簇因其独特的反应性和电子特性而引起了极大的关注。然而,用于有机转化和机理研究的钯簇催化剂的开发在很大程度上仍未得到开发。在此,我们公开了使用三核钯(Pd 3 Cl)物质作为活性催化剂,用于苯并[ b ]呋喃与芳基碘化物的直接C-H α-芳基化,在温和条件下以良好的产率提供2-芳基苯并呋喃。利用该方法,观察到了广泛的底物适应性,并以高产率合成了多种药物中间体。机理研究表明,Pd 3核心很可能在整个反应过程中保持完整。