Palladium-Catalyzed Solid-State Polyfluoroarylation of Aryl Halides Using Mechanochemistry
作者:Rikuro Takahashi、Tamae Seo、Koji Kubota、Hajime Ito
DOI:10.1021/acscatal.1c03731
日期:2021.12.17
products. Here, we show that solid-state high-temperature ball-milling conditions facilitate a palladium-catalyzed cross-coupling with polyfluorinated arylboronic acids and pinacol esters employing a simple catalytic system in the absence of any stoichiometric additives. This reaction exhibits a broad substrate scope and can be carried out in air, and the use of large amounts of dry and degassed organic solvents
多氟化芳基硼亲核试剂和芳基卤化物之间的 Suzuki-Miyaura 交叉偶联能够有效构建有机材料和催化剂中常见的多氟化结构基序。与这种转化相关的一个关键挑战涉及弱亲核多氟化有机硼试剂的缓慢金属转移,这通常会降低偶联产物的产率。在这里,我们展示了固态高温球磨条件促进了钯催化与多氟化芳基硼酸和频哪醇酯的交叉偶联,在没有任何化学计量添加剂的情况下,采用简单的催化体系。该反应底物范围广,可在空气中进行,不需要使用大量干燥脱气的有机溶剂。