Oxidative Coupling of Arylboronic Acids with Arenes via Rh-Catalyzed Direct C−H Arylation
作者:Thomas Vogler、Armido Studer
DOI:10.1021/ol702659a
日期:2008.1.1
Oxidative coupling of three different arenes and a thiophene derivative with various arylboronic acids was achieved with a [RhCl(C2H4)2]2/P[p-(CF3)C6H4]3 catalyst system. Commercially available 2,2,6,6-tetramethylpiperidine-N-oxyl radical (TEMPO) was used as a stoichiometric oxidant. A 2-pyridyl group and an imine functional group served as ortho-directing groups to mediate the direct C-H arylation
[RhCl(C2H4)2] 2 / P [p-(CF3)C6H4] 3催化剂体系实现了三种不同芳烃和噻吩衍生物与各种芳基硼酸的氧化偶联。使用可商购的2,2,6,6-四甲基哌啶-N-氧基自由基(TEMPO)作为化学计量的氧化剂。2-吡啶基和亚胺官能团用作邻位导向基团,以通过Rh络合物介导直接CH芳基化。对于偶联反应,获得了中等至优异的产率。