Directed Palladium-Catalyzed
Oxidative C-H Arylation of (Hetero)arenes with Arylboronic
Acids by Using TEMPO
作者:Armido Studer、Sylvia Kirchberg、Thomas Vogler
DOI:10.1055/s-0028-1083546
日期:——
Oxidative coupling of three different arenes and a thiophene derivative with various arylboronic acids with Pd(OAc) 2 and the commercially available 2,2,6,6-tetramethylpiperidine-N-oxyl radical (TEMPO) as an oxidant are reported. A 2-pyridyl group on the substrates serves as ortho-directing group to mediate the C-H arylation. Mechanistic studies are provided.
报道了三种不同的芳烃和噻吩衍生物与各种芳基硼酸与 Pd(OAc) 2 和作为氧化剂的市售 2,2,6,6-四甲基哌啶-N-氧基自由基 (TEMPO) 的氧化偶联。底物上的 2-吡啶基用作邻位导向基团以介导 CH 芳基化。提供了机理研究。