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 arylboronicacids 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.