Pd-Catalyzed Aerobic Oxidative Coupling of Thiophenes: Synergistic Benefits of Phenanthroline Dione and a Cu Cocatalyst
作者:Stephen J. Tereniak、David L. Bruns、Shannon S. Stahl
DOI:10.1021/jacs.0c09962
日期:2020.12.2
they are ideally prepared via directoxidative C-H/C-H coupling. Here, we report a novel PdII catalystsystem, employing 1,10-phenanthroline-5,6-dione (phd) as the ancillary ligand, that enables aerobicoxidative homocoupling of 2-bromothiophenes and other related heterocycles. These observations represent the first use of phd to support Pd-catalyzed aerobicoxidation. The reaction also benefits from