<i>Ortho</i> C–H arylation of arenes at room temperature using visible light ruthenium C–H activation
作者:Arunachalam Sagadevan、Anastasios Charitou、Fen Wang、Maria Ivanova、Martin Vuagnat、Michael F. Greaney
DOI:10.1039/d0sc01289k
日期:——
A ruthenium-catalyzedortho C–H arylation process is described using visible light. Using the readily available catalyst [RuCl2(p-cymene)]2, visible light irradiation was found to enable arylation of 2-aryl-pyridines at room temperature for a range of aryl bromides and iodides.
Synthetic and Mechanistic Studies of Pd-Catalyzed C−H Arylation with Diaryliodonium Salts: Evidence for a Bimetallic High Oxidation State Pd Intermediate
作者:Nicholas R. Deprez、Melanie S. Sanford
DOI:10.1021/ja904116k
日期:2009.8.12
influence of the arylating reagent on the reaction rate, and establish the intra- and intermolecular 1 degree H/D kinetic isotope effect. On the basis of these studies, this transformation is proposed to proceed via turnover-limiting oxidation of the Pd dimer [Pd(N~C)(OAc)](2) (N~C = 3-methyl-2-phenylpyridine) by [Mes-I-Ph]BF(4). This mechanism implicates a bimetallic high oxidation state Pd species