Syntheses of RuHCl(CO)(PAr<sub>3</sub>)<sub>3</sub> and RuH<sub>2</sub>(CO)(PAr<sub>3</sub>)<sub>3</sub> Containing Various Triarylphosphines and Their Use for Arylation of Sterically Congested Aromatic C–H Bonds
A series of ruthenium complexes, RuHCl(CO)(PAr3)(3) and RuH2(CO)(PAr3)(3), containing various triarylphosphines were synthesized. Screening of these complexes as catalysts for direct arylation of sterically congested ortho C-H bonds of aromatic ketones improved the yields of the arylation products.