Direct Synthesis of Aryl Halosilanes through Iridium(I)-Catalyzed Aromatic C-H Silylation by Disilanes

摘要

Aryl halosilanes and their hypervalent derivatives are versatile reagents for carbon-carbon and carbon-heteroatom bond formation in modern organic synthesis.Although they have been prepared by arylation of halosilanes with aryl magnesium or aryl lithium reagents,and by Pd-catalyzed cross-coupling of halogenated disilanes with aryl electrophiles,direct silylation of arenes through C-H bond activation would provide a more attractive route from the viewpoints of economy,efficiency,and environmental benignity.