TBADT/nickel co-catalyzed arylation of hydrosilanes with aryl halides

Here we report a nickel/photo co-catalyzed direct radical Si–H arylation of hydrosilanes with aryl halides. Tetrabutylammonium decatungstate (TBADT) serves as a robust hydrogen-atom-transfer (HAT) photocatalyst, working synergistically with a nickel catalyst through a cross-coupling pathway that proceeds via a silyl–nickel intermediate derived from the in situ-generated silyl radicals. This protocol features a broad substrate scope, mild photochemical conditions, and excellent functional group tolerance, offering a versatile and sustainable approach for accessing synthetically valuable arylsilanes directly from simple hydrosilanes.