of electron-deficient alkenes with disilanes in acetonitrile gave silylated alkanes in high yields. The photosilylation occurred in a highly regioselective manner at the position β to the electron-withdrawing groups of the alkenes. With asymmetrically substituted disilanes and polysilanes, silyl groups bearing more bulky substituents were preferentially introduced to the alkenes. The photoreactions were
Visible‐Light‐Mediated Regioselective Allylation, Benzylation, and Silylation of Methylene‐Malononitriles via Photoredox‐Induced Radical Cation Fragmentation
Visible‐light‐mediated regioselevtive allylation, benzylation, and silylation of methylene‐malononitriles with silanes have been realized. The reactions proceed via a photoredox‐catalyzed σ‐C–Si+· or σ‐Si–Si+· type radical cation fragmentation.