Transition‐Metal‐Free Direct C−H Silylation of Electron‐Deficient Heteroarenes with Hydrosilanes via a Radical Mechanism

Abstract A direct C−H silylation of electron‐deficient heteroarenes was achieved via a radical reaction between pyridines or other N‐heterocycles and hydrosilanes in the presence of acetic acid, di‐ tert ‐butyl peroxide, and tert ‐butyl mercaptan. The present approach allows the direct introduction of trialkylsilyl substituents at the ortho ‐position of various electron‐deficient heteroarenes.