A copper(<scp>i</scp>)-catalyzed three-component reaction of triethoxysilanes, sulfur dioxide, and alkyl halides

Abstract

A copper(<sc>i</sc>)-catalyzed three-component reaction of triethoxysilanes, DABCO·(SO₂)₂, and alkyl halides is reported. This transformation provides a facile route to sulfones under ligand-free conditions catalyzed by copper(<sc>i</sc>) oxide. The insertion of sulfur dioxide is efficient, and both triethoxyarylsilanes and triethoxyalkylsilanes are practicable during the coupling process.