Synthesis of β-keto sulfones via a multicomponent reaction through sulfonylation and decarboxylation

Abstract

A copper(<sc>i</sc>)-catalyzed synthesis of β-keto sulfones through reaction of aryldiazonium tetrafluoroborates, 3-arylpropiolic acids, sulfur dioxide, and water is realized. This reaction proceeds through a tandem radical process involving sulfonylation and decarboxylation.