Formal metal-free γ-arylation of 1,3-dicarbonyl compounds via an isomerisation/1,4-addition/[3,3]-sigmatropic rearrangement sequence

A metal-free redox arylation of alkynes with sulfoxides has been developed to provide unconventional access to diverse γ-arylated 1,3-dicarbonyl compounds in an atom-economical manner.