Palladium-Catalyzed Conversion of Benzylic and Allylic Halides into α-Aryl and β,γ-Unsaturated Tertiary Amides by the Use of a Carbamoylsilane

[reaction: see text] Treatment of allylic and benzylic halides with N,N-dimethylcarbamoyl(trimethyl)silane in the presence of tetrakis(triphenylphosphine)palladium(0) affords tertiary amides, which arise from the replacement of the halogen by the N,N-dimethylcarbamoyl group.