Alkenylation of arylamines and N-arylacetamides with acetylene compounds in superacids

Vinyl type cations generated in superacid HSO 3 F by the protonation of the triple bond of acetylene compounds efficiently react with arylammonium ions and N -arylacetamides yielding alkenylation products of the aromatic rings in the given amino derivatives. The regio-and stereoselectivity of electrophilic aromatic substitution was investigated involving vinyl type cations and arylammonium ions or N -arylacetamides in HSO 3 F.