Vinylpyridinium cations act as Michael-type acceptor^.^ We now describe the addition of sulfur nucleophiles to multiple bonds activated by an adjacent pyridinium moiety. A major aim of our work was to prepare as many of the possible isomers of the 1-[(phenylthio) propenyl]-pyridinium cation as possible and to study their relative stability. Additionally we were interested in the structural influences of the pyridinio substituent toward nucleophilic
