Triphenylsulfonium Salt Photochemistry. New Evidence for Triplet Excited State Reactions

Article abstract of DOI:10.1021/jo00243a053

Direct and sensitized photolysis of triphenylsulfonium salts can generate the triplet state which yields diphenyl sulfide as the major photoproduct.Triplet sensitization is observed in the presence of ketones with E_T > 74 kcal/mol, and the efficiency of sensitization correlates qualitatively with increasing E_T of the sensitizer.In contrast, the singlet excited state yields mainly (phenylthio)biphenyls in addition to diphenyl sulfide.