Activation and facile dealkylation of monooxides of 2,2′-bis(alkylthio)biphenyl with triflic anhydride via dithiadications: A new method for preparation of thiasulfonium salts

Article abstract of DOI:10.1016/0040-4039(95)02228-7

Monooxides of 2,2′-bis(alkylthio)biphenyl undergo facile monodealkylation on treatment with triflic anhydride to afford the corresponding thiasulfonium salts except bis(methylthio) derivative. The reaction proceeds via an initial formation of the corresponding dithiadications.