The addition of sulfenyl halides to hydrocarbon olefins to give p-haloalkyl sulfides is well known. 2 The evidence thus far obtained indicates that the reaction is an ionic one and that the mechanism involves attack by the electrophilic sulfenium group upon the electron-rich double bond, generally resulting in the predominant (and sometimes exclusive) formation of a single isomer (the XIarkownikoff isomer). Apparently very little attention has been given ...
