Thio derivatives of cyclopentanone and cyclohexanone

Mono-and bis(methylthiomethyl) substituted derivatives of cyclopentanone and cyclohexanone were obtained on the basis of natural methylmercaptan via the alkylthiomethylation of ketones, and these derivatives were converted into the corresponding γ-hydroxysulfides and ketosulfones via reduction with sodium borohydride and oxidation with hydrogen peroxide, respectively.