title: Synthesis and oxidation of some azole-containing thioethers.
abstract: Pyrazole and benzotriazole-containing thioethers, namely 1,5-bis(3,5-dimethylpyrazol-1-yl)-3-thiapentane, 1,8-bis(3,5-dimethylpyrazol-1-yl)-3,6-dithiaoctane and 1,3-bis(1,2,3-benzotriazol-1-yl)-2-thiapropane were prepared and fully characterized. Oxidation of the pyrazole-containing thioether by hydrogen peroxide proceeds selectively to provide a sulfoxide or sulfone, depending on the amount of oxidant used. Oxidation of the benzotriazole derivative by hydrogen peroxide is not selective, and sulfoxide and sulfone form concurrently. Selenium dioxide-catalyzed oxidation of benzotriazole thioether by H(2)O(2), however, proceeds selectively and yields sulfoxide only.
authors.affiliation: Department of Chemistry, Altai State Technical University, 46 Lenin Ave., 656038 Barnaul, Russia.
authors.forename: Andrei S
authors.initials: AS
authors.lastname: Potapov
authors.forename: Nina P
authors.initials: NP
authors.lastname: Chernova
authors.forename: Vladimir D
authors.initials: VD
authors.lastname: Ogorodnikov
authors.forename: Tatiana V
authors.initials: TV
authors.lastname: Petrenko
authors.forename: Andrei I
authors.initials: AI
authors.lastname: Khlebnikov