Current location: JICS Archive > Vol. 8 > No. 4 > Articles : 23

Polyvinylpolypyrrolidone-Supported Hydrogen Peroxide (PVP-H2O2), Silica Sulfuric Acid and Catalytic Amounts of Ammonium Bromide as Green, Mild and Metal-Free Oxidizing Media for the Efficient Oxidation of Alcohols and Sulfides

A. Ghorbani-Choghamarani* and G. Azadi

Department of Chemistry, Faculty of Science, Ilam University, P.O. Box 69315516, Ilam, Iran

Polyvinylpolypyrrolidone-supported hydrogen peroxide (PVP-H₂O₂), silica sulfuric acid (SiO₂OSO₃H) and catalytic amounts of ammonium bromide (NH₄Br) are introduced as green media for the in situ generation of bromoniume ion (Br⁺), which was applied for the selective oxidation of sulfides and alcohols into sulfoxides and carbonyl compounds, respectively. The oxidation reactions were carried out heterogeneously in acetonitrile, as solvent, at room temperature (oxidation of sulfides) and/or 60 °C (oxidation of alcohols).

Keywords: Polyvinylpolypyrrolidone-H2O2, Ammonium bromide, Silica sulfuric acid, Sulfide, Alcohol, Oxidation