Metal-free catalytic oxidation of sulfides to sulfoxides with ammonium nitrate, ammonium hydrogen sulfate and ammonium bromide as catalyst

A Ghorbani-Choghamarani, MA Zolfigol…

Index: Ghorbani-Choghamarani, Arash; Zolfigol, Mohammad Ali; Ayazi-Nasrabadi, Roia Journal of the Brazilian Chemical Society, 2010 , vol. 21, # 1 p. 33 - 36

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Citation Number: 15

Abstract

ABSTRACT A general and metal-free catalytic oxidation of aliphatic and aromatic sulfides to their corresponding sulfoxides via combination of ammonium nitrate (NH 4 NO 3), supported ammonium hydrogen sulfate on silica gel (NH 4 HSO 4-SiO 2) and a catalytic amount of ammonium bromide (NH 4 Br) in the presence of wet SiO 2 (50%, w/w) has been investigated. The reactions were carried out heterogeneously and selectively in short ...