Selective Oxidation of Sulfides to Sulfones by H sub(2)O sub(2) Catalyzed by Fe-Substituted Sandwich Type Polyoxometalate

Catalytic activity of the sandwich-type heteropolytungstates ([(XW sub(9)O sub(39))M sub(4)] super((n-m)-,) where X = P, Si, As and M = Mn, Fe, Co, Ni, Cu and Zn) in the selective oxidation of sulfides to corresponding sulfone with aqueous H sub(2)O sub(2) have been studied in acetonitrile. In compa...

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Published in:Journal of cluster science 2016-01, Vol.27 (1), p.373-386
Main Authors: Haddadi, Hedayat, Farsani, Mostafa Riahi
Format: Article
Language:English
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Catalysts
Clusters
Hydroxyl groups
Nickel
Oxidation
Polyoxometallates
Sulfides
Sulfones
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description Catalytic activity of the sandwich-type heteropolytungstates ([(XW sub(9)O sub(39))M sub(4)] super((n-m)-,) where X = P, Si, As and M = Mn, Fe, Co, Ni, Cu and Zn) in the selective oxidation of sulfides to corresponding sulfone with aqueous H sub(2)O sub(2) have been studied in acetonitrile. In comparison, different sandwich type polyoxometalates with various transition metals substituted and heteroatoms, TBAPWFe was found to be more active to each other's. This catalyst with 2.5 equivalent of hydrogen peroxide, converted various sulfides to the corresponding sulfone with 96.8-99 % selectivity at 94-97 % conversion. Furthermore, for oxidizing various sulfides to the corresponding sulfone, the sulfide function is highly reactive and other functional groups such as the double bond and hydroxyl group are tolerable. This catalyst indicated very good reusability in the oxidation reaction.
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subjects Catalysts
Clusters
Hydroxyl groups
Nickel
Oxidation
Polyoxometallates
Sulfides
Sulfones
title Selective Oxidation of Sulfides to Sulfones by H sub(2)O sub(2) Catalyzed by Fe-Substituted Sandwich Type Polyoxometalate
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