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

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

A general and metal-free catalytic oxidation of aliphatic and aromatic sulfides to their corresponding sulfoxides via combination of ammonium nitrate (NH4NO3), supported ammonium hydrogen sulfate on silica gel (NH4HSO4-SiO2) and a catalytic amount of ammonium bromide (NH4Br) in the presence of wet SiO2 (50%, w/w) has been investigated. The reactions were carried out heterogeneously and selectively in short reaction times in CH2Cl2 at room temperature. This protocol is mild and efficient compared to other reported methods.

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Main Authors: Ghorbani-Choghamarani,Arash, Zolfigol,Mohammad Ali, Ayazi-Nasrabadi,Roia
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 2010
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000100006
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spelling oai:scielo:S0103-505320100001000062010-02-19Metal-free catalytic oxidation of sulfides to sulfoxides with ammonium nitrate, ammonium hydrogen sulfate and ammonium bromide as catalystGhorbani-Choghamarani,ArashZolfigol,Mohammad AliAyazi-Nasrabadi,Roia sulfides sulfoxide ammonium hydrogen sulfate (NH4HSO4) ammonium nitrate (NH4NO3) ammonium bromide (NH4Br) homoselectivity A general and metal-free catalytic oxidation of aliphatic and aromatic sulfides to their corresponding sulfoxides via combination of ammonium nitrate (NH4NO3), supported ammonium hydrogen sulfate on silica gel (NH4HSO4-SiO2) and a catalytic amount of ammonium bromide (NH4Br) in the presence of wet SiO2 (50%, w/w) has been investigated. The reactions were carried out heterogeneously and selectively in short reaction times in CH2Cl2 at room temperature. This protocol is mild and efficient compared to other reported methods.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.21 n.1 20102010-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000100006en10.1590/S0103-50532010000100006
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Ghorbani-Choghamarani,Arash
Zolfigol,Mohammad Ali
Ayazi-Nasrabadi,Roia
spellingShingle Ghorbani-Choghamarani,Arash
Zolfigol,Mohammad Ali
Ayazi-Nasrabadi,Roia
Metal-free catalytic oxidation of sulfides to sulfoxides with ammonium nitrate, ammonium hydrogen sulfate and ammonium bromide as catalyst
author_facet Ghorbani-Choghamarani,Arash
Zolfigol,Mohammad Ali
Ayazi-Nasrabadi,Roia
author_sort Ghorbani-Choghamarani,Arash
title Metal-free catalytic oxidation of sulfides to sulfoxides with ammonium nitrate, ammonium hydrogen sulfate and ammonium bromide as catalyst
title_short Metal-free catalytic oxidation of sulfides to sulfoxides with ammonium nitrate, ammonium hydrogen sulfate and ammonium bromide as catalyst
title_full Metal-free catalytic oxidation of sulfides to sulfoxides with ammonium nitrate, ammonium hydrogen sulfate and ammonium bromide as catalyst
title_fullStr Metal-free catalytic oxidation of sulfides to sulfoxides with ammonium nitrate, ammonium hydrogen sulfate and ammonium bromide as catalyst
title_full_unstemmed Metal-free catalytic oxidation of sulfides to sulfoxides with ammonium nitrate, ammonium hydrogen sulfate and ammonium bromide as catalyst
title_sort metal-free catalytic oxidation of sulfides to sulfoxides with ammonium nitrate, ammonium hydrogen sulfate and ammonium bromide as catalyst
description A general and metal-free catalytic oxidation of aliphatic and aromatic sulfides to their corresponding sulfoxides via combination of ammonium nitrate (NH4NO3), supported ammonium hydrogen sulfate on silica gel (NH4HSO4-SiO2) and a catalytic amount of ammonium bromide (NH4Br) in the presence of wet SiO2 (50%, w/w) has been investigated. The reactions were carried out heterogeneously and selectively in short reaction times in CH2Cl2 at room temperature. This protocol is mild and efficient compared to other reported methods.
publisher Sociedade Brasileira de Química
publishDate 2010
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000100006
work_keys_str_mv AT ghorbanichoghamaraniarash metalfreecatalyticoxidationofsulfidestosulfoxideswithammoniumnitrateammoniumhydrogensulfateandammoniumbromideascatalyst
AT zolfigolmohammadali metalfreecatalyticoxidationofsulfidestosulfoxideswithammoniumnitrateammoniumhydrogensulfateandammoniumbromideascatalyst
AT ayazinasrabadiroia metalfreecatalyticoxidationofsulfidestosulfoxideswithammoniumnitrateammoniumhydrogensulfateandammoniumbromideascatalyst
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