Articles with "oxidation sulfides" as a keyword



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Catalyst-free oxidation of sulfides to sulfoxides and diethylamine catalyzed oxidation of sulfides to sulfones using Oxone as an oxidant

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Published in 2017 at "Research on Chemical Intermediates"

DOI: 10.1007/s11164-017-3026-0

Abstract: We describe here our journey from the failure of our attempts in controlled oxidation of sulfides to sulfoxides using an Oxone®–KBr combination to our success in the development of a catalyst-free protocol for the oxidation… read more here.

Keywords: using oxone; oxidation; sulfides sulfoxides; oxidation sulfides ... See more keywords
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Vanadium (IV) complexes with Schiff base ligands derived from 2,3-diaminopyridine as catalyst for the oxidation of sulfides to sulfoxides with H2O2

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Published in 2018 at "Journal of the Iranian Chemical Society"

DOI: 10.1007/s13738-018-1480-2

Abstract: Sulfoxides are substances used in the synthesis of valuable complexes and as drugs in medicine. Sulfides were selectively oxidized to the corresponding sulfoxides in proper yields with (H2O2) hydrogen peroxide applying a vanadium (IV) Schiff… read more here.

Keywords: sulfides sulfoxides; oxidation sulfides; vanadium; catalyst ... See more keywords
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Selective catalytic oxidation of sulfides to sulfoxides or sulfones over amorphous Nb2O5/AC catalysts in aqueous phase at room temperature

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Published in 2019 at "Catalysis Communications"

DOI: 10.1016/j.catcom.2019.04.013

Abstract: Abstract Selective oxidation of sulfides into sulfoxides or sulfones is an important transformation in organic synthesis. Activated carbon supported Nb-based catalysts were prepared by the impregnation method and then characterized by the XRD, TEM and… read more here.

Keywords: nb2o5 catalysts; sulfoxides sulfones; sulfides sulfoxides; oxidation sulfides ... See more keywords
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Adsorptive oxidation of sulfides catalysed by δ-MnO2 decorated porous graphitic carbon composite.

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Published in 2020 at "Environmental pollution"

DOI: 10.1016/j.envpol.2020.115218

Abstract: Removal of dissolved sulfide contaminants from aqueous model solution using bio-derived porous graphitic carbon (PGC) impregnated with δ-MnO2 was investigated. The composite adsorbent was synthesized using the chemical wet deposition method wherein MnO2 was deposited… read more here.

Keywords: adsorptive oxidation; carbon; microscopy; porous graphitic ... See more keywords
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In Situ Ligand-Transformation-Involved Synthesis of Inorganic-Organic Hybrid Polyoxovanadates as Efficient Heterogeneous Catalysts for the Selective Oxidation of Sulfides.

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Published in 2020 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.0c02798

Abstract: By intentionally involving in situ ligand transformation in the reaction system, two inorganic-organic hybrid polyoxovanadates (POVs), [Co(HDTBA)V2O6] (1) and [Ni(H2O)2(DTBA)2V2O4(OH)2]·4H2O (2), have been synthesized by using a hydrothermal method, where the 3,5-di[1,2,4]triazol-1-ylbenzoic acid (HDTBA) ligand… read more here.

Keywords: heterogeneous catalysts; organic hybrid; selective oxidation; inorganic organic ... See more keywords
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Fe3O4/PEG-SO3H as a heterogeneous and magnetically-recyclable nanocatalyst for the oxidation of sulfides to sulfones or sulfoxides

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Published in 2018 at "New Journal of Chemistry"

DOI: 10.1039/c7nj02513k

Abstract: We present below a sulfonated-polyethylene glycol-coated Fe3O4 nanocomposite (Fe3O4/PEG-SO3H) as a greatly effective and ecological nanocatalyst for the selective oxidation of sulfides to sulfoxides or sulfones with brilliant yields under solvent-free conditions by employing 30%… read more here.

Keywords: fe3o4 peg; heterogeneous magnetically; so3h heterogeneous; peg so3h ... See more keywords
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Green catalysis for the selective oxidation of sulfides with high turnover numbers in water at room temperature

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Published in 2018 at "New Journal of Chemistry"

DOI: 10.1039/c8nj05170d

Abstract: A hybrid catalyst based on monoprotonated divanadium-substituted phosphotungstate ([γ-HPV2W10O40]4−) was synthesized and used for the selective oxidation of sulfides. The catalytic system was carried out in water with hydrogen peroxide at room temperature. Unprecedented turnover… read more here.

Keywords: water; turnover numbers; selective oxidation; room temperature ... See more keywords
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Fe3O4@BNPs@SiO2–SO3H as a highly chemoselective heterogeneous magnetic nanocatalyst for the oxidation of sulfides to sulfoxides or sulfones

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Published in 2019 at "RSC Advances"

DOI: 10.1039/c9ra06221a

Abstract: To achieve the green chemistry goals and importance of separation and recycling of catalyst from the reaction medium, Fe3O4@BNPs@SiO2–SO3H is introduced as a novel heterogeneous nanocatalyst for the oxidation of sulfides to sulfoxides or sulfones. read more here.

Keywords: bnps sio2; fe3o4 bnps; sio2 so3h; sulfides sulfoxides ... See more keywords
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Asymmetric oxidation of sulfides catalyzed by (R)-6,6'-dibromo-BINOL derived titanium complex

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Published in 2020 at "Synthetic Communications"

DOI: 10.1080/00397911.2020.1786121

Abstract: Abstract An efficient asymmetric oxidation of sulfides was achieved using (R)-6,6'-dibromo-BINOL as chiral ligand in combination with Ti(OiPr)4 using 70% aqueous tertiary butyl hydroperoxide as oxidant. The resulting sulfoxides had high enantiopurities and good yields.… read more here.

Keywords: oxidation sulfides; asymmetric oxidation; sulfides catalyzed; dibromo binol ... See more keywords
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Expanding the Use of Peroxygenase from Oat Flour in Organic Synthesis: Enantioselective Oxidation of Sulfides

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Published in 2023 at "International Journal of Molecular Sciences"

DOI: 10.3390/ijms24087464

Abstract: Biocatalyzed oxidations are an important target in sustainable synthesis since chemical oxidations often require harsh conditions and metal-based catalysts. A raw peroxygenase-containing enzymatic preparation from oat flour was tested as a biocatalyst for the enantioselective… read more here.

Keywords: oxidation; enantioselective oxidation; oat flour; synthesis ... See more keywords