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Title
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DABCO tribromide immobilized on magnetic nanoparticle as a recyclable catalyst for the chemoselective oxidation of sulfide using H2O2 under metal- and solvent-free conditions
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Type
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JournalPaper
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Keywords
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Magnetic nanoparticles, 1,4-Diazabicyclo[2.2.2] octane tribromide, Nanocatalyst, Hydrogen peroxide, Sulfides, Sulfoxides
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Abstract
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Magnetic nanoparticle-supported 1,4-diazabicyclo[2.2.2] octane tribromide (MNPs-DABCO tribromide) as a bromine source was readily prepared and characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and vibrating sample magnetometry (VSM) techniques. The catalytic activity of MNPs-DABCO tribromide was investigated in the chemoselective oxidation of sulfides to sulfoxides using 30% H2O2as an oxidant at room temperature under solvent-free conditions. The heterogeneous catalyst could be recovered easily and reused 15 times without significant loss of its catalytic activity.
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Researchers
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Arash Ghorbani-Choghamarani (Fourth Researcher), Darush Moradi (Third Researcher), Yahya Navasi (Second Researcher), Amin Rostami (First Researcher)
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