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Title
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Chiral oxo-vanadium (+)-pseudoephedrine complex supported on magnetic nanoparticles: an efficient, recyclable novel catalyst for eco-friendly oxidation of sulfides and cyanosilylation of carbonyl compounds
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Type
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Presentation
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Keywords
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Chiral oxo-vanadium (+)-pseudoephedrine , magnetic , nanoparticles, catalyst, oxidation, sulfides, cyanosilylation, carbonyl compound
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Abstract
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Magnetic nanoparticles (MNPs) are considered as ideal supports for the heterogenization of homogeneous catalysts, since they can be recollected by using an external magnet [1]. The chemoselective preparation of chiral and achiral sulfoxidesis extremely important in intermediates for the construction of various chemically and biologically significant molecules [2]. asymmetric addition of a cyanidesource to carbonyl compounds with a chiral catalyst representsone of the most appealing approaches to enantiomericallyenriched cyanohydrins, which can be readily transformed into number of key functional groups [3].Although a wide variety systems are available for sulfoxidation and cyanosilylation reactions however separable and reusable of catalysts or reagents are difficult. In continuation of our studies on magnetic nanocatalysts [4], herein, we prepared a new chiral oxovanadium (V) (+)Pseudoephedrine complex supported on magnetic nanoparticle Fe3O4, and examined its catalytic properties in the oxidation of sulfides to sulfoxides and cyanosilylation of carbonyl compounds In summary, we have synthesized MNPsVO (Pseudoephedrine) as a novel catalyst for the oxidation of sulfides to sulfoxides and cyanosilylation of carbonyl compounds for the first time. The significant advantages of these procedures are (a) the use of the ecofriendly, costeffective, highly reusable and chemically stable catalyst, (b) mild reaction conditions and very easy work up.
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Researchers
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Amin Rostami (Second Researcher), bahareh atashkar (First Researcher)
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