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Synthesis, characterization and catalytic property of chiral oxo-vanadium (+)-pseudoephedrine complex supported on magnetic nanoparticles Fe3O4 in the cyanosilylation of carbonyl compounds
被引:14
作者:
Rostami, Amin
[1
,2
]
Atashkar, Bahareh
[1
]
机构:
[1] Univ Kurdistan, Fac Sci, Dept Chem, Sanandaj, Iran
[2] Univ Kurdistan, Res Ctr Nanotechnol, Sanandaj, Iran
关键词:
Carbonyl compounds;
TMSCN;
Oxovanadium-(+)-pseudoephedrine complex;
Magnetically catalyst;
ENANTIOSELECTIVE CYANOSILYLATION;
KNOEVENAGEL CONDENSATION;
SALEN COMPLEX;
ALDEHYDES;
EFFICIENT;
OXIDATION;
ALCOHOLS;
SILICA;
D O I:
10.1016/j.catcom.2014.08.029
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Vanadium complex of pseudoephedrine immobilized on magnetic nanoparticle Fe3O4(Pseudoephedrine) @MNPs] was prepared and characterized by UV-vis, SEM, XRD, TGA, EDX, FT-IR, AGFM and elemental analysis techniques. VO(Pseudoephedrine)@MNPs was found to catalyze the cyanosilylation of carbonyl compounds using TMSCN in good yields with 8-25% enantiomeric excesses under solvent-free conditions at room temperature. The catalyst was recycled up to 15 times with little loss of activity and enantioselectivity. (C) 2014 Elsevier B.V. All rights reserved.
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页码:80 / 84
页数:5
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