51V and 13C NMR Spectroscopic Study of the Peroxovanadium Intermediates in Vanadium Catalyzed Enantioselective Oxidation of Sulfides Full article
| Journal |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169 |
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| Output data | Year: 2001, Volume: 171, Pages: 73-80 Pages count : 8 DOI: 10.1016/S1381-1169(01)00106-6 | ||
| Tags | Asymmetric oxidations, Chiral Schiff bases, Intermediates, NMR, Peroxo complexes of vanadium, Sulfoxides | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Foundation for Basic Research | 00-03-32438 |
Abstract:
Using 13C and 13C{1H} NMR spectroscopy, structure and reactivity of vanadium peroxo complexes formed in the catalytic system [VO(Oi-Pr)3]/Schiff base ligand/H2O2 for enantioselective oxidation of sulfides were concerned. It was shown, that two types of monoperoxo vanadium(V) species bearing one Schiff base ligand per vanadium atom predominated in this catalytic system at low temperature. These complexes are unstable at room temperature and decompose with half-life time of 20 min. The rate of this decomposition markedly increases in the presence of methyl phenyl sulfide. Addition of a fresh portion of H2O2 restores partially the peroxo vanadium intermediates. These data suggest that the peroxo vanadium species observed could be the active intermediates in enantioselective oxidation of sulfides. Two types of peroxo complexes found, probably, differ in the mode of Schiff base ligand coordination
Cite:
Bryliakov K.P.
, Karpy'shev N.N.
, Fominsky S.A.
, Tolstikov A.G.
, Talzi E.P.
51V and 13C NMR Spectroscopic Study of the Peroxovanadium Intermediates in Vanadium Catalyzed Enantioselective Oxidation of Sulfides
Journal of Molecular Catalysis A: Chemical. 2001. V.171. P.73-80. DOI: 10.1016/S1381-1169(01)00106-6 WOS Scopus РИНЦ ANCAN OpenAlex
51V and 13C NMR Spectroscopic Study of the Peroxovanadium Intermediates in Vanadium Catalyzed Enantioselective Oxidation of Sulfides
Journal of Molecular Catalysis A: Chemical. 2001. V.171. P.73-80. DOI: 10.1016/S1381-1169(01)00106-6 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Sep 21, 2000 |
| Accepted: | Jan 10, 2001 |
| Published online: | May 31, 2001 |
| Published print: | Jun 12, 2001 |
Identifiers:
| Web of science: | WOS:000169317100007 |
| Scopus: | 2-s2.0-0035849498 |
| Elibrary: | 13374755 |
| Chemical Abstracts: | 2001:419458 |
| Chemical Abstracts (print): | 135:226591 |
| OpenAlex: | W1965740784 |