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Bioinspired covalently grafted Cu(II)-C protected amino acid complexes: selective catalysts in the epoxidation of cyclohexene

Varga, Gabor; Timar, Zita; Schemhl, Hajnal; Csendes, Zita; Bajnoczi, Eva G.; Carlson, Stefan LU ; Sipos, Pal and Palinko, Istvan (2015) In Reaction Kinetics, Mechanisms and Catalysis 115(1). p.33-43
Abstract
In this work, the syntheses of covalently grafted C-protected Cu(II)-amino acid (methylesters of l-histidine and l-cystine) uniform and mixed ligand complexes with two different amino acid esters are described using chloropropylated silica gel as the support. The conditions of the syntheses were systematically altered. The structural features of the substances obtained were studied by the Kjeldahl method, ICP-MS, X-ray absorption and mid/far infrared spectroscopies. The superoxide dismutase-like activities of the materials were determined in a biochemical test reaction and these substances were also tested as catalysts in the oxidation of cyclohexene. It was possible to prepare metal ion-amino acid complexes grafted with covalent bonds... (More)
In this work, the syntheses of covalently grafted C-protected Cu(II)-amino acid (methylesters of l-histidine and l-cystine) uniform and mixed ligand complexes with two different amino acid esters are described using chloropropylated silica gel as the support. The conditions of the syntheses were systematically altered. The structural features of the substances obtained were studied by the Kjeldahl method, ICP-MS, X-ray absorption and mid/far infrared spectroscopies. The superoxide dismutase-like activities of the materials were determined in a biochemical test reaction and these substances were also tested as catalysts in the oxidation of cyclohexene. It was possible to prepare metal ion-amino acid complexes grafted with covalent bonds onto the supports. All the covalently anchored materials displayed superoxide dismutase-like activity and most of them were active in the oxidation of cyclohexene, providing the epoxide with high selectivity. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cu(II)-amino acid complexes, FT-IR, XAS, Superoxide dismutase-like, activity, Heterogeneous catalytic oxidation
in
Reaction Kinetics, Mechanisms and Catalysis
volume
115
issue
1
pages
33 - 43
publisher
Springer
external identifiers
  • wos:000354099000003
  • scopus:84908288444
ISSN
1878-5204
DOI
10.1007/s11144-014-0796-x
language
English
LU publication?
yes
id
95bbc3d9-6588-4f60-935a-09360638a186 (old id 7425414)
date added to LUP
2015-06-25 14:29:09
date last changed
2017-01-01 03:15:31
@article{95bbc3d9-6588-4f60-935a-09360638a186,
  abstract     = {In this work, the syntheses of covalently grafted C-protected Cu(II)-amino acid (methylesters of l-histidine and l-cystine) uniform and mixed ligand complexes with two different amino acid esters are described using chloropropylated silica gel as the support. The conditions of the syntheses were systematically altered. The structural features of the substances obtained were studied by the Kjeldahl method, ICP-MS, X-ray absorption and mid/far infrared spectroscopies. The superoxide dismutase-like activities of the materials were determined in a biochemical test reaction and these substances were also tested as catalysts in the oxidation of cyclohexene. It was possible to prepare metal ion-amino acid complexes grafted with covalent bonds onto the supports. All the covalently anchored materials displayed superoxide dismutase-like activity and most of them were active in the oxidation of cyclohexene, providing the epoxide with high selectivity.},
  author       = {Varga, Gabor and Timar, Zita and Schemhl, Hajnal and Csendes, Zita and Bajnoczi, Eva G. and Carlson, Stefan and Sipos, Pal and Palinko, Istvan},
  issn         = {1878-5204},
  keyword      = {Cu(II)-amino acid complexes,FT-IR,XAS,Superoxide dismutase-like,activity,Heterogeneous catalytic oxidation},
  language     = {eng},
  number       = {1},
  pages        = {33--43},
  publisher    = {Springer},
  series       = {Reaction Kinetics, Mechanisms and Catalysis},
  title        = {Bioinspired covalently grafted Cu(II)-C protected amino acid complexes: selective catalysts in the epoxidation of cyclohexene},
  url          = {http://dx.doi.org/10.1007/s11144-014-0796-x},
  volume       = {115},
  year         = {2015},
}