Chiral copper(II) complexes of optically active Schiff bases: syntheses, crystal structure and asymmetric oxidation of methyl phenyl sulfide with hydrogen peroxide

Chiral copper(II) complexes of optically active Schiff bases with central seven-membered chelate rings for asymmetric oxidation of methyl phenyl sulfide with hydrogen peroxide. Several chiral copper(II) complexes of optically active Schiff bases ( R, R)- 4a- c, which have central seven-membered chel...

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Bibliographic Details
Published in:Polyhedron 2004-04, Vol.23 (7), p.1131-1137
Main Authors: Zhu, Hai-Bin, Dai, Zhen-Ya, Huang, Wei, Cui, Kai, Gou, Shao-Hua, Zhu, Cheng-Jian
Format: Article
Language:English
Subjects:
Asymmetric oxidation
Chiral copper(II) complexes
Schiff base
Seven-membered
Sulfide
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Summary:Chiral copper(II) complexes of optically active Schiff bases with central seven-membered chelate rings for asymmetric oxidation of methyl phenyl sulfide with hydrogen peroxide. Several chiral copper(II) complexes of optically active Schiff bases ( R, R)- 4a- c, which have central seven-membered chelate rings, have been synthesized and characterized. X-ray single crystal analysis of a typical compound indicated that the complex is monomeric and the geometry around the metal atom is very distorted tetrahedral. All the complexes have been tested as catalysts for asymmetric oxidation of methyl phenyl sulfide. The mechanism of the catalytic reaction in the presence of these complexes has been tentatively elucidated.
ISSN:0277-5387
DOI:10.1016/j.poly.2004.02.005