Macromolecular salen catalyst with largely enhanced catalytic activity.
A dinuclear copper(II) Schiff-base complex was immobilized in a poly(acrylate) matrix by emulsion polymerization. The spheric microbeads were used for aerobic catalytic oxidation of 3,5-di-tert-butylcatechol into 3,5-di-tert-butylquinone in methanol at ambient temperature to study the contribution of the macromolecular matrix to the overall rate acceleration of the reaction. The polymeric catalyst catalyzes the oxidation about 1 order of magnitude faster (kcat/knon = 470,000) than its low molecular weight analogue (kcat/knon = 60,000).
Striegler
Susanne
S
Department of Chemistry and Biochemistry, Auburn University, 179 Chemistry Building, Auburn, Alabama 36849, USA. susanne.striegler@auburn.edu
Gichinga
Moses G
MG
Dittel
Michael
M
D002384:Catalysis; D003300:Copper / Q000737:chemistry; D005029:Ethylenediamines / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D010084:Oxidation-Reduction
D005029:Ethylenediamines; D003300:Copper; C011452:disalicylaldehyde ethylenediamine