期刊
APPLIED CATALYSIS A-GENERAL
卷 413, 期 -, 页码 332-339出版社
ELSEVIER
DOI: 10.1016/j.apcata.2011.11.024
关键词
Aerobic oxidation; Polydimethylsiloxane (PDMS); Tetradentate; 2,2,6,6-Tetramethylpiperidyl-1-oxy (TEMPO); Copper; Green chemistry
资金
- NSERC of Canada
- Canada Foundation for Innovation
- provincial government of Newfoundland and Labrador (IRIF)
- Memorial University
A series of tetradentate pyridyl-imine terminated Schiff-base ligands has been investigated for their ability in the catalytic oxidation of alcohols when combined with copper bromide (CuBr2) and 2,2,6,6-tetramethylpiperidyl-1-oxy (TEMPO). Analogous bidentate ligands showed poorer catalytic activity and the ratio of Cu:ligand was of crucial importance in maintaining high yields. The polydimethylsiloxane (PDMS) derived pyridyl-imine terminated ligand combined with copper(II) ions affords an effective and selective catalyst for aerobic oxidations of primary and secondary alcohols under aqueous conditions. Preliminary mechanistic studies suggest that bimetallic complexes may be playing a role in the catalytic transformation. (C) 2011 Elsevier B.V. All rights reserved.
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