期刊
GREEN CHEMISTRY
卷 13, 期 5, 页码 1230-1237出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0gc00943a
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资金
- Memorial University of Newfoundland
- Natural Sciences and Engineering Research Council (NSERC) of Canada
- Canada Foundation for Innovation (CFI)
- Government of Newfoundland and Labrador
A practical method of olefin epoxidation was developed by combining FeCl3 center dot 6H(2)O and 1-methylimidazole in acetone using H2O2 as the terminal oxidant. This system showed very good reactivity toward epoxidation of both terminal and substituted alkenes. The use of tridentate and tetradentate amine-bis(phenolate) ligands as additives was also examined. Modest improvement in selectivity was achieved if a bulky tridentate ligand was used. Generally, however, the simple catalyst system involving ferric chloride, 1-methylimidazole and dilute H2O2 in acetone proved most successful in achieving good to excellent yields of epoxide products for a number of substrates, including aromatic and aliphatic alkenes.
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