Journal
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
Volume 235, Issue 1-2, Pages 253-259Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molcata.2005.03.012
Keywords
binaphthyl-bridged Schiff base ligands; epoxidation; Ti(IV) complexes; allylic alcohols; microwave reactions
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A new octahedral titanium binaphthyl-bridged Schiff base complex (1) was synthesized and characterized. Analysis by H-1 and C-13-NMR spectroscopy and X-ray crystallography indicated that the C-1-symmetric cis-beta isomer is preferentially formed as one of the two possible enantiomeric couples of diasteroisomers. The catalytic behaviour of the complex 1 toward epoxidation of allylic alcohols was investigated. Using only 0.5% mol of the complex 1 the epoxyalcohols are obtained in very high regio-, chemo- and diastercoselctive way by the MW exposure of the mixture in solvent free-conditions. (c) 2005 Elsevier B.V. All rights reserved.
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