Complexes containing the (R,R)-N,N-bis(2-hydroxy-3-functionalised-benzylidene)-1,2-diaminocyclohexane ligand: synthesis and X-ray analyses of titanium chloro and oxo derivatives |
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Authors: | Amber Davis |
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Affiliation: | Department of Chemistry, School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK |
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Abstract: | Titanium complexes based on the (R,R)-N,N′-bis(2-hydroxy-3-functionalised-benzylidene)-1,2-diaminocyclohexane ligand and containing either chloro or bridged oxo co-ligands have been prepared, subjected to single crystal X-ray analysis and examined as pre-catalysts for the asymmetric phospho-aldol (PA) reaction. Catalysis does take place although at a much slower rate than with related aluminium complexes and then only to afford racemic products; significant observations that lead to an important design point in PA pre-catalysts. |
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Keywords: | Salcyen Titanium Complexes Asymmetric |
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