Fraile, José M. and García, José I. and Herrerías, Clara I. and Mayoral, José A. and Reiser, Oliver and Vaultier, Michel (2004) The importance of complex stability for asymmetric copper-catalyzed cyclopropanations in [emim][OTf] ionic liquid: the bis(oxazoline)-azabis(oxazoline) case. Tetrahedron Letters 45 (36), pp. 6765-6768.
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Azabis(oxazoline)–Cu complexes are more stable than their analogues based on bis(oxazoline) ligands. This increased stability leads to improved recoverability (up to eight times) when these systems are used in an ionic liquid medium. The solution of the chiral catalyst can even be reused in different enantioselective cyclopropanation reactions and still lead to high enantiomeric excess (>90%).
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|Date:||30 August 2004|
|Institutions:||Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Oliver Reiser|
|Keywords:||Asymmetric catalysis; Ionic liquids|
|Subjects:||500 Science > 540 Chemistry & allied sciences|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||05 Sep 2006|
|Last Modified:||05 Aug 2009 13:22|