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The importance of complex stability for asymmetric copper-catalyzed cyclopropanations in [emim][OTf] ionic liquid: the bis(oxazoline)-azabis(oxazoline) case

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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Other URL: http://dx.doi.org/10.1016/j.tetlet.2004.07.030


Abstract

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 ...

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Item Type:Article
Date:30 August 2004
Institutions:Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Oliver Reiser
Identification Number:
ValueType
10.1016/j.tetlet.2004.07.030DOI
Keywords:Asymmetric catalysis; Ionic liquids
Subjects:500 Science > 540 Chemistry & allied sciences
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Unknown
Owner: Helge Knüttel (ADMIN)
Deposited On:05 Sep 2006
Last Modified:05 Aug 2009 13:22
Item ID:353
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