Hager, Markus and Wittmann, Sebastian and Schaetz, Alexander and Pein, Florian and Kreitmeier, Peter and Reiser, Oliver (2010) The importance of 1:1 and 1:2 metal-ligand species in chiral copper(II)-bis(oxazoline) complexes for catalytic activity. TETRAHEDRON-ASYMMETRY, 21 (9-10). pp. 1194-1198. ISSN 0957-4166,
Full text not available from this repository. (Request a copy)Abstract
The rate ratio of different copper(II)-bis(oxazoline) complexes for catalytic activity was assessed in a simple competitive experiment. The cumulated product enantioselectivity derived from a mixture of catalysts with antipodal chiral induction provided sufficient information to determine the relative rates in the asymmetric Friedel-Crafts alkylations of indoles with benzylidene malonates. The discovery of non-linear effects in the reaction system investigated gave insights into the active and resting states of the catalysts. This approach can serve as a tool to screen the activities of different catalysts when detailed kinetic measurements are not suggestive. (C) 2010 Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ASYMMETRIC MICHAEL ADDITION; OXAZOLINE COPPER-COMPLEXES; FRIEDEL-CRAFTS REACTION; BIS(OXAZOLINE) LIGANDS; ENANTIOSELECTIVE CATALYSIS; ELECTROSTATIC INTERACTIONS; BENZYLIDENE MALONATE; CYCLOPROPANATION; INDOLES; EFFICIENCY; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Oliver Reiser |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 30 Jul 2020 08:06 |
| Last Modified: | 30 Jul 2020 08:06 |
| URI: | https://pred.uni-regensburg.de/id/eprint/24723 |
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