Enantioselective Hydrogenation of Olefins with Iridium-Phosphanodihydrooxazole Catalysts
- 2 November 1998
- journal article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 37 (20) , 2897-2899
- https://doi.org/10.1002/(sici)1521-3773(19981102)37:20<2897::aid-anie2897>3.0.co;2-8
Abstract
High turnover numbers and up to 98% ee were obtained in the catalytic hydrogenation of unfunctionalized aryl-substituted olefins with iridium-phosphanyldihydrooxazole complexes 1 (see reaction scheme). The anion of the complex-for example, hexafluorophosphate or tetrakis[3,5-bis(trifluoromethyl)phenyl]borate (BARF- )-has a remarkable effect on the reactivity and longevity of the catalyst.Keywords
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