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The Influence of Substituents in Diphosphine Ligands on the Hydrogenation Activity and Selectivity of the Corresponding Rhodium Complexes as Exemplified by ButiPhane
Article first published online: 17 NOV 2011
DOI: 10.1002/cctc.201100277
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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How to Cite
Fischer, C., Schulz, S., Drexler, H.-J., Selle, C., Lotz, M., Sawall, M., Neymeyr, K. and Heller, D. (2012), The Influence of Substituents in Diphosphine Ligands on the Hydrogenation Activity and Selectivity of the Corresponding Rhodium Complexes as Exemplified by ButiPhane. ChemCatChem, 4: 81–88. doi: 10.1002/cctc.201100277
Publication History
- Issue published online: 27 DEC 2011
- Article first published online: 17 NOV 2011
- Manuscript Received: 15 AUG 2011
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- 9Due to isobaric conditions, the determined pseudo rate constants still contain the hydrogen concentration in solution, which is proportional to the overall pressure above the solution under consideration of the solvent vapor pressure: k'2diolefin=k2diolefin[H2].
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- 11Standard conditions: 0.01 mmol rhodium complex and 1.0 mmol prochiral olefin in 15.0 mL MeOH at 25.0 °C and 1 bar total pressure.
- 12Hydrogen consumption rates cannot register greater than 12 mL min−1 without influence of diffusion for the used hydrogenation equipment.
- 13The purity of commercially available diolefin precatalysts, the licensing rights of which are held by Solvias AG, is higher than 95 % as determined by using 31P NMR spectroscopy. When necessary, the diolefin complexes can be further purified through simple recrystallization in methanol or dichloromethane/diethyl ether mixture, respectively.
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