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Carboranylphosphites as new ligands for Rh-catalyzed asymmetric hydrogenation |
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| Authors: | S. E. Lyubimov A. S. Safronov A. A. Tyutyunov V. N. Kalinin E. E. Said-Galiev A. R. Khokhlov P. V. Petrovskii P. M. Valetskii V. A. Davankov |
| Affiliation: | (1) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991 Moscow, Russian Federation |
| Abstract: | First representatives of chiral carborane-based phosphite ligands were synthesized. The enantiomeric excess in the Rh-catalyzed hydrogenation of dimethyl itaconate with the use of these ligands reaches 67% in CH2Cl2 and 62% in supercritical CO2, the ee and conversion being strongly dependent on the hydrogen pressure. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 337–340, February, 2008. |
| Keywords: | carboranes phosphite ligands metal complex catalysis asymmetric hydrogenation dimethyl itaconate |
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