First chiral phosphite with a quaternary ammonium fragment: Synthesis and use in Rh-catalyzed asymmetric hydrogenation |
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| Authors: | S. E. Lyubimov V. A. Davankov P. M. Valetskii P. V. Petrovskii M. G. Maksimova K. N. Gavrilov |
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| Affiliation: | (1) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991 Moscow, Russian Federation;(2) S. A. Esenin Ryazan State University, 46 ul. Svobody, 390000 Ryazan, Russian Federation |
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| Abstract: | ![]()
The first representative of chiral P-monodentate phosphite ligands containing quaternary ammonium substituents and its rhodium complex [Rh(COD)(L)2]BF4 (COD is 1,5-cycloctadiene) were obtained. The use of this ligand in Rh-catalyzed asymmetric hydrogenation of prochiral methyl esters of unsaturated acids allowed one to achieve optical yields up to 99%. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1395–1398, August, 2006. |
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| Keywords: | phosphites quaternary ammonium compounds rhodium complexes asymmetric hydrogenation metal complex catalysis olefins esters ligands |
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