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Asymmetric hydrogenation reactions with Rh and Ru complexes bearing phosphine-phosphites with an oxymethylene backbone

 

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Opened Access Asymmetric hydrogenation reactions with Rh and Ru complexes bearing phosphine-phosphites with an oxymethylene backbone
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Author: Kleman, Patryk Artur
Vaquero Gutiérrez, Mónica
Arribas Nieto, Inmaculada
Suárez Escobar, Andrés Luis
Álvarez González, Eleuterio
Pizzano Mancera, Antonio
Date: 2014
Published in: Tetrahedron Asymmetry, 25, 744-749.
Document type: Article
Abstract: Phosphine-phosphites 3a and 3b, derived from diphenylhydroxymethyl phosphine have been prepared. From these ligands [Rh(COD)(3a)]BF4 5a and RuCl2(3b)[(S,S)-DPEN] 6b (DPEN = 1,2-diphenylethylenediamine) were synthesized and their structure determined by X-ray diffraction. Ligands 3 are characterized by a small bite angle of 83°. In addition, 5a led to an active catalyst for the hydrogenation of olefins, giving enantioselectivities of up to 96% ee. Likewise, compound 6b showed good activity and enantioselectivity in the hydrogenation of N-1-phenyl ethylidene aniline and a completed reaction at S/C = 500 in 24 h with 83% ee.
Cite: Kleman, P.A., Vaquero Gutiérrez, M., Arribas Nieto, I., Suárez Escobar, A.L., Álvarez González, E. y Pizzano Mancera, A. (2014). Asymmetric hydrogenation reactions with Rh and Ru complexes bearing phosphine-phosphites with an oxymethylene backbone. Tetrahedron Asymmetry, 25, 744-749.Kleman, P.A., Vaquero Gutiérrez, M., Arribas Nieto, I., Suárez Escobar, A.L., Álvarez González, E. y Pizzano Mancera, A. (2014). Asymmetric hydrogenation reactions with Rh and Ru complexes bearing phosphine-phosphites with an oxymethylene backbone. Tetrahedron Asymmetry, 25, 744-749.
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URI: https://hdl.handle.net/11441/70039

DOI: 10.1016/j.tetasy.2014.04.001

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