Alkoxy substituted MeO-BIPHEP-type diphosphines ligands for asymmetric hydrogenation of aryl ketones |
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| Authors: | Meng Lin Ma Zong Hai Peng Yu Guo Li Chen Hua Chen Xian Jun Li |
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| Institution: | a Department of Chemistry, Xihua University, Chengdu 610039, China;b Key Lab of Green Chemistry and Technology, Ministry of Education, The Institute of Homogeneous Catalysis, Faculty of Chemistry, Sichuan University, Chengdu 610064, China |
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| Abstract: | In this paper, a series of optically active MeO-BIPHEP-type ligands, (S)-6,6'-dimethoxy-2,2'-bis(di-p-alkoxyphenylphosphine)-1,1'-biphenyl were synthesized and used to prepare the ruthenium complex. The effects of para-substituted were observed, the results showed that the ruthenium catalystsdiphosphine RuCl2 diamine]containing both f-Bu and I-Pr substitutions have better activities and enantioselectivities than the non-substituted ruthenium catalysts in the asymmetric hydrogenation of acetophenone. |
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| Keywords: | Aryl ketone Asymmetric hydrogenation Biaryl phosphines ligands Ruthenium complex |
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