Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1255892 | Chinese Chemical Letters | 2010 | 4 Pages |
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 catalysts [diphosphine RuCl2 diamine] containing both t-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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Authors
Meng Lin Ma, Zong Hai Peng, Yu Guo, Li Chen, Hua Chen, Xian Jun Li,