引用本文:
Meng Lin Ma, Zong Hai Peng, Yu Guo, Li Chen, Hua Chen, Xian Jun Li. Alkoxy substituted MeO-BIPHEP-type diphosphines ligands for asymmetric hydrogenation of aryl ketones[J]. Chinese Chemical Letters,
2010, 21(5): 576-579.
doi:
10.1016/j.cclet.2010.01.030
Citation: Meng Lin Ma, Zong Hai Peng, Yu Guo, Li Chen, Hua Chen, Xian Jun Li. Alkoxy substituted MeO-BIPHEP-type diphosphines ligands for asymmetric hydrogenation of aryl ketones[J]. Chinese Chemical Letters, 2010, 21(5): 576-579. doi: 10.1016/j.cclet.2010.01.030
Citation: Meng Lin Ma, Zong Hai Peng, Yu Guo, Li Chen, Hua Chen, Xian Jun Li. Alkoxy substituted MeO-BIPHEP-type diphosphines ligands for asymmetric hydrogenation of aryl ketones[J]. Chinese Chemical Letters, 2010, 21(5): 576-579. doi: 10.1016/j.cclet.2010.01.030
Alkoxy substituted MeO-BIPHEP-type diphosphines ligands for asymmetric hydrogenation of aryl ketones
摘要:
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.
English
Alkoxy substituted MeO-BIPHEP-type diphosphines ligands for asymmetric hydrogenation of aryl ketones
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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Key words:
- Aryl ketone
- / Asymmetric hydrogenation
- / Biaryl phosphines ligands
- / Ruthenium complex
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