Enantioselective Synthesis of (S)-Γ-Amino Alcohols by Ru/Rh/Ir Catalyzed Asymmetric Transfer Hydrogenation (ATH) with Tunable Chiral Tetraaza Ligands in Water
Abstract: (R/S)-γ-Amino alcohols are the key intermediates for the preparation of Fluoxetine, Atomoxetine, Nisoxetine and Duloxetine. In this paper, we describe an effective method to obtain (S)-γ-amino alcohols by Ru/Rh/Ir catalyzed asymmetric transfer h
Asymmetric transfer hydrogenation of aromatic ketones catalyzed by new chiral C2-symmetric bis(sulfonyl) tetraaza ligands complexed with [Ru(η6-p-cymene)Cl2]2 in water
In this report, a new series of C2-symmetric bis(sulfonyl) tetraaza ligands were synthesized from (1S,2S)-1,2-diarylethylenediamine analogues and tested in the asymmetric transfer hydrogenation (ATH) of aromatic ketones by complexing with [Ru(η6-p-cymene)Cl2]2 employing sodium formate as hydrogen source in neat water. A moderate to excellent conversion (~99.8 %) and overall satisfying enantioselectivity (~92.8 %) were obtained with varied electronic and steric effects of the substituents on ligands and substrates.
Liu, Xungao,Zhang, Tian,Hu, Yingying,Shen, Liang
p. 1289 - 1295
(2014/07/21)
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