844439-52-7Relevant articles and documents
Chiral 1-phenylethylamine-derived phosphine-phosphoramidite ligands for highly enantioselective Rh-catalyzed hydrogenation of β-(acylamino) acrylates: Significant effect of substituents on 3,3′-positions of binaphthyl moiety
Zhou, Xiao-Mao,Huang, Jia-Di,Luo, Li-Bin,Zhang, Chen-Lu,Hu, Xiang-Ping,Zheng, Zhuo
supporting information; experimental part, p. 2320 - 2322 (2010/07/07)
A series of new chiral phosphine-phosphoramidite ligands with a 3,3′-substituted binaphthyl moiety were prepared from 1-phenylethylamine, and successfully applied in the Rh-catalyzed asymmetric hydrogenation of β-(acylamino)acrylates. The research disclosed that the substituents on the 3,3′-positions of binaphthyl moiety significantly influenced the enantioselectivity.
Practical Rh(I)-catalyzed asymmetric hydrogenation of β-(acylamino) acrylates using a new unsymmetrical hybrid ferrocenylphosphine-phosphoramidite ligand: Crucial influence of an N-H proton in the ligand
Hu, Xiang-Ping,Zheng, Zhuo
, p. 419 - 422 (2007/10/03)
(Chemical Equation Presented) Excellent enantioselectivities and high turnovers (S/C = 5000) were achieved in the Rh(I)-catalyzed asymmetric hydrogenation of both β-aryl-and β-alkyl-β-(acylamino)acrylates with a new unsymmetrical hybrid ferrocenylphosphine-phosphoramidite ligand, and the presence of an N-H proton in the ligand was demonstrated to have a crucial role in the enantioselectivity.
Highly effective chiral ortho-substituted BINAPO ligands (o-BINAPO): Applications in Ru-catalyzed asymmetric hydrogenations of β-aryl-substituted β-(acylamino)acrylates and β-keto esters
Zhou, Yong-Gui,Tang, Wenjun,Wang, Wen-Bo,Li, Wenge,Zhang, Xumu
, p. 4952 - 4953 (2007/10/03)
A novel family of chiral ortho-substituted BINAPO ligands (o-BINAPO) were synthesized from BINOL, and their Ru complexes were highly efficient catalysts for asymmetric hydrogenation of β-aryl-substituted β-(acylamino)acrylates and β-aryl-substituted β-keto esters. The Ru-bisphosphinite catalysts can tolerate an E/Z mixture of β-aryl-substituted β-(acylamino)acrylates. These highly enantioselective hydrogenations provide a useful way to prepare β-aryl-substituted β-amino acids and β-hydroxyl acids. Copyright