810670-03-2Relevant articles and documents
Nickel-catalyzed enantioselective hydrogenation of β-(acylamino)acrylates: Synthesis of chiral β-amino acid derivatives
Li, Xiuxiu,You, Cai,Li, Shuailong,Lv, Hui,Zhang, Xumu
supporting information, p. 5130 - 5133 (2017/11/06)
The nickel-catalyzed asymmetric hydrogenation of β-(acylamino)acrylates has been developed, affording chiral β-amino acid derivatives with excellent yields (95-99% yield) and enantioselectivities (97-99% ee). With the Ni-Binapine system, high enantioselectivities (98-99% ee) have also been obtained in the hydrogenation of Z/E isomeric mixtures of β-alkyl and β-aryl β-(acylamino)acrylates. The synthesis of chiral β-amino acid derivatives on a gram scale has also been achieved with 0.2 mol % catalyst loading.
Highly efficient iridium-catalyzed asymmetric hydrogenation of unprotected β-enamine esters
Hou, Guohua,Zhang, Xumu,Li, Wei,Ma, Miaofeng,Zhang, Xiaowei
supporting information; experimental part, p. 12844 - 12846 (2010/11/05)
A highly efficient and enantioselective hydrogenation of unprotected β-enamine esters catalyzed by Ir-(S,S)-f-Binaphane complex has been developed. This methodology provides straightforward access to free β-amino acids in high yields with excellent enantioselectivities up to 97% ee and high reactivities (TON > 5000).
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.