期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 69, 期 23, 页码 8157-8160出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo049146x
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New monodentate chiral phosphonites were synthesized from enantiomerically pure 1,1'-spirobiindane7,7'-diol. The phosphonites 2 were efficient ligands for the Rh-catalyzed asymmetric hydrogenation of alpha- and beta-dehydroamino acid derivatives, providing the amino acids in high enantioselectivities. The study of electronic effect showed that the electron-withdrawing substitutent on the P-phenyl ring of the phosphonite ligand dramatically decreased both the reactivity and enantioselectivity of the ligand.
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