2002 reduction, hydrogenation

reduction, hydrogenationO 0220

17 - 050Derivatives of L-Pimaric Acid in the Synthesis of Chiral Organophos-phorus Ligands from Decahydrophenanthrene Series. — Amongthe three novel pimaric acid based diphosphine ligands [lig, (III)], the maleopi-maric acid based ligand can be successfully applied in the rhodium-catalyzedhydrogenation of dehydroamino acids (I). Optical purity of up to 37% e.e. isobtained, while the isomeric ligands (III) furnish the hydrogenation products asracemates. — (TOLSTIKOV, A. G.; KARPYSHEV, N. N.; TOLSTIKOVA,O. V.; KHLEBNIKOVA, T. B.; SAL’NIKOV, G. E.; MAMATYUK, V. I.;GATILOV, YU. V.; BAGRYANSKAYA, I. YU.; Russ. J. Org. Chem. 37 (2001)8, 1134-1148; Boreskov Inst. Catal., Sib. Branch Russ. Acad. Sci., Novosibirsk630090, Russia; EN)

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