On the enantioselective hydrogenation of isomeric β-acylamido β-alkylacrylates with chiral Rh (I) complexes—comparison of phosphine ligands and substrates

…, I Komarov, HJ Drexler, J You, K Drauz, A Börner

Index: Heller, Detlef; Holz, Jens; Komarov, Igor; Drexler, Hans-Joachim; You, Jingsong; Drauz, Karheinz; Boerner, Armin Tetrahedron Asymmetry, 2002 , vol. 13, # 24 p. 2735 - 2741

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Citation Number: 33

Abstract

The rhodium (I)-catalyzed enantioselective hydrogenation of E-and Z-configured β- acylamido β-alkylacrylates as well as of isomeric mixtures has been investigated. As ligands 1, 2-bisphospholanes like DuPHOS, BPE and Me4-BASPHOS have been tested, but also diphosphines forming seven-membered chelates such as DIOP. The effect of additional oxy groups in the diphosphine ligand on rate and enantioselectivity was likewise elucidated. ...

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