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Título : Stereoselective synthesis of syn β-hydroxy cycloalkane carboxylates: transfer hydrogenation of cyclic β-keto esters via dynamic kinetic resolution
Autor : Ros, Abel, Magriz, Antonio, Dietrich, Hansjörg, Lassaletta, José M., Fernández, Rosario
Palabras clave : Asymmetric catalysis
β-Hydroxy esters
Dynamic kinetic resolution
Transfer hydrogenation
Fecha de publicación : 21-May-2007
Editor: Elsevier
Citación : Tetrahedron 63(32): 7532-7537 (2007)
Resumen: The transfer hydrogenation of bicyclic and monocyclic β-keto esters using HCO2H/Et3N as the hydrogen source and TsDPEN-based Ru(II) catalysts proceeds with dynamic kinetic resolution to afford the corresponding cyclic β-hydroxy esters with moderate to excellent levels of diastereo- and enantioselectivities. The mild reaction conditions used make possible to preserve in most cases the synrelative configuration of the products, providing a complementary tool to known approaches to the synthesisof anti isomers.
Descripción : 6 páginas, 1 tabla, 3 esquemas.
Versión del editor:
ISSN: 0040-4020
DOI: 10.1016/j.tet.2007.05.058
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