Catalysis Letters, Vol.101, No.3-4, 195-199, 2005
New, efficient, heterogenized catalysts for asymmetric hydrogenation of dehydroamino acid derivatives
New, efficient and highly active Rh complexes have heterogenized and applied in the asymmetric hydrogenation of (Z)-α-acetamidocinnamic acid and its methyl ester. The prepared catalysts show excellent activity and selectivity, similar to the homogeneous analogs and at the same time they show all the advantages of the heterogeneous catalysts: the easy handling, the possibility to filter out from the reaction mixture and to reuse in several subsequent runs.