作者: Kristina Hallman , Emmanuel Macedo , Kerstin Nordström , Christina Moberg
DOI: 10.1016/S0957-4166(99)00416-4
关键词: Catalysis 、 Polystyrene 、 Enantioselective synthesis 、 Polymer chemistry 、 Palladium 、 Carboxylic acid 、 Organic chemistry 、 Dimethyl malonate 、 Monomer 、 Tsuji–Trost reaction 、 Chemistry
摘要: Abstract Chiral 2′-(4″,5″-dihydro-2″-oxazolyl)-6′-(1-hydroxyalkyl)pyridines were grafted via ester-linkages directly to cross-linked polystyrene and polyethyleneglycol-containing resins TentaGel ArgoGel functionalized with carboxylic acid groups or spacers containing a group. The polymeric ligands used in the palladium-catalyzed substitution of rac-1,3-diphenyl-2-propenyl acetate dimethyl malonate. enantioselectivities (up 80% ee) similar those observed employing an analogous monomeric catalyst.