Enantioselective allylic alkylation using polymer-supported palladium catalysts

作者: Kristina Hallman , Emmanuel Macedo , Kerstin Nordström , Christina Moberg

DOI: 10.1016/S0957-4166(99)00416-4

关键词: CatalysisPolystyreneEnantioselective synthesisPolymer chemistryPalladiumCarboxylic acidOrganic chemistryDimethyl malonateMonomerTsuji–Trost reactionChemistry

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.

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