Abstract
Abstract Polymer-supported Pd(AAEMA)2 (Pd-pol) [AAEMA−: deprotonated form of 2-(acetoacetoxy)ethyl methacrylate] in the presence of chiral ligands catalyses the asymmetric substitution of rac-1,3-diphenyl-2-propenyl acetate with dimethyl malonate. A series of conventional ligands were tested: the enantioselectivities (up to 93% ee) were similar to those observed employing the analogous homogeneous catalyst or a classical soluble palladium complex. In some case the supported catalyst was used in two subsequent runs with only a slight loss of activity and selectivity.
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