Issue 11, 2003

A strongly positive dendrimer effect in asymmetric catalysis: allylic aminations with Pyrphos-palladium functionalised PPI and PAMAM dendrimers

Abstract

A remarkable and unprecedented increase in catalyst selectivity in dendrimer catalysis is observed for the Pyrphos-Pd catalysed allylic amination of 1,3-diphenyl-1-acetoxypropene as a function of the dendrimer generation (with up to 64 metal sites). This steady increase in ee-values for the allylic amination is less pronounced for the poly(propyleneimine)-derived catalysts than for the corresponding palladium-PAMAM dendrimer catalysts for which an increase in selectivity from 9% ee for a mononuclear reference system to 69% ee for the Pd64-dendrimer was found.

Graphical abstract: A strongly positive dendrimer effect in asymmetric catalysis: allylic aminations with Pyrphos-palladium functionalised PPI and PAMAM dendrimers

Supplementary files

Article information

Article type
Communication
Submitted
26 Feb 2003
Accepted
20 Mar 2003
First published
23 Apr 2003

Chem. Commun., 2003, 1228-1229

A strongly positive dendrimer effect in asymmetric catalysis: allylic aminations with Pyrphos-palladium functionalised PPI and PAMAM dendrimers

Y. Ribourdouille, G. D. Engel, M. Richard-Plouet and L. H. Gade, Chem. Commun., 2003, 1228 DOI: 10.1039/B302155F

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