title: Intramolecular anion effect in polyoxometalate-based organocatalysts: reactivity enhancement and chirality transfer by a metal oxide-organic cation interaction.
abstract: An α1 -Dawson polyanion bearing a lateral side chain with a 4-aminopyridine end group was synthesized. This organopolyoxometalate catalyzes the addition of indenyl allyl silanes to cinnamoyl fluorides. The polyanionic framework influences the organocatalyst activity and selectivity. A moderate but nonzero chirality transfer from the chiral inorganic framework to the organic substrate was observed.
authors.affiliation: Institut Parisien de Chimie Moléculaire (UMR CNRS 7201), UPMC Univ Paris 06, 4 Place Jussieu, 75005 Paris (France).
authors.forename: Christian
authors.initials: C
authors.lastname: Brazel
authors.forename: Nathalie
authors.initials: N
authors.lastname: Dupré
authors.forename: Max
authors.initials: M
authors.lastname: Malacria
authors.forename: Bernold
authors.initials: B
authors.lastname: Hasenknopf
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Lacôte
authors.forename: Serge
authors.initials: S
authors.lastname: Thorimbert
keywords: acylation; chirality; organocatalysis; polyanions; polyoxometalates