COLL 543 |
| Philippe Sautet, Laboratoire de Chimie, Laboratoire de Chimie, Ecole Normale Supérieure de Lyon, 46 Allee d'Italie, 69364 Lyon Cedex 07, France |
| The adsorption of chiral molecules at metallic surfaces will be presented on the basis of density functionnal theory calculations. There are two main strategies in order to induce enantioselectivity on a heterogeneous catalyst. The first one is to adsorb a chiral modifier on the surface. The adsorption of tartaric acid has been studies on a Cu(110) surface. These molecules form "chiral" extended domains on the surface and the calculations allow to understand the origin of this asymmetric packing. The second strategy consist in grafting a chiral auxiliary on the reactant molecule. We will show how asymmetric hydrogenation of o-toluic acid and derivatives can be reached by this technique. |
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Chiral Surfaces
Division of Colloid and Surface Chemistry |