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Michael reactions carried out using a bench-top flow system

Bonfils F., Cazaux I., Hodge P., Caze C.. 2006. Organic and Biomolecular Chemistry (3) : p. 493-497.

The Michael reaction between methyl 1-oxoindan-2-carboxylate and methyl vinyl ketone was achieved successfully by pumping solutions of the reactants in toluene through a fluid bed of Amberlyst A21 at 50 °C. The use of a fluid bed reactor is attractive as it allows gel-type beads, i.e. the type of bead used in most studies of polymer-supported (PS) organic reactions, to be used satisfactorily in a flow system. When polymer-supported cinchonidine was used in place of Amberlyst A21, the Michael product was obtained in high yield with an enantiomeric excess (ee) of 51%. This % ee is comparable to that achieved when the reaction was catalysed by cinchonidine itself. (Résumé d'auteur)

Thématique : Autres thèmes; Traitement des produits agricoles non alimentaires

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