B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 31/02 (2006.01) B01J 14/00 (2006.01) C07B 37/04 (2006.01) C07B 63/04 (2006.01) C07C 5/03 (2006.01) C07C 45/50 (2006.01) C07D 213/20 (2006.01) C07D 233/54 (2006.01)
Patent
CA 2697002
An additive for improving the rate of catalysis in biphasic reaction systems is disclosed. The additive is an ionic molecule comprising an organic cation such as a heterocyclic compound or a quaternary ammonium or phosphonium cation, and an anion which may be organic or inorganic. A process for improved catalysis in an aqueous biphasic system wherein the catalyst is substantially dissolved in the aqueous phase and the substrate is substantially contained in the non- aqueous phase is also described. A suitable additive is 1-octyl-3-methylimidazolium halide. Examples of suitable catalytic reactions include the hydrogenation, hydrosilation, hydroboration, hydrovinylation, hydroformylation, oxidation and hydroxycarbonylation of alkenes, and Heck, Suzuki, Stille, and Sonigashira coupling.
L'invention concerne un additif destiné à améliorer le taux de catalyse dans des systèmes de réaction biphasique. Cet additif consiste en une molécule ionique qui comprend un cation organique tel qu'un composé hétérocyclique ou un cation d'ammonium ou de phosphonium quaternaire, et un anion pouvant être organique ou minéral. L'invention concerne également un procédé destiné à améliorer la catalyse dans un système biphasique aqueux, dans lequel la catalyse est sensiblement dissolue dans la phase aqueuse et le substrat sensiblement contenu dans la phase non aqueuse. Un additif approprié consiste en un halogénure de 1-octyle-3-méthylimidazolium. Parrmi les exemples de réactions catalytiques appropriées, on peut citer l'hydrogénation, l'hydrosilation, l'hydroboration, l'hydrovinylation, l'hydroformylation, l'oxidation et l'hydroxycarbonylation d'alcènes, et le couplage d'Heck, de Suzuki, de Stille, et de Sonigashira.
Cole-Hamilton David
Desset Simon Laurent
Gowling Lafleur Henderson Llp
The University Court Of The University Of St Andrews
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