Method for the synthesis of heterogeneous palladium...

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B01J 31/24 (2006.01) B01J 31/16 (2006.01) C07F 9/50 (2006.01)

Patent

CA 2684359

The invention relates to the field of chemistry, especially organic chemistry, and more specifically the field of heterogeneous palladium catalysts used to catalyse chemical reactions involving the formation of carbon-carbon bonds. The invention also relates to a method for synthesising a heterogeneous palladium catalyst that can catalyse a C-C coupling reaction, said method essentially comprising steps of providing a solid substrate onto which groups of formula -PR1R2, wherein R1 is an optionally substituted alkyl group, or an optionally substituted cycloalkyl group, et R2 is an optionally substituted aryl group or an optionally substituted heteroaryl group, have been covalently bonded, and incorporating a catalytically effective amount of palladium into the resulting substituted substrate. The invention further relates to the resulting catalysts and to the uses thereof in C-C coupling reactions.

La présente invention concerne le domaine de la chimie, en particulier de la chimie organique et plus particulièrement le domaine des catalyseurs hétérogènes au palladium qui sont utilisés pour catalyser des réactions chimiques impliquant la formation de liaisons carbone-carbone. Elle a pour objet un procédé de synthèse d'un catalyseur hétérogène au palladium susceptible de catalyser une réaction de couplage C-C, comprenant les étapes consistant essentiellement à mettre à disposition un support solide sur lequel on a fixé de façon covalente des groupements de formule -PR1R2, dans laquelle R1 représente un groupement alkyle, éventuellement substitué,ou cycloalkyle,éventuellement substitué, et R2 représente un groupement aryle,éventuellement substitué, ou un groupement hétéroaryle,éventuellement substitué,et à incorporer une quantité catalytiquement efficace de palladium dans ledit support ainsi substitué. Elle a également pour objet les catalyseurs obtenus et les utilisations desdits catalyseurs dans des réactions de couplage C-C.

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