Use of organic derivatives of rhenium oxides as catalysts...

Details Use of organic derivatives of rhenium oxides as catalysts... Use of organic derivatives of rhenium oxides as catalysts...

C - Chemistry, Metallurgy

07

C

C07C 6/04 (2006.01) B01J 31/12 (2006.01) C07C 6/06 (2006.01) C07C 11/00 (2006.01) C07C 13/11 (2006.01) C07C 15/50 (2006.01) C07C 45/67 (2006.01) C07C 49/203 (2006.01) C07C 67/333 (2006.01) C07C 69/533 (2006.01)

Patent

CA 2079211

Use of compounds of formula R1aRebOc (I), in which a is 1 to 6, b is 1 to 4 and c is 1 to 14 and the sum of a, b and c is such that it satisfied rhenium in its 5- or 7- valency states, with the proviso that c is not greater than 3b, and in which R1 is an alkyl radical with 1 to 9 carbon atoms, a cycloalkyl radical with 5 to 10 carbon atoms or an aralkyl radical with 7 to 9 carbon atoms, where R1 may be at least partially fluorinated, the compounds do not contain more than three groups with more than 6 carbon atoms per rhenium atom and at least one hydrogen atom is bonded to the carbon atom in the .alpha.-position, which are applied to oxidic support materials, as catalysts for the ethenolytic metathesis of olefinic compounds.

Utilisation de composés de formule R1aRebOc (I), dans laquelle a est 1 à 6, b est 1 à 4 et c est 1 à 14; la somme de a, b et c fait que le rhénium possède la valence 5 ou 7, à la condition que c ne soit pas plus grand que 3b; R1 est un radical alkyle de 1 à 9 atomes de carbone, un radical cycloalkyle de 5 à 10 atomes de carbone ou un radical aralkyle de 7 à 9 atomes de carbone; de plus, R1 peut être au moins partiellement fluoré; ces composés ne renferment pas plus que trois groupes de plus de 6 atomes de carbone par atome de rhénium, et au moins un atome d'hydrogène est lié à l'atome de carbone en position alpha; lesdits composés sont appliqués sur des supports oxydants, comme catalyseurs pour la métathèse éthénolytique de produits oléfiniques.

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