Use of organic derivatives of rhenium oxides as catalysts for ethenolytic metathesis of olefinic compounds and process for ethenolytic metathesis of olefinic compounds using thesecatalysts

Abstract From the Canadian patent

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 …