Metathesis method for purifying starting products

Details Metathesis method for purifying starting products Metathesis method for purifying starting products

C - Chemistry, Metallurgy

07

C

C07C 6/04 (2006.01) C07B 37/06 (2006.01)

Patent

CA 2598585

The invention relates to a method for producing a compound or a mixture of a non-aromatic C-C-double bond or C-C-triple bond compounds (compound A) from another compound or a mixture of other non-aromatic C-C-double bond or C-C- triple bond compounds (compound B) comprising I. a step (I) which consists in removing impurities from the compound (B) by bringing said impurities into contact with an adsorption agent containing at least 3 % by weight aluminium oxide and by activating them at temperatures ranging from 450 to 1000 ~C (adsorption agent X) and II. a step (II) consisting in removing the impurities from the compound (B) according to the step (I) and in bringing said compound (B) into contact with a metathesis catalyst under usual conditions of a metathesis reaction.

Procédé de production d'un composé ou d'un mélange de composés à double liaison C-C non aromatique ou à triple liaison C-C (composé A), à partir d'un autre composé ou d'un mélange d'autres composés ayant une double liaison C-C non aromatique ou une triple liaison C-C (composé B), procédé caractérisé en ce que I. dans une étape (I), le composé (B) est débarrassé des impuretés en les mettant en contact avec un agent d'adsorption renfermant au moins 3 % en poids d'oxyde d'aluminium, et en activant à des températures de 450 à 1000 °C (agent d'adsorption X), et en ce que II. dans une étape (II), le composé B débarrassé des impuretés conformément à l'étape (I) est mis en contact avec un catalyseur de métathèse, dans les conditions habituelles pour des réactions de métathèse. .

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