Production of butane tetracarboxylic acid derivatives by...

C - Chemistry – Metallurgy – 07 – C

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C07C 51/353 (2006.01) C07C 55/24 (2006.01) C07C 67/00 (2006.01) C07C 231/12 (2006.01) C07C 233/18 (2006.01) C07D 307/32 (2006.01) C25B 3/00 (2006.01) C25B 3/04 (2006.01) C25B 3/10 (2006.01)

Patent

CA 2429542

The invention relates to a method for producing butane tetracarboxylic acid derivatives as a product of value I by coupled electrosynthesis. A compound from the group comprising the maleic acid esters, maleic acid ester derivatives, fumaric acid esters or fumaric acid ester derivatives is selected. At least one hydrogen atom in positions 2 and 3 is substituted by inert groups, is cathodically reduced and a product of value II is obtained on the anode.

La présente invention concerne un procédé de production de dérivés d'acide butane-tétracarboxylique, sous forme de produit de valeur I, au moyen d'une électrosynthèse couplée. Selon ce procédé, un composé choisi dans le groupe formé par les esters d'acide maléique, les dérivés d'ester d'acide maléique, les esters d'acide fumarique ou les dérivés d'ester d'acide fumarique, dans lequel au moins un atome d'hydrogène en positions 2 et 3 peut être substitué par des groupes inertes, subit une réduction cathodique et un produit de valeur II est obtenu à l'anode.

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