Process for preparing carboxylic acid derivatives

Details Process for preparing carboxylic acid derivatives Process for preparing carboxylic acid derivatives

C - Chemistry, Metallurgy

07

C

C07C 67/03 (2006.01) C07C 67/56 (2006.01) C07C 69/54 (2006.01)

Patent

CA 2661571

The present invention relates to processes for preparing carboxylic acid derivatives, comprising the reaction of at least one carboxylic acid and/or of a carboxylic acid derivative with at least one alcohol and/or an amine in the presence of a metal-containing catalyst, wherein, after the reaction has ended, the metal-containing catalyst is contacted with water and a superabsorbent, the contacting of the catalyst with the water leading to hydrolysis of the catalyst. The present invention further relates to the use of superabsorbents for removing a metal-containing catalyst from a mixture after hydrolysis of the catalyst.

La présente invention concerne un procédé de fabrication de dérivés d'acide carboxylique, comprenant la réaction d'au moins un acide carboxylique et/ou d'un dérivé d'acide carboxylique avec au moins un alcool et/ou une amine en présence d'un catalyseur contenant un métal. Selon l'invention, à la fin de la réaction, le catalyseur contenant un métal est mis en contact avec de l'eau et un superabsorbant, la mise en contact du catalyseur avec l'eau conduisant à une hydrolyse du catalyseur. La présente invention concerne également l'utilisation de superabsorbants pour la séparation d'un mélange d'un catalyseur contenant un métal après une hydrolyse du catalyseur.

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