Vitamin a preparation process

C - Chemistry – Metallurgy – 07 – C

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260/395.5

C07C 403/08 (2006.01) A61K 31/07 (2006.01) B01J 31/24 (2006.01) C07B 61/00 (2006.01) C07C 35/18 (2006.01)

Patent

CA 1312872

BREVET D'INVENTION PROCEDE DE PREPARATION DE LA VITAMINE A RHONE-POULENC SANTE ABREGE Procédé de préparation de la vitamine A pratiquement exempte d'isomère 2-cis et 6-cis par hydrogénation de l'aldéhyde de la vitamine A éventuellement sous forme de complexe avec l'hydro- quinone en présence d'un hydrure de ruthénium comme catalyseur.

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