Process for preparing vanillylamine hyrochloride

Details Process for preparing vanillylamine hyrochloride Process for preparing vanillylamine hyrochloride

C - Chemistry, Metallurgy

07

C

C07C 217/58 (2006.01)

Patent

CA 2461574

Process for preparing vanillylamine or one of the salts thereof by a) reacting vanillin with hydroxylamine or the salts thereof in the presence of an organic salt, which may optionally be produced in situ, and b) subsequently hydrogenating the resulting vanillyloxime with hydrogen in the presence of a suitable catalyst and an organic and/or inorganic acid, characterised in that step a) is carried out in an inorganic or organic acid as diluent.

L'invention concerne un procédé de production de vanillylamine ou d'un de ses sels par : a) mise en réaction de vanilline avec de l'hydroxylamine ou avec les sels de celle-ci, en présence d'un sel organique qui, éventuellement, peut être produit in situ ; et b) hydrogénation consécutive de la vanillyloxime produite avec de l'hydrogène, en présence d'un catalyseur approprié et d'un acide organique et/ou d'un acide inorganique. Ce procédé se caractérise en ce que l'étape a) est réalisée dans un acide inorganique ou dans un acide organique servant de diluant.

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