Catalytic hydrogenation of nitriles to produce capsaicinoid...

C - Chemistry – Metallurgy – 07 – C

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C07C 233/05 (2006.01) A61K 31/165 (2006.01) C07C 209/48 (2006.01)

Patent

CA 2551128

Processes for preparing an amine compound by catalytically hydrogenating a precursor nitrile compound. In a particular aspect, the present hydrogenation process occurs in a dipolar organic solvent in the presence of a palladium/carbon catalyst and a strong anhydrous protic acid. In a further aspect, the preferred embodiment relates to a process for deprotecting a compound to produce an amine compound. In yet a further aspect, the preferred embodiment relates to amine products produced by the present processes. These amine products may be used for a variety of purposes.

L'invention concerne des procédés de préparation d'un composé d'amines par hydrogénation catalytique d'un composé nitrile précurseur. Dans un aspect particulier, le procédé d'hydrogénation de l'invention se déroule dans un solvant dipolaire organique en la présence d'un catalyseur au palladium/carbone et d'un acide protique anhydre fort. Dans un autre aspect, le mode de réalisation préféré concerne un procédé de déprotection d'un composé pour produire un composé d'amine. Dans encore un autre aspect, le mode de réalisation préféré concerne des produits d'amines produits par les présents procédés. Ces produits d'amines peuvent être utilisés à diverses fins.

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