Racemisation process for use in the manufacture of...

Details Racemisation process for use in the manufacture of... Racemisation process for use in the manufacture of...

C - Chemistry, Metallurgy

07

D

C07D 211/60 (2006.01)

Patent

CA 2208522

An optically-enriched piperidine-2-carboxanilide compound, in which the piperidine is optionally N-alkylated, is racemised by heating the compound in an aqueous medium, provided that the medium includes an organic cosolvent if the compound is N-alkylated. This process is particularly valuable, in conjuction with a resolution process, for the manufacture of levobupivacaine.

Racémisation d'un composé de pipéridine-2-carboxanilide enrichi optiquement, dans lequel la pipéridine est éventuellement N-alkylée, par chauffage de ce composé dans un milieu aqueux, à condition que le milieu renferme un cosolvant organique si le composé est N-alkylé. Ce procédé est particulièrement utile, en association avec un procédé de dédoublement, dans la fabrication de lévobupivacaïne.

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