Process for preparing optically active carboxylic acids

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 51/285 (2006.01) C07C 53/19 (2006.01) C07C 57/30 (2006.01) C07C 57/58 (2006.01) C07C 59/64 (2006.01) C07C 59/84 (2006.01) C07D 209/46 (2006.01) C07D 333/24 (2006.01) C07D 487/04 (2006.01)

Patent

CA 2234983

This invention relates to a process for preparing optically active carboxylic acids by oxidizing an optically active aldehyde with a peracid in the presence of an amine and/or amine N-oxide catalyst selected from the group consisting of a substituted or unsubstituted alkyl amine, alkyl amine N-oxide, aromatic amine, aromatic amine N-oxide, heterocyclic amine, heterocyclic amine N-oxide and mixtures thereof, to produce the optically active carboxylic acid. Such optically active carboxylic acids have utility for example as pharmaceuticals.

La présente invention concerne un procédé pour préparer des acides carboxyliques optiquement actifs par oxydation d'un aldéhyde optiquement actif avec un peracide en présence d'une amine et/ou d'un catalyseur au N-oxyde d'amine choisi dans le groupe composé d'une alkylamine substituée ou non substituée, d'un N-oxyde d'alkylamine, d'une amine aromatique, d'un N-oxyde d'amine aromatique, d'une amine hétérocyclique, d'un N-oxyde d'amine hétérocyclique et de leurs mélanges, en vue de produire l'acide carboxylique optiquement actif. De tels acides carboxyliques optiquement actifs sont utiles par exemple comme produits pharmaceutiques.

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