Process for the preparation of benzoic acid derivatives having antimicrobial activity
CA 1254226 A · Owner: Societe Anonyme Styled: Sanofi · Inventors: Filhol, Robert; Demarne, Henri; Mosse, Madeleine
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention concerns a process for the preparation of benzoic acid derivatives with the general formula: (I), in which:, A represents a straight or branched alkyl chain with 5 to 7 carbon atoms, X represents the oxygen atom or a direct bond R represents hydrogen or an alkyl group with 2 to 6 carbon atoms, possibly substituted by an alcohol function, with the proviso that if R is H and A is a neopentyl group, X is a direct bond, and the salts of the said derivatives. The compounds possess antimicrobial activity. This process consists of: (1) subjecting the compound of formula IV to catalytic hydrogenation:, (IV), in which X and A are as defined above to form the corresponding aniline …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 16, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 16, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.