Catalytic preparation process of n-acylglycine derivatives
CA 2261853 A1 · Owner: Vollmuller, Frank · Inventors: Geissler, Holger; Eckert, Markus; Beller, Matthias
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing N-acylglycine derivatives of general formula (III) is characterised in that a carboxylic acid amide of general formula (II) is carbonylated with an aldehyde of formula RCHO in the presence of a solvent and of a mixture comprising a palladium compound an ionic halogenide and an acid , which acts as a catalyst at a temperature from 20-200 ~C and under a COpressure from 1-150 bars.
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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
- Filed July 18, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2019.
- 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.