Catalytic hydrogenation of ketones and aldehydes
CA 2408412 A1 · Owner: Brookhaven Science Associates · Inventors: Hauptman, Elisabeth M.; Schlaf, Marcel; Fagan, Paul Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ketones and aldehydes are hydrogenated to the corresponding alcohol of alkyl group, using H2 gas as the stoichiometric reductant and a ruthenium- or iron-, containing catalyst precursor having the formula {CpM(CO)22(µ-H)}+Qwherein M is selected from the group consisting of Ru and Fe; Cp is an optionally substituted cyclopentadienyl group; and Q- is a non-coordinating or weakly coordinating non-reactive anion.
Read the whole patent
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 June 20, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 20, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2023.
- 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.