Process for the preparation of 5-hydroxymethylthiazoles
CA 2294089 A1 · Owner: Abbott Laboratories · Inventors: Allen, Michael S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses a process for the preparation of a hydroxymethylthiazole compound having formula (3). The process of the invention comprises reacting a halomethyl thiazole having formula (A) with water, at an elevated temperature. Optionally the reaction can be carried out , in the presence of a base such as sodium carbonate, which can react with any acid formed. In the process of the invention X is a halogen atom; and R6 is , selected from the group consisting of hydrogen and halogen atoms. The , invention also contemplates the preparation of acid addition salts of the hydroxymethylthiazole, compound (3).
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 August 18, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 18, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2020.
- 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.