Alkynols and process for their preparation
CA 1084516 A · Owner: Merck Patent Gesellschaft Mit Beschraenkter Haftung · Inventors: Simane, Zdenek; Gante, Joachim; Wild, Albrecht
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Alkynols of the formula wherain X ia F, Cl or Br; n is 0 or 1; m is 0 or 1 and R (if m is 0) is hydroxyalkyl of 1-6 carbon atoms or (if m is 1) alkyl straight-chain hydroxy alkyl or straight-chain tetrahydropyran- 2-yloxyalkyl of 2-6 carbon atoms in the alkyl have anti-, inflammatory activity. These compounda may be prepared by solvolyzing reactions on compounds of tho following formula (II), wherein Q is an functionally-modified hydroxyl and Z is alkyl of 1-6 carbon atoms in the alkyl, substituted by 0 when m, is 0, or is alkyl or alkyl substituted by 0 each of 2-6, carbon atoms in the alkyl when m is 1, wlth a solvolyzing, agent.
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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 August 26, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 1997.
- 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
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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.