Process for producing 2-hydroxy-4-methyltetrahydropyran
CA 1279326 C · Owner: Tokitoh, Yasuo · Inventors: Tokitoh, Yasuo; Yoshimura, Noriaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the hydroformylation of 3-methyl-3-buten-1-ol with hydrogen and carbon monoxide which, when carried out under relatively mild conditions gives 2-hydroxy-4-methyltetrahydropyran (MHP) at a high rate of reaction and with high selectivity even at a very low rhodium catalyst concentration. The reaction is carried out in the presence of a rhodium compound as a catalyst and a tris (substituted aryl) phosphite of defined electronic and stearic parameters. MHP is useful as a starting material for the production of 3-methyl-1,5-pentanediol and .beta.-methyl-.delta.-valerolactone which are in turn usable as raw materials for producing polyesters and polyurethanes. The process …
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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 January 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 2008.
- 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.