Process for the preparation of 2-(4-isobutylphenyl)-propiohydroxamic acid
CA 1062728 A · Owner: Societa Italo-Britannica L. Manetti-H. Roberts And C. · Inventors: Orzalesi, Giovanni; Selleri, Renato
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the preparation of 2-(4-isobutylphenyl)propiohydroxamic acid comprises the steps of forming a mixture of 2-(4-isobutylphenyl)-propionitrile as a starting compound and anhydrous methanol. The mixture, is saturated with dry hydrochloric gas under cooling, reacted and the reaction product diluted by ethyl ether, whereby a precipitate is formed. The precipitate is reacted with a mixture of a methanol solution of hydroxylamine hydrochloride and a sodium hydroxide solution under stirring, and the reaction product diluted with water and the desired compound precipitated by carbon dioxide.
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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 September 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 18, 1996.
- 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.