Electrochemical synthesis of 2-methyl-5-pyrezinoic acid
CA 1332156 C · Owner: Borsotti, Giampiero · Inventors: Forlini, Fabrizio; Gatti, Norberto; Borsotti, Giampiero
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a process for the preparation of 2-methyl-5-pyrazinoic acid consisting in oxidizing by electrochemical way a compound having formula: (I), wherein X is -OH, Cl, Br, -O-CO-R -O-SO2-R, in which R, is a C1-C5 alkyl radical optionally substituted with F or, Cl, or it is a C6-C12 aryl radical in an aqueous alkaline, medium, at a temperature ranging from 20°C to 90°C by using, anodes coated with nickel oxide-hydroxide.
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
- Granted September 27, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 27, 2011.
- 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.