Process for production of amides
CA 1183551 A · Owner: Stauffer Chemical Company · Inventors: Gless, Richard D. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PROCESS FOR PRODUCTION OF ? HALOALKYLAMIDES Abstract of the Disclosure, Amides having the formula RCCNR2R3, in which R is ?-halo-C1-C8-alkyl; R2 is C1-C8 alkyl and R3 is C1-C8, alkyl, are prepared by reacting an ester with an amine in the presence of a promoter which is a halide of a Group IIIa metal having a molecular weight of 26 or greater, or of a Group IVb metal. The process is particulaly suitable for production of a desired optical isomer of such an amide.
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 March 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2002.
- 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.