Method of producing n-methyl-n-(3,4,5-trimethoxybenzyl)-2,3-dimethyl-2,4-pentadienamine
CA 1052794 A · Owner: Laboratorios Made, S.A. · Inventors: Cartes, Juan Bosch; Roldan, Cristobal Martinez; Peinado, Fernando Rabadan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of producing an anglgesic comprising N-methyl-N-(3,4,5-trimethoxybenzyl)- 2,3-dimethyl-2,4-pentadienamine having the formula: (I), characterized in that, in a first stage 3,4,5-trimethoxy-, benzyl chloride having the formula is caused to react with 1,3,4,-trimethyl-1,2,5,6-tetrahydropyridine having the formula, in a anhydrous solvent at the reflux temperature of the mixture, so that upon cooling there is obtained 1,3,4trimethyl-1-(3,4,5-trimethoxybenzyl)-1,2,5,6-tetrahydropyridine chloride having the formula:, (II) and thereafter the compound having the formula II is subjected to a Hofmann degradation reaction by prolonged boiling treatment with an aqueous solution of an alkaline …
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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 April 17, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 1996.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.