A process for production of high-purity enamines

C - Chemistry – Metallurgy – 07 – C

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C07C 209/60 (2006.01) C07C 211/21 (2006.01)

Patent

CA 2493390

[Subject] To provide a method for producing highly pure enamines. [Measures to solve the subject] A method for producing highly pure enamines, which comprises a step of reacting an aldehyde or ketone with an amine and a step of treating the resulting reaction mixture with an acidic aqueous solution at between 0°C and 30°C.

L'invention concerne une méthode de production de composés de grande pureté représentés par la formule générale (3), dans laquelle R?1¿ est alkyle C¿1-6? ou analogue ou R?2¿ est hydrogène ou analogue, ou R?1¿ et R?2¿ peuvent former ensemble alkylène C¿1-6?; et R?3¿ et R?4¿ sont chacun alkyle C¿1-6? ou analogue. La méthode consiste à mettre en réaction un composé de formule générale (1), dans laquelle R?1¿ et R?2¿ sont tels que définis plus haut, avec un composé de formule générale (2), dans laquelle R?3¿ et R?4¿ sont tels que définis plus haut. La méthode consiste ensuite à traiter le mélange réactionnel obtenu avec de l'eau acide, à une température de 0 à 30 ·C.

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