Improved chichibabin aminations of pyridine bases

Details Improved chichibabin aminations of pyridine bases Improved chichibabin aminations of pyridine bases

C - Chemistry, Metallurgy

07

D

C07D 213/73 (2006.01) C07D 213/80 (2006.01) C07D 215/38 (2006.01) C07D 217/22 (2006.01)

Patent

CA 2193236

Improved Chichibabin aminations of pyridine bases are described which are conducted under a pressurized gas phase containing ammonia and in the presence of a selected additive which increases the reaction rate, and also in preferred processes favorably alters the isomer ratios and product yields from the aminations while benefiting product workup and recovery as well.

On décrit une amination améliorée des bases pyridiniques utilisant la méthode de Chichibabin, mise en oeuvre sous pression avec une atmosphère gazeuse contenant de l'ammoniac et en présence d'un additif sélectionné qui augmente la vitesse de réaction. Des conditions optimisées permettent de modifier d'une manière favorable les proportions d'isomères et les produits résultant de la réaction d'amination, tout en favorisant l'obtention et la récupération des produits.

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