Process for preparing gabapentin

Details Process for preparing gabapentin Process for preparing gabapentin

C - Chemistry, Metallurgy

07

C

C07C 217/44 (2006.01) C07C 227/18 (2006.01) C07C 229/28 (2006.01) C07C 253/30 (2006.01) C07C 255/46 (2006.01) C07D 317/28 (2006.01) C07D 317/30 (2006.01)

Patent

CA 2660769

A process for preparing gabapentin of formula 1, which comprises Formula (I) converting 1-allyl-cyclohexanecarboxaldehyde into 1-allyl-cyclohexanecarbonitrile; ozonizing 1-allyl-cyclohexanecarbonitrile to obtain 1-cyano-cyclohexaneacetaldehyde; acetalizing 1-cyano-cyclohexaneacetaldehyde with a suitable acetalizing agent to give the corresponding acetal and converting the latter into gabapentin.

La présente invention concerne un procédé de préparation de la gabapentine de formule 1, qui comprend (Formule (I)) la conversion de 1-allyl-cyclohexanecarboxaldéhyde en 1-allyl-cyclohexanecarbonitrile; l'ozonisation de 1-allyl-cyclohexanecarbonitrile pour obtenir 1-cyano-cyclohexaneacetaldéhyde; l'acétalisation de 1-cyano-cyclohexaneacetaldéhyde au moyen d'un agent acétalisant approprié pour donner l'acétal correspondant et convertir ce dernier en gabapentine.

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