Process for the resolution of zopiclone and intermediate...

Details Process for the resolution of zopiclone and intermediate... Process for the resolution of zopiclone and intermediate...

C - Chemistry, Metallurgy

07

B

C07B 57/00 (2006.01) C07D 487/04 (2006.01)

Patent

CA 2695254

The present invention refers to a process for the resolution into one of its enantiomers of the racemate of compound of formula (I): which comprises separating said one of its enantiomers from a diastereoisomeric salt of formula (II), which is formed by reaction of the racemic mixture with an optically active acetylated amino acid of formula (III). The invention also refers to new intermediates which are useful to carry out the process of the invention.

La présente invention porte sur un procédé pour la résolution en l'un de ses énantiomères du racémate du composé de formule (I). Ce procédé comprend la séparation de l'un de ses énantiomères à partir d'un sel diastéréoisomère de formule (II), qui est formé par réaction du mélange racémique avec un acide aminé acétylé optiquement actif de formule (III). L'invention porte également sur de nouveaux intermédiaires qui sont utiles pour la mise en uvre du procédé de l'invention.

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