Process for the resolution of zopiclone and intermediate...

Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...

Reexamination Certificate

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C544S360000, C546S268100

Reexamination Certificate

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07968712

ABSTRACT:
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.

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