2-oxo-1-pyrrolidine derivatives, process for preparing them...

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C548S541000, C548S543000, C502S150000

Reexamination Certificate

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06969770

ABSTRACT:
The invention concerns 2-oxo-1-pyrrolidine derivatives and a process for preparing them and their uses. The invention also concerns a process for preparing α-ethyl-2-oxo-1-pyrrolidine acetamide derivatives from unsaturated 2-oxo-1-pyrrolidine derivatives. Particularly the invention concerns novel intermediates and their use in methods for the preparation of S-α-ethyl-2-oxo-1-pyrrolidine acetamide.

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