Process for the preparation of 3-amino-2-oxo-pyrrolidines, novel intermediates and their use

摘要

The present invention relates to a process for the preparation of gamma-lactams of the general formula I The invention relates also to novel advantageous intermediates of the general formulae V, IV and II and their salts and their use. The compounds of the general formula I are obtained by cyclising compounds of the general formula II which can be prepared from the intermediate compounds V.