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

US6492541B2 · kind B2 · utility

Assignee

• Degussa-Huels AG · DE

Inventors

• Karlheinz Drauz · Alzenau, DE
• Gunter Knaup · Bruchköbel, DE
• Michael Schwarm · Alzenau, DE

Key dates

• Filing date: Dec 7, 2001
• Grant date: Dec 10, 2002
• Expiry date: Dec 7, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/55
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the preparation of &ggr;-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.