Process for the preparation of enantiomerically enriched amino acids

US7728167B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Rolf Hoffmann · Brasschaat, BE
• Michael Kraft · Blaustein, DE

Key dates

• Filing date: Dec 9, 2004
• Grant date: Jun 1, 2010
• Expiry date: Jul 14, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C227/34
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention is concerned with the resolution of a mixture of enantiomers of N-protected amino acids by crystallization with enantiomerically pure N-unprotected β-amino acid derivatives.