Preparation of R/S-.gamma.-lipoic acid or R/S-.alpha.-lipoic acid

US5489694A · kind A · utility

Assignee

• BASF SE

Inventors

• Joachim Paust · Schifferstadt, DE
• Peter Eckes · Kelkheim, DE
• Wolfgang Siegel · Schifferstadt, DE
• Friedhelm Balkenhohl · Schifferstadt, DE
• Walter Dobler · Schwetzingen, DE
• Michael Hullmann · Bensheim, DE

Key dates

• Filing date: Jul 25, 1994
• Grant date: Feb 6, 1996
• Expiry date: Jul 25, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D339/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing R/S-.gamma.-lipoic acid of the formula I or R/S-.alpha.-lipoic acid of the formula II ##STR1## is disclosed.