Preparation of dihydroxycarboxylic esters in the absence of solvents

US6620964B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Martin Klatt · Bad Dürkheim, DE
• Markus Niebel · Mannheim, DE
• Melanie Erhardt · Wemding, DE

Key dates

• Filing date: Dec 2, 2002
• Grant date: Sep 16, 2003
• Expiry date: Dec 2, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/31
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A description is given of a process for preparing dihydroxycarboxylic esters and of an overall process for preparing R-(+)-&agr;-lipoic acid.