Preparation of diacetone-ketogulonic acid

US4375393A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Fritz Reiff · Seeheim-Jugenheim, DE
• Willi Wintermeyer · Seeheim-Jugenheim, DE
• Rolf Wittmann
• Jurgen Butzke · Dieburg, DE
• Peter Muller · Leverkusen, DE

Key dates

• Filing date: May 26, 1981
• Grant date: Mar 1, 1983
• Expiry date: May 26, 2001

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2311/2684
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for preparing diacetone-ketogulonic acid comprises oxidizing diacetonesorbose to diacetone-ketogulonic acid to an extent of about 30-95% by electrochemical oxidation or O.sub.2 oxidation; electrodialysing the resultant reaction solution to separate the pure diacetoneketogulonic acid from the unoxidized diacetonesorbose; and recycling the unoxidized diacetone-sorbose to the oxidation step.