Process for producing carbamazepine

US7015322B1 · kind B1 · utility

Assignee

• Degussa AG · DE

Inventors

• Rudolf Eckardt · Wesel, DE
• Hans-Joachim Jansch · Radebeul, DE

Key dates

• Filing date: Nov 23, 1999
• Grant date: Mar 21, 2006
• Expiry date: Nov 23, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D223/26
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention concerns a process for producing 5H-dibenz[b,f]azepine-5-carboxamide (carbamazepine) by reacting iminostilbene with an alkali cyanate in acetic acid or a mixture of acetic acid with water or with alcohol.