Process for the preparation of 2,6-dichlorodiphenylaminoacetic acid derivatives

US4978773A · kind A · utility

Assignee

• Heumann Pharma GmbH · DE

Inventors

• Ingomar Grafe · Nürnberg, DE
• Helmut Schickaneder · Eckental, DE
• Kurt H. Ahrens · Nürnberg, DE

Key dates

• Filing date: Jun 21, 1989
• Grant date: Dec 18, 1990
• Expiry date: Jun 21, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C229/42
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A new process for the preparation of 2,6-dichlorodiphenylamine derivatives is described, which process provides the desired active compound in a high yield and with a very high degree of purity by a technically simple and realizable procedure.