Process for producing aminodiphenylamines

US6316673A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Henry Giera · Wittlich, DE
• Torsten Pohl · Cambridge, US
• Uwe Hugger · Rellingen, DE
• Adolf Sicheneder · Hohenlockstedt, DE
• Fred Schuhmacher · Schenefeld, DE
• Adolf Brill · Brunsbüttel, DE

Key dates

• Filing date: Feb 2, 2001
• Grant date: Nov 13, 2001
• Expiry date: Feb 2, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C209/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to the production of aminodiphenyl-amines resulting in good yields and high purity levels when aromatic amines are reacted with nitrohalobenzenes in the presence of a palladium catalyst and a base and the product thus obtained is subsequently hydrogenated with hydrogen.