Process for the production of 1,5-naphthalenediamine

US6706924B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Michael Schelhaas
• Katrin Joschek
• Manfred Jautelat · Burscheid, DE
• Joachim Zechlin · Neuss, DE
• Dietmar Wastian · Dormagen, DE

Key dates

• Filing date: Dec 18, 2001
• Grant date: Mar 16, 2004
• Expiry date: Jul 15, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2602/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the production of 1,5-naphthalenediamine and to the intermediates 4-(2-nitrophenyl)butyronitrile, 5-nitro-3,4-dihydro-1(2H)-naphthyl-imine, 5-nitroso-1-naphthylamine, 5-nitro-1-naphthylamine, 4-(2-aminophenyl)-butyronitrile, 5-amino-3,4-dihydro-1(2H)-naphthalene imine, 4-(2-nitrophenyl)ethyl butyrate and 4-(2-nitrophenyl)butyramide obtainable during the process.