Process for the preparation of nitroanilines

US4421694A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Bruno Kruger · Leverkusen, DE
• Adolf Winkler · Leverkusen, DE
• Gunter Hentze · Odenthal, DE

Key dates

• Filing date: Jan 20, 1982
• Grant date: Dec 20, 1983
• Expiry date: Jan 20, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C255/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the preparation of nitroanilines by the reaction of chloronitrobenzenes with ammonia at elevated temperature and under elevated pressure, and in the presence of chlorinated aromatic hydrocarbons. Nitroanilines are important precursors and intermediate products for the preparation of dyestuffs, pharmaceuticals and plant protection agents.