Production of 1-chloroanthraquinone

US3978096A · kind A · utility

Assignee

• BASF SE

Inventors

• Heinz Eilingsfeld · Bischofswerda, DE
• Manfred Patsch · Monsheim, DE

Key dates

• Filing date: Jun 5, 1974
• Grant date: Aug 31, 1976
• Expiry date: Jun 5, 1994

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C46/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

1-Chloroanthraquinone is produced by decarboxylation of 4-chloroanthraquinone-1-carboxylic acid in the presence of a carboxamide. The product is a starting material for the production of dyes, pest control agents and pigments.