Process for the preparation of fluorine-substituted aminobenzodioxoles and -benzodioxanes and new intermediates

US5260460A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Peter Andres · Ginsheim-Gustavsburg, DE
• Albrecht Marhold · Leverkusen, DE

Key dates

• Filing date: Sep 28, 1992
• Grant date: Nov 9, 1993
• Expiry date: Sep 28, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D317/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

According to the invention, a new process for the preparation of fluorine-substituted aminobenzodioxoles and -benzodioxanes of the formula (I) ##STR1## in which n represents an integer 1 or 2, has been found, in which fluorine-substituted nitrohalogeno-benzodioxoles and -benzodioxanes, which are likewise new, are hydrogenated. The novel intermediates are obtained from fluorine-substituted benzodioxoles and benzodioxanes by halogenation and subsequent nitration. The amino compounds are important starting materials for highly active biocides.