N-Nitroaryl-N-halosulfonyl ureas

US4316861A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Otto Arndt · Hofheim, DE
• Wolfgang Tronich

Key dates

• Filing date: Dec 20, 1979
• Grant date: Feb 23, 1982
• Expiry date: Dec 20, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C307/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

N-o-nitro-phenyl- or -naphthyl-N'-halogensulfonyl ureas which may be substituted in their aromatic rings by a further nitro group (and the phenyl ureas also by fluoro, chloro, bromo, lower alkyl, lower alkoxy, trifluoromethyl, cyano or phenyl) are obtained by reacting the corresponding o-nitraniline with fluoro- or chlorosulfonylisocyanate. The products can be hydrolyzed to yield the corresponding nitroaryl ureas.