Arylsulfonylureas, processes for their preparation, and their use as herbicides and growth regulators

US5463081A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Oswald Ort · Königstein, DE
• Klaus Bauer · Rodgau, DE
• Hermann Bieringer · Eppstein, DE

Key dates

• Filing date: Sep 21, 1993
• Grant date: Oct 31, 1995
• Expiry date: Sep 21, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C311/65
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to novel intermediates for the preparation of a certain group of novel phenylsulfonylurea herbicides, which herbicides are particularly advantageous for use in crop protection. The novel intermediate compounds are of the formula II ##STR1## and of the formula VI, ##STR2## as defined in the specification and claims. The intermediate compounds may be used to prepare herbicidal and plant growth regulating compounds of the formula I or salts thereof: ##STR3## as defined in the specification. The herbicides so obtained are particularly suitable for selectively controlling weeds.