Phenylpyrazolecarboxylic acid derivatives, their preparation, and their use as plant-growth regulators and safeners

US4891057A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Erich Sohn · Augsburg, DE
• Reinhard Handte · Gablingen, DE
• Hilmar Mildenberger · Kelkheim, DE
• Helmut Burstell · Frankfurt am Main, DE
• Klaus Bauer · Rodgau, DE
• Hermann Bieringer · Eppstein, DE

Key dates

• Filing date: Oct 2, 1987
• Grant date: Jan 2, 1990
• Expiry date: Oct 2, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D413/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula I ##STR1## in which R denotes halogen, hydroxyl, cyano, nitro, (substituted) alkyl, (substituted) alkoxy, (halo)alkylthio, carboxyl, alkoxycarbonyl; (halo)alkylsulf(inyl)(onyl) or -(onyloxy); (halo)phenyl or (halo)phenoxy; X in the 3- or 5-position denotes a (thio)carboxylic acid--or an optionally heterocyclic radical which is derived therefrom; Y denotes halogen, m denotes the number 0 or 1, and n denotes a number from 0 to 5, have valuable plant growth-regulating properties and are suitable, in addition, as safeners for protecting crop plants against phytotoxic side effects of herbicides.