Plant protection agents based on pyrazolecarboxylic acid derivatives

US5945541A · kind A · utility

Assignee

• Hoechst Schering Agrevo GmbH · DE

Inventors

• Erich Sohn · Augsburg, DE
• Hilmar Mildenberger · Kelkheim, DE
• Klaus Bauer · Rodgau, DE
• Hermann Bieringer · Eppstein, DE

Key dates

• Filing date: Dec 15, 1994
• Grant date: Aug 31, 1999
• Expiry date: Dec 15, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D231/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to agents for protecting crop plants from the phytotoxic side effects of herbicides, which agents contain a compound of the formula I ##STR1## wherein Y denotes C--H or N, the symbols R.sub.1 independently of one another denote alkyl, halo-alkyl, alkoxy, haloalkoxy or halogen, R.sub.2 denotes alkyl or cycloalkyl, X denotes COOR.sub.3, CON(R.sub.4).sub.2, COSR.sub.3, CN or ##STR2## R.sub.3 denotes an alkali metal or alkaline earth metal, hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, or phenylalkyl, it being possible for phenyl to be substituted by halogen, or trialkylsilylalkyl or alkoxyalkyl, the symbols R.sub.4 independently of one another denote H, alkyl or cycloalkyl, which can be substituted, or 2 radicals R.sub.4 together with the N atom linking them form a 4- to 7-membered heterocyclic ring and n denotes 1 to 3, in combination with a herbicide.