Plant protection agents based on pyrazolecarboxylic acid derivatives

US5401700A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

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

Key dates

• Filing date: Jul 13, 1992
• Grant date: Mar 28, 1995
• Expiry date: Jul 13, 2012

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 ##STR1## wherein Y denotes C--H or N, PA1 the symbols R.sub.1 independently of one another denote alkyl, halo-alkyl, alkoxy, haloalkoxy or halogen, PA1 R.sub.2 denotes alkyl or cycloalkyl, PA1 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 trisalkylsilylalkyl or alkoxyalkyl, PA1 the symbols R.sub.4 independently of one another denote H, alkyl or cycloalkyl, which can be substituted, or radicals R.sub.4 together with the N atom linking them form a 4- to 7-membered heterocyclic ring and PA1 n denotes 1 to 3, in combination with a herbicide.