Substituted 1-methyl-3-phenylpyrazoles and the use thereof as herbicides and for the desiccation or defoliation of plants

US5962694A · kind A · utility

Assignee

• BASF SE

Inventors

• Cyrill Zagar · Ludwigshafen, DE
• Albrecht Harreus · Ludwigshafen, DE
• Christoph-Sweder von dem Bussche-Hunnefeld · Mannheim, DE
• Gerhard Hamprecht · Weinheim, DE
• Elisabeth Heistracher · Ludwigshafen, DE
• Peter Schafer · Ottersheim, DE
• Olaf Menke · Altleiningen, DE
• Karl-Otto Westphalen · Speyer, DE
• Ulf Misslitz · Neustadt, DE
• Helmut Walter · Obrigheim, DE

Key dates

• Filing date: May 7, 1998
• Grant date: Oct 5, 1999
• Expiry date: May 7, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D231/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Substituted 1-methyl-3-phenylpyrazoles I and their agriculturally useful acid addition salts ##STR1## where R.sup.1 =C.sub.1 -C.sub.4 -haloalkoxy or C.sub.1-C.sub.4 -haloalkylthio; PA1 R.sup.2 =halogen; R.sup.3 =F or Cl; PA1 R.sup.4 =CN, C.sub.1 -C.sub.4 -fluoroalkyl, C.sub.2 -C.sub.4 -fluoroalkenyl or --C(R.sup.5)(X-R.sup.6)(Y-R.sup.7); PA1 R.sup.5 =H or C.sub.1 -C.sub.4 -alkyl; X and Y=--O-- or --S--; PA1 R.sup.6, R.sup.7 =C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -haloalkyl, C.sub.3 -C.sub.4 -alkenyl, C.sub.3 -C.sub.4 -haloalkenyl or C.sub.3 -C.sub.4 -alkynyl; are used as herbicides; for the desiccation/defoliation of plants.