Pyrazole-4-yl-hetaroyl derivatives as herbicides

US5925767A · kind A · utility

Assignee

• BASF SE

Inventors

• Martina Otten · Ludwigshafen, DE
• Wolfgang Deyn · Neustadt, DE
• Stefan Engel · Idstein, DE
• Regina Luise Hill · Speyer, DE
• Uwe Kardorff · Mannheim, DE
• Marcus Vossen · Mannheim, DE
• Peter Plath · Bischofswerda, DE
• Norbert Gotz · Worms, DE
• Karl-Otto Westphalen · Speyer, DE
• Helmut Walter · Obrigheim, DE
• Ulf Misslitz · Neustadt, DE

Key dates

• Filing date: Aug 24, 1998
• Grant date: Jul 20, 1999
• Expiry date: Aug 24, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D411/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Pyrazolylhetaroyl derivatives of the formula I ##STR1## where the substituents have the following meanings: L and M are hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.2 -C.sub.6 -alkenyl, C.sub.2 -C.sub.6 -alkynyl, C.sub.1 -C.sub.4 -alkoxy, it being possible for these groups to be unsubstituted or substituted by one to five halogen atoms or C.sub.1 -C.sub.4 -alkoxy; halogen, cyano, nitro; PA1 X is oxygen or sulfur which can be substituted by one or two oxygens; PA1 n is zero, one or two; and PA1 Q, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the meanings given in claim 1, processes for the preparation of the pyrazol-4-yl-hetaroyl derivatives, compositions comprising them, and the use of these derivatives or of the compositions comprising them for controlling weeds.