| abstract |
The invention concerns pyrazolylhetaroyl derivatives of formula (I) in which the substituents have the following meanings: L, M are hydrogen, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkinyl, C1-C4 alkoxy, wherein these groups can optionally be substituted by between one and five halogen atoms or C1-C4 alkoxy; halogen, cyano, nitro; X is oxygen or sulphur which can be substituted by one or two oxygens; n is zero, one, two; and Q, R<1>, R<2>, R<3>, R<4> have the meanings given in claim 1. The invention further concerns a process for preparing the pyrazole-4-yl-hetaroyl derivatives, agents containing the latter, and the use of these derivatives or agents containing them for weed control. |