| 摘要 |
The invention relates to a method for producing pyrazolylbenzoyl derivatives of formula (I), wherein the substituents have the following meanings: R<1> represents hydrogen, C1-C4-alkyl or C1-C4 alkyl halide; R<2> represents hydrogen, C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkinyl, benzyl, benzoyl, C1-C4-alkylcarbonyl, hydroxycarbonyl-C1-C4-alkyl, C1-C4-alkoxycarbonyl-C1-C4-alkyl, C1-C4-alkylsulfonyl or phenylsulfonyl, and these groups can be substituted by C1-C4-alkyl, C1-C4-alkoxy, C1-C4-alkylthio, halogen, hydroxy, amino, nitro or cyano; A,B represent, independently of each other, hydrogen, C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkinyl, C1-C4-alkoxy and these groups can be substituted by halogen, hydroxy, C1-C4-alkoxy or cyano, halogen, hydroxy, cyano; nitro, a group-(Y)n-S(O)mR<3> or a group-(Y)n-CO-R<4>; Z represents a 5- or 6-membered heterocyclic, saturated or unsaturated fused ring; Y represents O, NR<5>; n represents zero or one; m represents zero, one or two; R<3> represents C1-C4-alkyl, C1-C4-alkyl halide or NR<5>R<6>; R<4> represents C1-C4-alkyl, C1-C4-alkyl halide, C1-C4-alkoxy, or NR<5>R<6>; R<5> represents hydrogen or C1-C4-alkyl; and R<6> represents C1-C4-alkyl. The invention also relates to novel pyrazolylbenzoyl derivatives, to herbicidal agents containing these derivatives and to a method for combating unwanted vegetation. |
