Substituted pyridazinones, salts or n-oxides thereof and their use as herbicidally active substances

Substituted pyridazinones of the general formula (I), salts or N-oxides thereof

• in which
• W represents oxygen or sulfur,
• R1 represents hydrogen, halogen, formyl, cyano, (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, (C2-C8)-alkynyl, (C2-C8)-haloalkynyl, (C1-C8)-alkoxy, (C1-C8) haloalkoxy, (C1-C8)-alkylthio, (C1-C8)-alkylsulfinyl, (C1-C8)-alkylsulfonyl, (C2-C8)-cyanoalkyl, (C1-C8)-alkylcarbonyl, (C1-C8)-alkoxycarbonyl, (C1-C8) alkylcarbonyloxy, (C1-C8)-alkoxy-(C1-C8)-alkyl, (C1-C8)-haloalkoxy-(C1-C8)-alkyl, (C1-C8)-alkylthio-(C1-C8)-alkyl, (C1-C8)-haloalkylthio-(C1-C8)-alkyl, (C1-C8)-alkylcarbonyl-(C1-C8)-alkyl, (C1-C8)-alkoxycarbonyl-(C1-C8)-alkyl, (C3-C8)-cycloalkyl, (C3-C8)-halocycloalkyl, (C1-C8)-alkyl-(C3-C8)-cycloalkyl or (C3-C8)-cycloalkyl-(C1-C8)-alkyl,
• R2 represents hydrogen, (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, (C2-C8)-alkynyl, (C2-C8)-haloalkynyl, (C1-C8)-alkoxy, (C1-C8) haloalkoxy, (C2-C8)-cyanoalkyl, (C1-C8)-alkoxy-(C1-C8)-alkyl, (C1-C8)-haloalkoxy-(C1-C8)-alkyl, (C1-C8)-alkylthio-(C1-C8)-alkyl, (C1-C8)-haloalkylthio-(C1-C8)-alkyl, (C1-C8)-alkylcarbonyl-(C1-C8)-alkyl, (C1-C8)-alkoxycarbonyl-(C1-C8)-alkyl, (C3-C8)-cycloalkyl, (C3-C8)-halocycloalkyl, (C1-C8)-alkyl-(C3-C8)-cycloalkyl or (C3-C8)-cycloalkyl-(C1-C8)-alkyl,
• R3 represents (C3-C8)-cycloalkyl, (C3-C8)-cycloalkenyl, aryl, heteroaryl, heterocyclyl, a bicyclic or a heterobicyclic residue, wherein each of the previously mentioned seven residues is unsubstituted or is independently substituted by one to five residues selected from the group R4,
• G represents hydrogen, (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, (C2-C8)-alkynyl, (C2-C8)-haloalkynyl, (C1-C8)-alkoxy-(C1-C8)-alkyl, (C1-C8)-haloalkoxy-(C1-C8)-alkyl, (C3-C8)-cycloalkyl, (C3-C8)-halocycloalkyl, (C1-C8)-alkyl-(C3-C8)-cycloalkyl, (C3-C8)-cycloalkyl-(C1-C8)-alkyl, —C(═O)R5, —C(═S)R5, —CO2R6, —(C1-C8)-alkyl-OCO2R6, —C(═O)SR6, —S(O)2R5, —CONR7R8, —S(O)2NR7R8 or —P(═O)R9R9, or represents phenyl-(C1-C8)-carbonyl-(C1-C8)-alkyl, unsubstituted or independently substituted by one to five residues selected from halogen, (C1-C4)-alkyl, (C1-C4)-haloalkyl, (C1-C4)-alkoxy, (C1-C4)-haloalkoxy or (C3-C6)-cycloalkyl,
• R4 represents halogen, cyano, nitro, (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, (C2-C8)-alkynyl, (C2-C8)-haloalkynyl, (C1-C8)-alkoxy, (C1-C8)-haloalkoxy, (C1-C8)-alkylthio, (C1-C8)-haloalkylthio, (C1-C8)-alkylsulfinyl, (C1-C8)-haloalkylsulfinyl, (C1-C8)-alkylsulfonyl, (C1-C8)-haloalkylsulfonyl, (C1-C8)-alkylcarbonyl, (C1-C8)-haloalkylcarbonyl, (C3-C8)-cycloalkyl, (C3-C8)-halocycloalkyl, (C3-C8)-cycloalkoxy, (C3-C8)-halocycloalkoxy, (C3-C8)-cycloalkyl-(C1-C8)-alkyl, (C3-C8)-halocycloalkyl-(C1-C8)-alkyl, (C1-C8)-alkyl-(C3-C8)-cycloalkyl, (C1-C8)-haloalkyl-(C3-C8)-cycloalkyl or (C3-C9)-trialkylsilyl, or represents benzyl, aryl, heteroaryl or heterocyclyl, wherein each of the previously mentioned four residues is unsubstituted or is independently substituted by one to five residues selected from halogen, (C1-C4)-alkyl, (C1-C4)-haloalkyl, (C1-C4)-alkoxy, (C1-C4)-haloalkoxy or (C3-C6)-cycloalkyl,
• R5 represents (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, (C2-C8)-alkynyl, (C2-C8)-haloalkynyl, (C1-C8)-alkoxy-(C1-C8)-alkyl, (C1-C8)-haloalkoxy-(C1-C8)-alkyl, (C3-C8)-cycloalkyl, (C3-C8)-halocycloalkyl, (C1-C8)-alkyl-(C3-C8)-cycloalkyl or (C3-C8)-cycloalkyl-(C1-C8)-alkyl, or represents benzyl, aryl, heteroaryl or heterocyclyl, wherein each of the previously mentioned four residues is unsubstituted or is independently substituted by one to five residues selected from halogen, (C1-C4)-alkyl, (C1-C4)-haloalkyl, (C1-C4)-alkoxy, (C1-C4)-haloalkoxy or (C3-C6)-cycloalkyl,
• R6 represents (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, (C2-C8)-alkynyl, (C2-C8)-haloalkynyl, (C1-C8)-alkoxy-(C1-C8)-alkyl, (C1-C8)-haloalkoxy-(C1-C8)-alkyl, (C3-C8)-cycloalkyl, (C3-C8)-halocycloalkyl, (C1-C8)-alkyl-(C3-C8)-cycloalkyl or (C3-C8)-cycloalkyl-(C1-C8)-alkyl, or represents benzyl, aryl, heteroaryl or heterocyclyl, wherein each of the previously mentioned four residues is unsubstituted or is independently substituted by one to five residues selected from halogen, (C1-C4)-alkyl, (C1-C4)-haloalkyl, (C1-C4)-alkoxy, (C1-C4)-haloalkoxy or (C3-C6)-cycloalkyl,
• R7 represents (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-haloalkenyl, (C2-C8)-alkynyl, (C2-C8)-haloalkynyl, (C1-C8)-alkoxy-(C1-C8)-alkyl, (C1-C8)-haloalkoxy-(C1-C8)-alkyl, (C3-C8)-cycloalkyl, (C3-C8)-halocycloalkyl, (C1-C8)-alkyl-(C3-C8)-cycloalkyl or (C3-C8)-cycloalkyl-(C1-C8)-alkyl, or represents benzyl, aryl, heteroaryl or heterocyclyl, wherein each of the previously mentioned four residues is unsubstituted or is independently substituted by one to five residues selected from halogen, (C1-C4)-alkyl, (C1-C4)-haloalkyl, (C1-C4)-alkoxy, (C1-C4)-haloalkoxy or (C3-C6)-cycloalkyl,
• R8 represents hydrogen, (C1-C8)-alkyl, (C1-C8)-haloalkyl, (C2-C8)-alkenyl, (C2-C8)-alkynyl, (C1-C8)-alkoxy-(C1-C8)-alkyl, (C3-C8)-cycloalkyl or (C3-C8)-cycloalkyl-(C1-C8)-alkyl,
• R7/R8 represent, together with the nitrogen atom to which they are bonded, a fully or partially saturated 3- to 10-membered monocyclic or bicyclic ring system optionally interrupted by heteroatoms and optionally having further substitution,
• R9 represents (C1-C8)-alkyl or (C1-C8)-alkoxy.