Substituted benzoyl ketones, methods for producing them and their use as herbicides

A compound of formula (I)

• or tautomers thereof, or a salt of a compound of formula (I) or tautomers thereof, wherein
• n represents 0, 1, 2 or 3,
• A represents a single bond or represents alkanediyl (alkylene) having 1 to 4 carbon atoms,
• R1 represents hydrogen, represents optionally cyano, carboxyl, carbamoyl, halogen, C1-C4-alkoxy-, C1-C4-alkylthio-, C1-C4-alkylsulphinyl- or C1-C4-alkylsulphonyl-substituted alkyl having 1 to 6 carbon atoms, or represents optionally cyano-, carboxyl-, carbamoyl-, halogen-, C1-C4-alkyl- or C1-C4-alkoxy-carbonyl-substituted cycloalkyl having 3 to 6 carbon atoms,
• R2 represents hydrogen, cyano, carbamoyl, halogen, represents in each case optionally cyano-, carbamoyl-, halogen- or C1-C4-alkoxy-substituted alkyl, alkoxy or alkoxycarbonyl having in each case up to 6 carbon atoms, or represents in each case optionally halogen-substituted alkylthio, alkylsulphinyl or alkylsulphonyl having in each case 1 to 6 carbon atoms,
• R3 represents hydrogen, nitro, cyano, carboxyl, carbamoyl, thiocarbamoyl, halogen, represents in each case optionally halogen-, C1-C4-alkoxy-, C1-C4-alkylthio-, C1-C4-alkylsulphinyl- or C1-C4-alkylsulphonyl-substituted alkyl, alkoxy, alkylthio, alkylsulphinyl or alkylsulphonyl having in each case up to 4 carbon atoms in the alkyl groups, or represents alkylamino, dialkylamino or dialkylaminosulphonyl having in each case up to 4 carbon atoms in the alkyl groups,
• R4 represents nitro, cyano, carboxyl, carbamoyl, thiocarbamoyl, halogen, represents in each case optionally halogen-, C1-C4-alkoxy-, C1-C4-alkylthio-, C1-C4-alkylsulphinyl- or C1-C4-alkylsulphonyl-substituted alkyl, alkoxy, alkylthio, alkylsulphinyl or alkylsuiphonyl having in each case up to 4 carbon atoms in the alkyl groups, or represents alkylamino, dialkylamino or dialkylaminosulphonyl having in each case up to 4 carbon atoms in the alkyl groups, and
• Z represents one of the heterocyclic groupings below
• where the dotted line is in each case a single bond or a double bond,
• Q represents oxygen or sulphur,
• R5 represents hydrogen, hydroxyl, mercapto, cyano, halogen, represents in each case optionally cyano-, halogen-, C1-C4-alkoxy-, C1-C4-alkylthio-, C1-C4-alkylsulphinyl- or C1-C4-alkylsulphonyl-substituted alkyl, alkylcarbonyl, alkoxy, alkoxycarbonyl, alkylthio, alkylsulphinyl or alkylsulphonyl having in each case up to 6 carbon atoms in the alkyl groups, represents in each case optionally halogen-substituted alkylamino or dialkylamino having in each case up to 6 carbon atoms in the alkyl groups, represents in each case optionally halogen-substituted alkenyl, alkinyl, alkenyloxy, alkenylthio or alkenylamino having in each case up to 6 carbon atoms in the alkenyl- or alkinyl groups, represents in each case optionally halogen-substituted cycloalkyl, cycloalkyloxy, cycloalkylthio, cycloalkylamino, cycloalkylalkyl, cycloalkylalkoxy, cycloalkylalkylthio or cycloalkylalkylamino having in each case 3 to 6 carbon atoms in the cycloalkyl groups and optionally up to 4 carbon atoms in the alkyl moiety, or represents in each case optionally halogen-, C1-C4-alkyl- or C1-C4-alkoxy-substituted phenyl, phenyloxy, phenylthio, phenylamino, benzyl, benzyloxy, benzylthio or benzylamino, or—if two adjacent radicals R5 and R5 are located at a double bond—together with the adjacent radical R5 also represents a benzo grouping, and
• R6 represents hydrogen, hydroxyl, amino, alkylideneamino having up to 4 carbon atoms, represents in each case optionally halogen- or C1-C4-alkoxy-substituted alkyl, alkoxy, alkylamino, dialkylamino or alkanoylamino having in each case up to 6 carbon atoms in the alkyl groups, represents in each case optionally halogen-substituted alkenyl, alkinyl or alkenyloxy having in each case up to 6 carbon atoms in the alkenyl- or alkinyl groups, represents in each case optionally halogen-substituted cycloalkyl, cycloalkylalkyl or cycloalkylamino having in each case 3 to 6 carbon atoms in the cycloalkyl groups and optionally up to 3 carbon atoms in the alkyl moiety, or represents in each case optionally halogen-, C1-C4-alkyl- or C1-C4-alkoxy-substituted phenyl or benzyl, or together with an adjacent radical R5 or R6 represents optionally halogen- or C1-C4-alkyl-substituted alkanediyl having 3 to 5 carbon atoms,
• where the individual radicals R5 and R6—if a plurality of them are attached to the same heterocyclic grouping—can have identical or different meanings within the scope of the above definition.