Cyclopentane-1,3-dione derivatives

Compounds of the formula (II)

• in which
• X represents halogen, alkyl, alkenyl, alkoxy, alkenyloxy, alkylthio, alkylsulphinyl, alkylsulphonyl, halogenoalkyl, halogenoalkoxy, halogenoalkenyloxy, nitro, cyano or respectively optionally substituted phenyl, phenoxy, phenylthio, benzyloxy or benzylthio,
• Y represents hydrogen, halogen, alkyl, alkenyl, alkoxy, alkenyloxy, alkylthio, alkylsulphinyl, alkylsulphonyl, halogenoalkyl, halogenoalkoxy, halogenoalkenyloxy, nitro or cyano,
• Z represents halogen, alkyl, alkenyl, alkoxy, alkenyloxy, halogenoalkyl, halogenoalkoxy, halogenoalkenyloxy, nitro or cyano, with the proviso that X, Y and Z may not simultaneously represent methyl;
• A and Q together represent alkanediyl or alkenediyl, each of which is optionally substituted by halogen, hydroxyl, mercapto, by respectively optionally substituted alkyl, alkoxy, alkylthio, cycloalkyl, benzyloxy or aryl, and which may additionally contain one of the groups below
• or may be bridged by an alkanediyl group,
• B and B′ independently of one another each represent hydrogen, halogen or alkyl or together represent respectively optionally substituted alkanediyl or alkenediyl,
• R6 represents hydrogen, respectively optionally halogen-substituted alkyl, alkenyl, alkoxyalkyl, represents respectively optionally substituted cycloalkyl, phenyl or benzyl,
• R7 represents hydrogen or represents respectively optionally halogen-substituted alkyl or alkenyl or
• R6and R7 combine with the linking N-atom to form an optionally oxygen- or sulphur-containing and optionally substituted ring,
• R8 and R9 independently of one another each represent hydrogen or respectively optionally substituted alkyl, phenyl or phenylalkyl, or together represent an optionally substituted alkanediyl radical,
• R10 and R11 independently of one another each represent respectively optionally halogen-substituted alkyl, alkenyl, alkoxy, alkylamino, dialkylamino, alkenylamino or dialkenylamino or respectively optionally substituted phenyl or benzyl, and
• R12 represents alkyl.