Substituted bicyclic 3-aryl-pyrrolidine-2,4-dione derivates and herbicidal and pesticidal use thereof

Substituted 3-aryl-pyrrolidine-2,4-dione compounds of the formula (I) ##STR307## in which A and Q together represent an alkanediyl or alkenediyl group having 3 carbon atoms, each of these groups being monosubstituted to trisubstituted by identical or different substituents, each of these groups being substituted by halogen, hydroxyl, mercapto, in each case optionally halogen-substituted alkyl having 1 to 10 carbon atoms, alkylcarbonyloxy having 1 to 8 carbon atoms, alkoxy having 1 to 6 carbon atoms, alkylthio having 1 to 6 carbon atoms, cycloalkyl having 3 to 7 carbon atoms or aryl having 6 to 10 carbon atoms, and each of these groups additionally being interrupted, if appropriate, by one of these groups below:

• ##STR308## B represents hydrogen or alkyl having 1 to 6 carbon atoms, X represents C.sub.1 -C.sub.6 -alkyl, halogen or C.sub.1 -C.sub.6 -alkoxy,
• Y represents hydrogen, C.sub.1 -C.sub.6 -alkyl, halogen, C.sub.1 -C.sub.6 -alkoxy or C.sub.1 -C.sub.3 -halogenoalkyl,
• Z represents C.sub.1 -C.sub.6 -alkyl, halogen or C.sub.1 -C.sub.6 -alkoxy,
• n represents a number 0, 1, 2 or 3,
• G represents hydrogen (a) or the groups ##STR309## in which E represents a metal ion equivalent or an ammonium ion,
• L and M represent oxygen and/or sulphur,
• R.sup.1 represents optionally halogen-substituted C.sub.1 -C.sub.20 -alkyl, C.sub.2 -C.sub.20 -alkenyl, C.sub.1 -C.sub.8 -alkoxy-C.sub.2 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkylthio-C.sub.2 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -polyalkoxy-C.sub.2 -C.sub.8 -alkyl or cycloalkyl which have 3 to 8 ring atoms and which can be interrupted by oxygen and/or sulphur atoms, or represents phenyl which is optionally substituted by halogen, nitro, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.1 -C.sub.6 -halogenoalkyl or C.sub.1 -C.sub.6 -halogenoalkoxy-, or represents phenyl-C.sub.1 -C.sub.6 -alkyl which is optionally substituted by halogen, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.1 -C.sub.6 -halogenoalkyl or C.sub.1 -C.sub.6 -halogenoalkoxy,
• R.sup.2 represents optionally halogen-substituted C.sub.1 -C.sub.20 -alkyl, C.sub.2 -C.sub.20 -alkenyl, C.sub.1 -C.sub.8 -alkoxy-C.sub.2 -C.sub.8 -alkyl or C.sub.1 -C.sub.8 -polyalkoxy-C.sub.2 -C.sub.8 -alkyl, or represents phenyl or benzyl which are optionally substituted by halogen, nitro, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy or C.sub.1 -C.sub.6 -halogenoalkyl-,
• R.sup.3, R.sup.4 and R.sup.5 independently of one another represent optionally halogen-substituted C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, C.sub.1 -C.sub.8 -alkylamino, di-(C.sub.1 -C.sub.8)-alkylamino, C.sub.1 -C.sub.8 -alkylthio, C.sub.2 -C.sub.5 -alkenylthio, C.sub.2 -C.sub.5 -alkinylthio or C.sub.3 -C.sub.7 -cycloalkylthio, or represent phenyl, phenoxy or phenylthio which are optionally substituted by halogen, nitro, cyano, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -halogenoalkoxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -halogenoalkylthio, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -halogenoalkyl,
• R.sup.6 and R.sup.7 independently of one another represent hydrogen, optionally halogen-substituted C.sub.1 -C.sub.20 -alkyl, C.sub.1 -C.sub.20 -alkoxy, C.sub.2 -C.sub.8 -alkenyl or C.sub.1 -C.sub.20 -alkoxy-C.sub.1 -C.sub.20 -alkyl, or represent phenyl which is optionally substituted by halogen, C.sub.1 -C.sub.20 -halogenoalkyl, C.sub.1 -C.sub.20 -alkyl or C.sub.1 -C.sub.20 -alkoxy, or represent benzyl which is optionally substituted by halogen, C.sub.1 -C.sub.20 -alkyl, C.sub.1 -C.sub.20 -halogenoalkyl or C.sub.1 -C.sub.20 -alkoxy,
• R.sup.8 and R.sup.9 independently of one another represent hydrogen or alkyl having 1 to 6 carbon atoms.