Dialquil-1-H-3(2,4-dimetilfenil)-pirrolidin-2,4-dionas, processo para sua preparação, composições praguicidas, emprego, processo para combater pragas e para a preparação de composições

Dialkyl-1-H-3-(2,4-dimethylphenyl)-pyrrolidine-2,4-diones of the formula (I) in which A represents alkyl which is optionally substituted by halogen and B represents C2-C10-alkyl or A and B together with the carbon atom to which they are bonded represent an unsubstituted cycle, G represents hydrogen (a) or the groups E represents a metal ion equivalent or an ammonium ion, L and M represent oxygen and/or sulphur, R represents optionally halogen-substituted alkyl, alkenyl, alkoxyalkyl, alkylthioalkyl, polyalkoxyalkyl or cycloalkyl which can be interrupted by hetero atoms, optionally substituted phenyl, optionally substituted phenylalkyl, substituted hetaryl, substituted phenoxyalkyl or substituted hetaryloxyalkyl, R represents optionally halogen-substituted alkyl, alkenyl, alkoxyalkyl, polyalkoxyalkyl or optionally substituted cycloalkyl, phenyl or benzyl, R , R and R independently of one another represent optionally halogen-substituted alkyl, alkoxy, cycloalkyloxy, alkylamino, dialkylamino, alkylthio, alkenylthio, cycloalkylthio and optionally substituted phenyl, phenoxy, benzyloxy or phenylthio, R and R independently of one another represent hydrogen, optionally halogen-substituted alkyl, alkenyl, alkoxy, alkoxyalkyl, optionally substituted phenyl, optionally substituted benzyl, or together with the N atom to which they are bonded represent a cycle which is optionally interrupted by oxygen or sulphur, Processes for their preparation, and their use as pesticides and herbicides.