Compounds of formula IMAGE (I) wherein R1 is hydrogen, C1-C4alkyl or C3-C6cycloalkyl, R2 is hydrogen or C1-C4alkyl, R3 is hydrogen, C1-C4alkyl or C3-C6cycloalkyl and R4 is C1-C4alkyl, C3-C6cycloalkyl or -CH2CH2COOR7, or R3 and R4 together are -(CH2)4- or -(CH2)5-, R5 is hydrogen, C1-C4alkyl, IMAGE -CH2OCH3, -CN, -COOR7 or IMAGE R6 is hydrogen, chlorine, methyl or nitro, R7 and R8 are each methyl or ethyl, A is an unsubstituted or mono- to tetra-substituted, aromatic or non-aromatic, monocyclic or bicyclic, heterocyclic radical, one or two substituents being selected from the group consisting of C1-C3haloalkyl, cyclopropyl, halocyclopropy, C2-C3alkenyl, C2-C3alkynyl, C2-C3haloalkenyl, C2-C3haloalkynyl, C1-C3haloalkoxy, C1-C3alkylthio, C1-C3haloalkylthio, allyloxy, propargyloxy, allylthio, propargylthio, haloallyloxy, haloallylthio, cyano and nitro, and from one to four substituents being selected from the group consisting of C1-C3alkyl, C1-C3alkoxy and halogen, and =X is =N-NO2, =CH-NO2, =N-CN or =CH-CO-CF3, in free form or in the form of acid addition salts, can be used as agrochemical active ingredients and can be prepared in a manner known per se.
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