Compounds of the formula I IMAGE in which R1, R2, R3, R4 and X have the meaning defined in Patent Claim 1, are potent insecticides. They form the active substances of the novel insecticide preparations. They are prepared by reacting a compound of the formula II IMAGE with a compound of the formula III R1-N=C=X or with a compound of the formula IMAGE and, if appropriate, further reacting the resulting compound, in which R4 equals H, with an R4-halide.
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机译：其中R1，R2，R3，R4和X具有专利权利要求1所定义的式I 化合物是有效的杀虫剂。它们形成了新型杀虫剂制剂的活性物质。它们通过使式II 的化合物与式III R1-N = C = X的化合物或与式的化合物反应，并且如果合适的话，进一步使所得化合物在其中R4等于H，带有R4-卤化物。
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