New imidazole compounds, pesticidal compositions and methods of using them, and their preparation are described. The compounds have the formula ##STR1## in which X is oxygen or sulphur, R.sup.3 is hydrogen, alkyl or alkenyl, R.sup.4 is alkyl or cycloalkyl, and R.sup.1 and R.sup.2 are each lower alkyl or alkenyl, R.sup.1 is lower alkyl and R.sup.2 is alkoxyalkyl or haloalkyl, or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached, from a heterocyclic ring. Novel compounds are of particular value against insects e.g. aphids, and against other pests, e.g. acarids.
本发明涉及新的
咪唑类化合物、杀虫组合物及其使用方法,以及它们的制备方法。该化合物的
化学式为:##STR1## 其中,X为氧或
硫,R.sup.3为氢、烷基或烯基,R.sup.4为烷基或环烷基,R.sup.1和R.sup.2分别为低级烷基或烯基,R.sup.1为低级烷基,R.sup.2为烷氧基烷基或卤代烷基,或R.sup.1和R.sup.2与它们所连接的氮原子一起形成一个杂环环。新型化合物对昆虫(例如蚜虫)和其他害虫(例如螨)具有特殊的价值。