compounds, compositions containing them imidazolici and its preparation method and application

摘要

Novel imidazole compounds, pesticidal compositions and methods of using them, and their preparation are described The compounds have the formula in which X is oxygen or sulphur, R3 is optionally substituted alkylthio, alkenylthio, aralkylthio, alkoxyalkyl or alkylthioalkyl, R4 is alkyl or cycloalkyl, and R1 and R2 are each alkyl alkenyl, alkoxyalkyl or haloalkyl, or R1 and R2 together with the nitrogen atom to which they are attached form an optionally substituted heterocyclic ring; and salts thereof. Novel compounds are of particular value against insects e.g. aphids, and against other pests, e.g. acarids.