PROCESS FOR THE PREPARATION OF A PESTICIDAL COMPOSITION NAMELY AN INSECTICIDAL AND NEMATICIDAL COMPOSITION CONTAINING N-SUBSTITUTED O-PYRAZOL-4-YL CARBAMATES

摘要

N-substituted O-pyrazol-4-yl carbamates of the general formula IMAGE (I) are new and are obtained when (a) a 4-hydroxy-pyrazole of the general formula IMAGE (II) is reacted with an N-sulphenylated carbamoyl halide of the formula IMAGE (III) or (b) a 4-hydroxy-pyrazole of formula (II) is reacted with an acylating agent of the general formula IMAGE (IV) or (c) an O-pyrazol-4-yl carbamate of the general formula IMAGE (V) is reacted with a sulphenyl halide of the general formula R7-(S)n-Y (VI) The new N-substituted O-pyrazol-4-yl carbamates of the formula (I) are distinguished by high activity as pest-combating agents, in particular by high insecticidal and nematicidal activity.