1-Phenyl-1,3,5,7-tetraaza-4-sulpha-hept-1-en-6-one derivatives

Abstract

Compounds of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 independently of one another are hydrogen, halogen, methyl or ethyl, R.sub.4 is C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.6 -cycloalkyl or (C.sub.3 -C.sub.6 -cycloalkyl)-methyl, and either (i) R.sub.5 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.3 -C.sub.6 -cycloalkyl or (C.sub.3 -C.sub.6 -cycloalkyl)-methyl, while R.sub.6 is C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.3 -C.sub.6 -cycloalkyl or (C.sub.3 -C.sub.6 -cycloalkyl)-methyl, or (ii) R.sub.5 and R.sub.6 together with the nitrogen atom to which they are attached represent a 5- or 6-membered heterocyclic ring optionally substituted by one or more C.sub.1 -C.sub.4 -alkyl groups and optionally including an oxygen or sulphur atom within the ring system, possess valuable insecticidal and in particular acaricidal properties.

Dependencies are inferred from the claim text.