Isothioureas and insecticidal use thereof

Abstract

The invention relates to novel substituted N-phenyl-N'-acylisothioureas of the formula ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.5 alkyl, R.sub.2 is hydrogen or C.sub.1 -C.sub.5 alkyl, R.sub.3 is hydrogen, halogen, C.sub.1 -C.sub.5 alkyl, phenoxy or phenoxy which is substituted by 1 or 2 identical or different members selected from the group consisting of halogen atoms, C.sub.1 -C.sub.5 alkyl or trifluoromethyl radicals, R.sub.4 is C.sub.1 -C.sub.5 alkyl or propargyl, R.sub.5 is C.sub.1 -C.sub.5 alkyl, C.sub.3 -C.sub.6 cycloalkyl, allyl or propargyl, and R.sub.6 is a radical selected from --CO--R.sub.7, --CO--CO--R.sub.8, --SO.sub.2 --R.sub.7 or --CO--OR.sub.7, wherein R.sub.7 is C.sub.1 -C.sub.5 alkyl, phenyl or phenyl which is substituted by 1 or 2 halogen atoms or methyl groups, and R.sub.8 is C.sub.1 -C.sub.10 alkoxy or C.sub.1 -C.sub.5 dialkylamino. The invention further relates to the preparation of these compounds and to compositions containing them for use in pest control, in particular for controlling plants and animals which are attacked by insects. The novel compounds are in particular very effect against plant destructive feeding insects.

Dependencies are inferred from the claim text.