Pyrethroids

Abstract

Pyrethroid type insecticides are described having the formula: ##STR1## wherein: R.sup.1 =H, CN, C.tbd.CH R.sup.2 =3-phenoxy, 3-benzyl, 4-allyl, 4-propargyl. R.sup.3 =H, alkyl bound to the heterocyclic ring in position 3 or 2; R.sup.4 =(in position 4 or 5 of the heterocyclic ring)=benzyl, benzoyl, phenoxy, allyl, propargyl; Y=O, S R.sup.5 and R.sup.6 =alkyl C.sub.1 -C.sub.3, or R.sup.5 and R.sup.6 together form an orthocondensed aromatic, heteroaromatic or aliphatic, saturated or unsaturated ring; R.sup.7 and R.sup.8 (equal to or different from each other)=H, halogen, CH.sub.3 ; R.sup.9 =phenyl, vinyl, vinyl substituted, phenoxy. Compounds of general formula I are endowed with a high insecticide and acaricide activity.

Dependencies are inferred from the claim text.