relations with pesticide effect and method for their manufacture

摘要

Compounds of Formula (I): CHEM wherein: Ar is phenyl, naphthyl, thienyl, fluorenyl, phenanthrenyl, dibenzo furanyl or a polynuclear group (A); CHEM in which a is 0, 1 or 2; B is (D)b(CH2)c(E)ewhere each of D and E is oxygen or sulphur, b and e are independently 0 or 1 but not both 1, and c is 0, 1, 2 or 3, the sum of a,b,c and e being at least 3, and the ring containing B is wholly or partially saturated; and G is hydrogen or a benzene ring fused to the benzene ring of group (A); any of the groups Ar may be substituted by one or more of C1-4 alkyl, halo-(C1-4) alkyl, halo, C1-4 alkoxy (except 3,4-methylenedioxy) or C1-4 halo -alkoxy; n is 1 to 8, except that n is 1 to 4 when Ar is phenyl or substituted phenyl; each of R2 and R3 is in each case independently hydrogen, C1-4 alkyl or halo-(C1-4) alkyl; and R and R1 are each selected from hydrogen, alkyl, cycloalkyl, alkenyl or alkoxy (any of which may be substituted by halo, alkenyl, alkyl, cycloalkyl, alkoxy, alkynyl or cyano) are insecticidal and acaricidal.