CHEMICAL COMPOUNDS

摘要

The use of a compound of formula I, Y is a single bond, C=O, C=S or S(O)_m where m is 0, 1 or 2; the ring is a 6 membered oaromatic ring or is a 5 or 6 membered heteroaromatic ring; Z and Z' are =C- or -N- provided that both are not N; R¹, R² R³ , R^3a,^{R4 , R8 and Ra are specified organic groups and n and p are independently 0, 1, 2, 3 or 4; or salts or N-oxides thereof or compositions containing them in controlling insects, acarines, nematodes or molluscs. Novel compounds are also provided.}