| 摘要 |
A compound of Formula I or a salt thereof: Ar-Q-(CH2)m-A-CH2)n (CE1=CE2)aCE3=CE4CXNR1R2(1) where Ar is a 6-membered heteroaromatic ring containing, as the heteroatom or heteroatoms, one or two nitrogen atoms and is optionally substituted by one or more of halogen, cyano, C1-6-alkyl (optionally substituted by halogen), or C1-6-alkoxy (optionally substituted by one or more of halogen or C1-6-alkyl), or RS(O)x where x is 0, 1 or 2 and R is C1-6-alkyl optionally substituted by one or more halogen atoms, Q is -CH2- or -O-, m and n are each independently 0 to 7, A is -CH2- or -O-, a is 0 or 1, E1 to E4 are independently hydrogen, C1-4-alkyl or halo-C1-4-alkyl or halogen, X is oxygen or sulphur, and R1 and R2 are independently hydrogen, C1-6-alkyl or C3-6-cycloalkyl, either being optionally substituted by one or more of the C1-6-alkyl, C2-6-alkenyl, dioxalanyl, C3-6-cycloalkyl, C1-6-alkoxy or RS(O)x as defined above. The compounds and their salts are useful as insecticides and acaricides.
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