There are described compounds of formula:
in which one out of R and R1 is F or Cl and the other is H, F or Cl;
X is a 1,4-phenylene or pyridyl bound in positions 2 and 5, optionally substituted;
Y is a phenyl, 2- or 3-pyridyl, optionally substituted.
The compounds of formula I are endowed with a high insecticide activity which is mainly directed against insect larvae and eggs.
其中 R 和 R1 中的一个是 F 或 Cl,另一个是 H、F 或 Cl;X 是结合在第 2 位和第 5 位的 1,4-亚苯基或
吡啶基,可选被取代;Y 是苯基、2-或 3-
吡啶基,可选被取代。 式 I 的化合物具有很高的杀虫活性,主要针对昆虫幼虫和虫卵。