| 摘要 |
<p>Benzoylphenylureas The invention relates to novel substituted N-benzoyl-N'-(2-pyridyl-oxyphenyl)ureas of the formula wherein R1 is hydrogen, fluorine or chlorine; R2 is fluorine, chlorine, methyl, methoxy or methylthio; R3, R4 and R5 are each independently hydrogen, chlorine or methyl: X is oxygen or sulfur; and Y is one of the radicals -CC12-CC13, -CF2-CC13 or -CF2-CFC12; to processes and intermediates for the preparation of these compounds, as well as to compositions containing the novel compounds for use in pest control, in particular for controlling insects that attack plants and animals. The novel compounds exhibit especially high larvicidal activity against plant-destructive insects.</p> |
