| 摘要 |
NEW MATERIAL:An N-benzoyl-N'-pyridyloxyalkylurea based compound expressed by formula I (R1-R3 are H or halogen; n is an integer 1-5). EXAMPLE:N-( 2,6-Difluorobenzoyl)-N'-[3-(3-chloro-5-trifluoromethyl-2-pyridyloxy) propyl]urea. USE:An insecticide, particularly an agent for destroying insects. PREPARATION:A benzoyl isocyanate based compound of formula II is reacted with a pyridyloxyalkylamine based compound expressed by formula III in the presence of a solvent, e.g. dioxane, at 0-200 deg.C for 0.1-24hr to give the aimed compound expressed by formula I.
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