| 摘要 |
<p>NEW MATERIAL:The titled compound shown by the formula I (X is a group shown by the formula II or III; A is H or Cl; B is nitro or trifluoromethyl; Y is O or S; R1 is H, halogen or methyl; R3 and R4 are H or Cl). EXAMPLE:N-Benzoyl-N-[ 3,5-dichloro-4-( 3-chloro-5-trifluoromethyl-2-pyridyloxy ) phenyl ]urea. USE:Insecticides. Especially effective for controlling noxious insects. PROCESS:A benzoylisocyanate-based compound shown by the formula IV is reacted with an aniline-based compound shown by the formula V in a solvent, e.g., benzene, toluene, etc. at 0-120 deg.C for 0.1-24hr, to give the compound shown by the formula I.</p> |
