| 摘要 |
<p>Isocyanate, W-NCO, is reacted in inert solvent at 20-120 deg.C with an amine, W'-NCH2, (where W and W' are of formulae (II) and (III) respectively), to give N-benzoyl-N'-pyridyl oxyphenylurea derivs. of formula (I). In the formulae, X1 is halogen; X2 and X5 are H or halogen; X3 and X4 are H or Cl, and X6 is halogen, N or trifluoromethyl. - The prods. are insecticides.</p> |
