2-ARYL-2-METHYLPROPYL ETHER DERIVATIVE AND INSECTICIDE CONTAINING SAID DERIVATIVE AS ACTIVE COMPONENT

摘要

NEW MATERIAL:The 2-aryl-2-methylpropyl ether derivative of formula I (X is F, Cl or Br). EXAMPLE:3-Phenoxybenzyl 2-(4-difluorobromomethoxyphenyl)-2-methylpropyl ether. USE:An insecticide. An excellent compound having high insecticidal activity and broad insecticidal spectrum, exhibiting remarkable effect against lepidopterous vermin and useful especially in agricultural field. PREPARATION:A compound of formula I wherein X is Br can be produced by reacting the phenol derivative of formula III with CF2Br2 in a polar solvent such as 1,3-dimethyl-2-imidazolinone in the presence of a base such as KOH. Reaction of the product with HF gives another compound of formula I wherein X is F. The other compound of formula I wherein X is Cl can be produced by reacting the phenol derivative of formula III with CF2BrCl.