NOVEL CARBOXYLIC ACID ESTER AND ACARICIDE AND INSECTICIDE CONTAINING IT

摘要

NEW MATERIAL:A carboxylic acid ester shown by the formulaI(R is a group shown by the formula II, formula III, formula IV, etc.; X is Cl or difluoromethoxy; Y is Cl or t-butyl; Z is halogen). EXAMPLE:Cyano( 5-fluoro-6-phenoxy-2-pyridyl ) methyl ester of alpha-isopropyl-p- chlorophenyl acetic acid. USE:Useful as an insecticide and an acaricide, showing improved effect especially on sanitary noxious insects and agricultural and gardening noxious insects. Exhibiting insecticidal action on young larvae and old larvae. PROCESS:For example, as shown in the reaction formula, a compound shown by the formula CO-Hal (Hal is halogen) is reacted with cyano (5-fluoro-6-phenoxy- 2-pyridyl)methyl alcohol in the presence of a dehydrohalogenating agent such as pyridine, etc. in an inert solvent such as benzene, etc., to give a compound shown by the formulaI.