Insecticidally and acaricidally active pyrimidine esters and intermediates therefor

摘要

This invention provides novel insecticidally and acaricidally active pyrimidine derivatives of formula (I): <IMAGE> (I) and stereoisomers thereof, wherein R1 is selected from alkyl; alkenyl; alkynyl; haloalkyl; haloalkenyl; and cycloalkyl optionally substituted by alkyl or halogen; R2 is selected from alkyl; haloalkyl; alkoxy; alkylamino; dialkylamino; halogen; cycloalkyl optionally substituted by halogen or alkyl; and phenyl optionally substituted by alkyl, haloalkyl, halogen or alkoxy; R3 is selected from hydrogen and halogen; R4 is the residue of an alcohol of formula R4-OH which forms an insecticidal ester when combined with chrysanthemic acid, permethrin acid or cyhalothrin acid; and X is selected from oxygen and sulphur.