Organo phosphorus esters, processes for their preparation, pesticidal compositions containing these compounds and their use as insecticides, acaricides and nematocidal

摘要

Organophosphorus esters of the formula (I), IMAGE (I) wherein R is a C1-C2 alkyl group, R1 is a C1-C2 alkyl, C1-C2 alkoxy, C1-C4 alkylamino, phenyl or phenoxy group, R2 and R3, which may be the same or different, are each a C1-C5 alkyl or methoxy C2-C3 alkyl group and X is an oxygen or sulfur atom, a method for producing organophosphorus esters of the formula (I) characterized by condensation reaction of s-triazines of the formula, IMAGE wherein M is a potassium or sodium atom and R2 and R3 are as defined above, with a halogenated compound of the formula, IMAGE wherein Y is a halogen atom and R, R1 and X are as defined above, and an insecticide, acaricide and/or nematocide characterized by containing organophosphorus esters of the formula (I) as an active ingredient.