Process for the preparation of novel O-pyrazolopyrimidin(thiono)-phosphates/phosphonates/phosphoramidates/p hosphonamidates and their use in insecticides, acaricides and nematicides

摘要

Novel O-pyrazolopyrimidin(thiono)phosphates/phos-phonates/phosphoramidates/p hosphonamidates of the formula I IMAGE in which the substituents are as defined in Claim 1, are prepared. These novel compounds are obtained by reacting suitable halo(thiono)phosphates/phosphonates/phosphoramidates/phosphonamidates with 2-hydroxypyrazolopyrimidine derivatives in the presence of an acid acceptor or in the form of the corresponding alkali metal salts, alkaline earth metal salts or ammonium salts. The use of the novel compounds of the formula I as active ingredient in insecticidal, acaricidal or nematicidal compositions is described.