Pesticidal O-ethyl-S-n-propyl-O{8 pyrazolo(1,5-a)-pyrimidin-(2) yl{9 -thionothiolphosphoric acid esters

摘要

O-Ethyl-S-n-propyl-O-[pyrazolo(1,5a)-pyrimidin(2)-yl]-thionothiolphosp horic acid esters of the formula <IMAGE> (I) in which R is hydrogen or halogen, R1 is alkyl with 1 to 5 carbon atoms or hydrogen, R2 is hydrogen, halogen or acetyl, and R3 is hydrogen, alkyl with 1 to 4 carbon atoms or carbalkoxy with 1 to 4 carbon atoms in the alkyl radical, WHICH POSSESS ARTHROPODICIDAL AND NEMATICIDAL PROPERTIES.