Phosphoric and thiophosphoric esters of 5(3)-hydroxypyrazoles exerting an insecticidal action

摘要

Phosphoric or thiophosphoric esters of 5(3)-hydroxypyrazoles are disclosed having the formula: <IMAGE> wherein: R=H; alkyl with 1-7 carbon atoms optionally substituted with halogens, CN, and carboalkoxy groups; phenyl optionally substituted; benzyl; alkenyl; or alkynyl; X=halogen; -SR; -OR; -N(R)2; or <IMAGE> where Y is equal to or different from each other, and =H; C1-C3 alkyl; halogen; -SR; -OR; or -N(R)2; Z=S; or O; and R1 and R2, equal to or different from each other, are: alkoxyls; alkyls; phenyls; or alkylthio- or alkylamino-groups. These are useful as insecticides, acaricides and nematodacides.