PYRIDAZINONE DERIVATIVES,PREPARATION THEREOF,AND INSECTICIDAL,ACARICIDAL,NEMATICIDAL,FUNGICIDAL COMPOSITIONS

摘要

NEW MATERIAL:The compound of formula I [R is H or 1-6C alkyl; R<1> and R<2> are H, alkyl or haloalkyl; X is O or S; A is halogen or 1-6C alkyl; B is group of formula II, -CR<3>R<4>O-CR<3>R<4>-(R<3> and R<4> are H or 1-4C alkyl); m is 0 or 1; Q is (substituted) heterocyclic group containing 1-3 hetero-atoms and bonded via C atom, etc.]. EXAMPLE:2-t-Butyl-5-(5-t-butyl-2-thienylmethylthio)-4-methyl-3-(2-H)-p yridazinone. USE:Insecticidal, miticidal, nematocidal and fungicidal agent for agricultural and horticultural use, and repellent for mite parasitic to animal. PREPARATION:The compound of formula I can be produced by reacting the compound of formula III (X' is halogen, SH or OH) with the compound of formula IV (X'' is SH or OH when X' is halogen, and is halogen when X' is SH or OH) in a solvent, preferably in the presence of a base.