PYRIDAZINONE DERIVATIVES, PROCESS FOR PREPARATION THEREOF, AND INSECTICIDAL COMPOSITIONS

摘要

Novel 3(2H)-pyridazinone derivatives of the formula ( I ): ( I ) wherein, X represents a halogen, an alkyl, a haloalkyl, a haloalkoxy atoms, NO2, an aLkoxy or (wherein, R represents an alkyl); n is 1 to 4; A represents hydrogen, a halogen, an alkyl or an alkoxy; B represents CX, (wherein, X, represents H or a halogen) or N; R1 and R2 represent each independently H or ao alkyl; E represents H, a halogen. an alkoxy or -OH: and Q represents: (wherein, Y. represents a halogen, an alkyl, an alkoxy, a haloalkyl, haloalkoxy, CN, (wherein, Z represents a halogen, an alkyl, an alkoxy or a haloalkyl atoms, and ? is 0, 1 to 5, said Z being the same or different when ? is 2 to 5); and m is 1 to 5, said Y being the same or different when m is 2 to 5 ) , said X being the same or different when n is 2 to 4. A process for preparation of said derivatives is also provided. These derivatives are useful as an active ingredient of insecticidal composition.