Pyridazinone derivatives, preparation thereof, and insecticidal, acaricidal, nematicidal, fungicidal compositions.

摘要

Novel pyridazinone derivatives of the general formula (I):
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wherein R represents a straight or branched chain alkyl group having 2 to 6 carbon atoms, A represents halogen atom, alkoxy group having 1 to 4 carbon atoms or alkylthio group having 1 to 4 carbon atoms, X represents oxygen atom or sulfur atom,
B represents
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Y represents oxygen atom, sulfur atom,
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V represents oxygen atom or sulfur atom,
R<1> and R<2> represent independently hydrogen atom or alkyl having 1 to 4 carbon atoms,
R<3> and R<6> represent independently hydrogen atom, halogen atom, alkyl having 1 to 4 carbon atoms, cyano group, haloalkyl group having 1 to 4 carbon atom or alkoxycarbonyl group having 1 to 4 carbon atoms, R<7> represents alkyl group having 1 to 4 carbon atoms or alkylcarbonyl group having 1 to 4 carbon atoms and Z represents various specific organic groups. A process for preparation of said derivatives is also provided. These derivatives are useful as an active ingredient of insecticidal, acaricidal, nematicidal and/or fungicidal compositions for agricultural and horticultural uses as well as of expellent compositions for ticks parasitic on animals.