| 摘要 |
<p>Novel 3(2H)-pyridazinone derivatives having the general formula (I): <IMAGE> (I) wherein, R denotes a straight or branched C1 to C6 alkyl; A denotes a straight or branched C1 to C6 alkyl or a halogen; X denotes oxygen or sulfur atom; Q denotes a group; <IMAGE> when A is a straight or branched C1 to C6 alkyl, and Q denotes a group: <IMAGE> when A is a halogen atom; R1 and R2 denote each independently hydrogen, a lower alkyl, a lower haloalkyl, or 4-tert-butylphenyl; B denotes -CR6=CR7-, -CR6R7O-, or <IMAGE> (wherein, R6 and R7 denote various specific organic radicals. 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.</p> |
