| abstract |
A 3(2H)-pyridazinone derivative of the general formula (I):whereinR is a straight or branched C<sub>2</sub> -C<sub>6</sub> alkyl,A is a straight or branched C, -C<sub>6</sub> alkyl or a halogen atom,X is -O-or -S-,R' and R<sup>2</sup> are each independently hydrogen atom or C, -C<sub>3</sub> alkyl,-N-B is -CH = CH-, -N = CH-. -N = N-, -S-, -O-or- wherein R<sup>3</sup> is hydrogen or C. -C<sub>3</sub> alkyl, <sup>R</sup>Y is a halogen atom, a straight or branched C, -C<sub>6</sub> alkyl, a C<sub>3</sub> -C<sub>6</sub> cycloalkyl or cycloalkoxy, a straight or branched C, -C<sub>6</sub> alkoxy or alkylthio, a straight or branched C, -C<sub>6</sub> alkysulfinyl or alkylsulfonyl, a C, - C<sub>4</sub> haloalkyl or haloalkoxy, a C. -C<sub>4</sub> haloalkylthio. a C<sub>2</sub> -C<sub>4</sub> alkoxycarbonyl, trimethylsilyl. a C -C<sub>4</sub> alkoxylcarbonyl, dimethylamino, nitro, cyano, wherein Z is a halogen atom, a straight or branched C, -C<sub>6</sub> alkyl or alkoxy, a C<sub>3</sub> -C<sub>6</sub> cycloalkyl, a C, -C<sub>4</sub> haloalkyl, a C. -C<sub>4</sub> alkoxycarbonyl or nitro, ℓ is 0 or an integer of 1 to 5, and when t is a number of 2 to 5, Z may be same or different, orY is -O-W, W is a group of the formula:in which R<sup>4</sup>, R<sup>5</sup> and R<sup>6</sup> are each independently hydrogen atom or a C, -C<sub>4</sub> alkyl.R' is C, -C<sub>3</sub> hydrogen atom or an alkyl or alkoxyl,R<sup>6</sup> is a straight or branched C, -C<sub>6</sub> alkyl, a C3 -C<sub>6</sub> cycloalkyl or a C<sub>3</sub> -C<sub>6</sub> alkenyl or alkynyl,<sub>E</sub> is -O-, -S-, -SO-, -SO<sub>2</sub>-,-or-, wherein R' is a straight or branched C<sub>1</sub>-C<sub>4</sub> alkyl, or R<sup>8</sup> and R' together may form 5-or 6-membered ring.m is 0 or an integer of 1 to 3, n is 0 or an integer of 1 to 3, and when n is 2 or 3, Y may be same or different, with the proviso that when B is - CH=CH-, n is an integer of 1 to 3 and at least one of Y is -0-W.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. |