Abstract: A compound represented by the following formula (A) has excellent control efficacy against weeds, and shows high safety against useful plants.

Abstract: A compound represented by the following formula (A) has excellent control efficacy against weeds, and shows high safety against useful plants.

Abstract: The present invention provides a compound represented by formula (1), which has an excellent control efficacy against weeds, and is thus useful as an active ingredient for herbicidal composition.

Abstract: The present invention provides a compound represented by formula (1), which has an excellent control efficacy against weeds, and is thus useful as an active ingredient for herbicidal composition.

Abstract: Provided is a method for producing a compound represented by formula (2-b), which is useful as an intermediate for producing agricultural chemicals. The method includes a step for obtaining a compound represented by formula (2-a) by oxidizing the compound represented by formula (1) with hydrogen peroxide in the presence of sulfuric acid and/or a C1-6 alkanesulfonic acid that may be halogen-substituted and in the presence of a C2-12 aliphatic carboxylic acid and/or sulfolane. The method also includes a step for obtaining a compound represented by formula (2-b) by nitrating a compound represented by formula (2-a) in the presence of sulfuric acid and/or a C1-6 alkanesulfonic acid that may be halogen-substituted.

Abstract: Provided is a method for producing a compound represented by formula (2-b), which is useful as an intermediate for producing agricultural chemicals. The method includes a step for obtaining a compound represented by formula (2-a) by oxidizing the compound represented by formula (1) with hydrogen peroxide in the presence of sulfuric acid and/or a C1-6 alkanesulfonic acid that may be halogen-substituted and in the presence of a C2-12 aliphatic carboxylic acid and/or sulfolane. The method also includes a step for obtaining a compound represented by formula (2-b) by nitrating a compound represented by formula (2-a) in the presence of sulfuric acid and/or a C1-6 alkanesulfonic acid that may be halogen-substituted.

Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.

Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.

Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.

Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.

Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.

Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.

Abstract: A method comprising an oximation step of reacting a formylalkenylcyclopropanecarboxylic acid ester represented by the formula (1): (wherein, R1 represents an alkyl group optionally having substituent(s) or halogen atom(s), and R2 represents an alkyl group optionally having substituent(s) or a benzyl group optionally having substituent(s)) and hydroxylamine in a solvent in the presence at least one compound selected from the group consisting of carboxylic acids and carboxylic acid metal salts, to produce a hydroxyiminoalkenylcyclopropanecarboxylic acid ester represented by the formula (3): (wherein, R1 and R2 are as defined above).

Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.

Abstract: A pyridazinone compound represented by the formula (I) have excellent effect on weed control and are useful as an active ingredient of herbicides.

Abstract: A process as represented by reaction scheme: which permits industrial mass production of &Dgr;2-1,2,4-oxadiazoline derivatives having excellent insecticidal effects or salts thereof in high yield with advantage, [wherein X1 is halogeno; R1 is optionally substituted alkyl, optionally substituted acyl, or ClCO; R2 is (1) halogeno, (2) C1-6 haloalkyl, (3) C1-6 haloalkoxy, or (4) phenyl optionally substituted with C1-6 haloalkyl; A is nitrogen or ═CR3— (wherein R3 is Cl or CN); R4 is C1-6 alkyl or C1-6 haloalkyl; n is 0, 1 or 2; and X2 is halogeno].

Abstract: A compound of the formula: wherein Ar is an optionally substituted aromatic hydrocarbon or aromatic heterocyclic group, R is H, halogen or a group bonded through C, N, O, S or P, W is halogen or a group bonded through C, N, O, S or P, X is H or a group bonded through C, N, O or S, Y is H or a group bonded through C, N, O, S or P, or X and Y together with the adjacent nitrogen atom to Y may form an optionally substituted nitrogen-containing heterocyclic group which may further have N, O, S and/or P, or a salt thereof, a method of production thereof and agrochemicals containing the above compound [I]. The compound [I] and their salts are effective in preventing sanitary or horticultural insect pests and animal and plant parasites and can exert potent insecticidal activities when they are applied to harmed living animals or plants.

Abstract: The present invention relates to a compound of the formula [I]: wherein R1 is C1-6 alkyl or C1-6 haloalkyl; n is 0, 1 or 2; X is (1) group of —NR2R3 wherein R2 and R3 independently represent (i) hydrogen or (ii) C1-6 alkyl which may optionally be substituted with pyridyl, (2) group of —N═CHOR4 wherein R4 represents C1-6 alkyl, (3) group of —N═CHNR6R7 wherein R6 and R7 independently represent (i) hydrogen or (ii) C1-6 alkyl, (4) group of —N═CHAr wherein Ar represents phenyl which may optionally be substituted with substituents selected from the group consisting of hydroxy and C1-3 alkoxy, or (5) pyrrolyl; R5 is optionally substituted alkyl or optionally substituted acyl; R8 is (1) halogen, (2) C1-6 haloalkyl, (3) C1-6 haloalkoxy or (4) phenyl which may optionally be substituted with C1-6 haloalkyl; A is (1) nitrogen atom or (2) group of wherein R9 is chlorine atom or cyano; and B is nitrogen atom or or a sa