Abstract: A method for producing a compound of a formula (3), including reacting a compound of a formula (1) with a compound of a formula (2) by using a tertiary alcohol and a base: where R1, R2, R3, R4, R5, R6, R7, R8, and R9 are each independently a hydrogen atom, a halogen atom, a (C1-C4)alkyl, or a (C1-C4)alkoxy, the amount of the base used is 2.0-4.0 equivalents per 1 equivalent of the compound of formula (2), the amount of the tertiary alcohol used is 0.3-2.5 equivalents per 1 equivalent of the compound of formula (2), the base is a plurality of compounds comprising a lithium-containing base as a first compound, and a second compound selected from the group consisting of alkali metal hydrides, alkali metal amides, alkoxides, alkyl metals, alkali metals, and organic bases, and the reaction is performed in the presence of an aromatic hydrocarbon solvent.

Abstract: A method for producing a nitroso compound of the following formula (3), comprising reacting a compound of the following formula (1) with a compound of the following formula (2) by using a tertiary alcohol and a base. wherein R1, R2, R3, R4, R5, R6, R7, R8, and R9 are each independently a hydrogen atom, a halogen atom, a (C1-C4) alkyl, or a (C1-C4) alkoxy.

Abstract: A method for producing a nitroso compound of the following formula (3), comprising reacting a compound of the following formula (1) with a compound of the following formula (2) by using a tertiary alcohol and a base. wherein R1, R2, R3, R4, R5, R6, R7, R8, and R9 are each independently a hydrogen atom, a halogen atom, a (C1-C4) alkyl, or a (C1-C4) alkoxy.

Abstract: The present invention is to provide an oxopyrazine derivative having an excellent herbicidal activity and besides exhibiting high safety for useful crops and the like, or a salt thereof, and a herbicide containing the same. The present invention relates to an oxopyrazine derivative represented by formula [I]: wherein X1 represents an oxygen atom or a sulfur atom; X2 represents CH or N(O)m; m represents an integer of 0 or 1; R1 represents a hydrogen atom, a C1-C12 alkyl group and the like; R2 represents a halogen atom, a cyano group and the like; R3 is a hydroxyl group, a halogen atom and the like; A1 represents C(R4R5); A2 represents C(R6R7) or C?O; A3 represents C(R8R9); R4 to R9 represent a hydrogen atom or an alkyl group, or a salt thereof, and a herbicide containing these compounds.

Abstract: The present invention is to provide an oxopyrazine derivative having an excellent herbicidal activity and besides exhibiting high safety for useful crops and the like, or a salt thereof, and a herbicide containing the same. The present invention relates to an oxopyrazine derivative represented by formula [I]: wherein X1 represents an oxygen atom or a sulfur atom; X2 represents CH or N(O)m; m represents an integer of 0 or 1; R1 represents a hydrogen atom, a C1-C12 alkyl group and the like; R2 represents a halogen atom, a cyano group and the like; R3 is a hydroxyl group, a halogen atom and the like; A1 represents C(R4R5); A2 represents C(R6R7) or C?O; A3 represents C(R8R9); R4 to R9 represent a hydrogen atom or an alkyl group, or a salt thereof, and a herbicide containing these compounds.

Abstract: The present invention is to provide an oxopyrazine derivative having an excellent herbicidal activity and besides exhibiting high safety for useful crops and the like, or a salt thereof, and a herbicide containing the same. The present invention relates to an oxopyrazine derivative represented by formula [I]: wherein X1 represents an oxygen atom or a sulfur atom; X2 represents CH or N(O)m; m represents an integer of 0 or 1; R1 represents a hydrogen atom, a C1-C12 alkyl group and the like; R2 represents a halogen atom, a cyano group and the like; R3 is a hydroxyl group, a halogen atom and the like; A1 represents C(R4R5); A2 represents C(R6R7) or C?O; A3 represents C(R8R9); R4 to R9 represent a hydrogen atom or an alkyl group, or a salt thereof, and a herbicide containing these compounds.

Abstract: A difluoroalkene derivative which is sufficiently effective in controlling various pests even when used in a small dose and is highly safe for crops, natural enemies to the pests, and animals; and an intermediate for the derivative.

Abstract: A difluoroalkene derivative which is sufficiently effective in controlling various pests even when used in a small dose and is highly safe for crops, natural enemies to the pests, and animals; and an intermediate for the derivative. The difluoroalkene derivative is represented by the general formula: [I] wherein L1 and L2are the same or different and each represents oxygen or sulfur; n is an integer of 2 to 8; and Q represents a 5- to 12-membered heterocyclic group having any desired heteroatom selected among nitrogen, oxygen, and sulfur.

Abstract: It is to provide a novel fungicide having high controlling effects on plant diseases particularly on wheat powdery mildew and cucumber gray mold, without ill effects on crops. A carbamate derivative represented by the general formula [I] {wherein X is a halogen atom, a C1-C6 alkyl group or the like, n is 0 or an integer of from 1 to 4, R1 is a C1-C6 alkyl group, R2 is a hydrogen atom, a C1-C6 alkyl group or the like, R3 is a hydrogen atom or a C1-C6 alkyl group, G is an oxygen atom, a sulfur atom or the like, Y is a hydrogen atom, a C1-C10 alkyl group, C2-C10 alkenyl group or the like, and Q is a hydrogen atom, a C1-C6 haloalkyl group, a phenyl group or the like} and an agricultural/horticultural fungicide containing the same as the active ingredient.