- NOXIOUS ARTHROPOD CONTROL AGENT CONTAINING AMIDE COMPOUND
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An object of the present invention is to provide a compound having the controlling activity on a noxious arthropod, and a noxious arthropod controlling agent containing an amide compound of formula (I): wherein X represents a nitrogen atom or a CH group, p represents 0 or 1, A represents a tetrahydrofuranyl group or the like, R1, R2, R3, R4, R5, R6 and R7 represent a hydrogen atom or the like, n represents 1 or 2, Y represents an oxygen atom or the like, m represents any integer of 0 to 7, and Q represents a C1-8 chain hydrocarbon group optionally having a phenyl group or the like, has the excellent noxious arthropod controlling effect.
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- A process for the preparation of aromatic ureas
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A process for preparing aromatic ureas having the general formula I: wherein each of R1 and R3 independently represents a hydrogen atom, an alkyl or cycloalkyl group, R2 represents an optionally substituted aryl or heteroaryl group, and R4 represents an alkyl, alkenyl, alkynyl or alkoxy group, or an optionally substituted cycloalkyl, aryl or heteroaryl group, which process comprises reacting an aromatic amine having the general formula II: wherein R1 and R2 are as hereinbefore defined, or a symmetrical aromatic urea having the general formula III: wherein R1 and R2 are as hereinbefore defined, with an amine having the general formula IV: wherein R3 and R4 are as hereinbefore defined, and carbon monoxide in the presence of a catalyst comprising: a) palladium; b) an organo-nitrogen or organo-phosphorous ligand having a lone pair of electrons; and c) a metal salt comprising a cation of a metal selected from the group consisting of copper, iron, vanadium chromium, zinc, tin, uranium and cerium, and an anion of an acid having a pK of less than 2, except of a hydrohalogenic acid.
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- Herbicidal method for fallow land
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A method for controlling unwanted vegetation in fallow land, particularly in fallow wheatland, employing a 3-isoxazolylurea herbicide is described.
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- Process for the production of urea derivatives
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Urea derivatives of the formula STR1 (wherein Ar represents a residue of 5- or 6-membered heteroaromatic ring; R represents a hydrogen atom or a C1 -C6 alkyl group; R1 represents a C1 -C6 alkyl group; and R2 represents a C1 -C6 alkyl, C2 -C6 alkenyl, or C1 -C6 alkoxy group) are produced by reacting an amine of the formula (wherein Ar and R have the significance given above) with a carbamoyl halogenide of the formula STR2 (wherein X represents a halogen atom, and R1 and R2 have the significance given above) in the presence of a Lewis acid in an inert solvent.
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- Process for preparing 3-isoxazolylurea derivatives
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3-Isoxazolylurea derivatives of the formula: STR1 (wherein R represents hydrogen, C1 -C6 alkyl, or C6 -C8 aryl; R1 represents hydrogen or C1 -C6 alkyl; R2 represents C
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