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  Fungicidal composition and method for controlling plant diseasesRelated Patent Categories: Drug, Bio-affecting And Body Treating Compositions, Designated Organic Active Ingredient Containing (doai), Heterocyclic Carbon Compounds Containing A Hetero Ring Having Chalcogen (i.e., O,s,se Or Te) Or Nitrogen As The Only Ring Hetero Atoms Doai, Hetero Ring Is Six-membered Consisting Of One Nitrogen And Five Carbon Atoms, Nitrogen Attached Directly To The Six-membered Hetero Ring By Nonionic Bonding, At 3-positionThe Patent Description & Claims data below is from USPTO Patent Application 20060194849. Brief Patent Description - Full Patent Description - Patent Application Claims
TECHNICAL FIELD [0001] The present invention relates to a fungicidal composition useful as an agricultural and horticultural fungicide having remarkably improved preventive and/or curative effects against plant diseases, and a method for controlling plant diseases by using such a composition. BACKGROUND ART [0002] WO02/2527 discloses that a benzoylpyridine derivative which is an active ingredient of the fungicidal composition in the present invention is useful as a fungicide and may be used in combination with another fungicide as the case required. However, it has not been known that the composition of the present invention has a remarkably excellent fungicidal effect. [0003] Patent Document 1: WO02/2527 DISCLOSURE OF THE INVENTION PROBLEMS THAT THE INVENTION IS TO SOLVE [0004] Each of benzoylpyridine derivatives represented by the formula (I) given hereinafter, may have an inadequate controlling effect against a specific plant disease, its residual effect may last only a relatively short time or its rainfastness may be weak, and it has only an inadequate controlling effect against plant diseases practically depending upon the application site. MEANS OF SOLVING THE PROBLEMS [0005] The present inventors have conducted a research to solve the above problems and as a result, found that when a benzoylpyridine derivative represented by the formula (I) given hereinafter and a specific fungicide are used in combination, an unexpectedly excellent fungicidal effect can be obtained as compared with a case where the respective compounds are used alone. [0006] Namely, the present invention provides a fungicidal composition containing as active ingredients (a) a benzoylpyridine derivative represented by the formula (I) or its salt: (wherein X is a halogen atom, a nitro group, a substitutable hydrocarbon group, a substitutable alkoxy group, a substitutable aryloxy group, a substitutable cycloalkoxy group, a hydroxyl group, a substitutable alkylthio group, a cyano group, a carboxyl group which may be esterified or amidated, or a substitutable amino group, n is 1, 2, 3 or 4; R.sup.1 is a substitutable alkyl group, R.sup.2' is a substitutable alkyl group, a substitutable alkoxy group, a substitutable aryloxy group, a substitutable cycloalkoxy group or a hydroxyl group, p is 1, 2 or 3, and R.sup.2'' is a substitutable alkoxy group or a hydroxyl group, provided that at least two of R.sup.2' and R.sup.2'' may form a condensed ring containing an oxygen atom) and (b) at least one fungicide selected from the group consisting of a strobilurin compound, an azole compound, a morpholine compound, a pyrimidinamine compound, a guanidine compound, an organic chlorine compound, an imidazole compound, an antibiotic, a pyridinamine compound, a quinoxaline compound, a dithiocarbamate compound, a cyanoacetamide compound, a phenylamide compound, a sulfenic acid compound, a copper compound, an isoxazole compound, an organophosphorus compound, a N-halogenothioalkyl compound, a dicarboxyimide compound, a benzanilide compound, piperazine compound, a pyridine compound, a carbinol compound, a piperidine compound, an organotin compound, an urea compound, a cynnamic acid compound, a phenyl carbamate compound, a cyanopyrrole compound, an oxazolidinone compound, a thiazole carboxyamide compound, a silyl amide compound, an aminoacid amidecarbamate compound, an imidazolidine compound, a hydroxyanilide compound, an oxime ether compound, a phenoxyamide compound, a benzophenone compound, Isoprothiolane, Pyroquilon, Dichlomezine, Quinoxyfen, Propamocarb Hydrochloride, Chloropicrin, Dazomet, Metam-sodium, Nicobifen, Diclocymet and Proquinazid. The present invention further provides a method for controlling plant diseases, which comprises applying the above fungicidal composition to plants. [0007] In the formula (I), the halogen atom is fluorine, chlorine, bromine or iodine, and it may, for example, be preferably fluorine, chlorine or bromine. [0008] The hydrocarbon moiety in the substitutable hydrocarbon group in the formula (I) may, for example, be a C.sub.1-6 alkyl (such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl or t-butyl), a C.sub.2-6 alkenyl (such as vinyl, allyl, isopropenyl or 3-methyl-2-butenyl), a C.sub.2-6 alkynyl (such as ethynyl, 1-propynyl or 2-propynyl), a C.sub.3-6 cycloalkyl (such as cyclopropyl, cyclopentyl or cyclohexyl) or a C.sub.6-10 aryl. Further, the secondary substituent in the substitutable hydrocarbon group may, for example, be the same or different one to five substituents selected from the group consisting of aryl, aryloxy, hydroxy, nitro, nitroxy, halogen (such as fluorine, chlorine, bromine or iodine), haloalkoxy (such as a C.sub.1-4 haloalkoxy, for instance CF.sub.3O or HCF.sub.2O), cycloalkyl, amino, alkylthio and cyano. Among these substitutable hydrocarbon groups, a substitutable alkyl group is preferred, and an alkyl group is particularly preferred. Further, among alkyl groups, a C.sub.1-4 alkyl group is most preferred. [0009] The alkyl moiety in the substitutable alkyl group, the substitutable alkoxy group and the substitutable alkylthio group in the formula (I) is preferably a C.sub.1-6 alkyl (such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl or t-butyl), particularly preferably a C.sub.1-4 alkyl. Further, the secondary substituent in these substituents may be the same or different one to five substituents selected from the group consisting of aryl, aryloxy, hydroxy, nitro, nitroxy, halogen (such as fluorine, chlorine, bromine or iodine), haloalkoxy (such as a C.sub.1-4 haloalkoxy, for instance CF.sub.3O or HCF.sub.2O), cycloalkyl, amino, alkylthio and cyano. Among such substituents having an alkyl moiety, a non-substituted substituent is preferred, a C.sub.1-4 alkyl is particularly preferred, and methyl is most preferred. [0010] The aryl moiety in the substitutable aryloxy group in the formula (I) may be phenyl, or a condensed polycyclic group such as naphthyl, but it is preferably phenyl. Further, the secondary substituent, for instance substitutable group may, for example, be halogen, alkyl, alkoxy or hydroxy. [0011] The cycloalkyl moiety in the substitutable cycloalkoxy group in the formula (I) consists of three to ten carbons, and it may, for example, be a monocyclic group such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl or cyclooctyl, or a condensed polycyclic group, but it is preferably a monocyclic group. Further, the secondary substituent in these substitutable groups may, for example, be halogen, alkyl, alkoxy or hydroxy. Among the cycloalkoxy moieties, cyclohexyloxy is most preferred. [0012] The carboxyl group which may be esterified or amidated in the formula (I) may, for example, be a carboxyl group which may be esterified, such as a C.sub.1-6 alkoxycarbonyl group (such as a methoxycarbonyl group, an ethoxycarbonyl group, a propoxycarbonyl group, an isopropoxycarbonyl group, a butoxycarbonyl group, an isobutoxycarbonyl group or a t-butoxycarbonyl group), a nitroxy C.sub.1-4 alkoxyaminocarbonyl group (such as a 2-nitroxyethoxycarbonyl group or a 3-nitroxypropoxycarbonyl group) or a phenyl C.sub.1-4 alkoxycarbonyl group (such as a benzyloxycarbonyl group or a phenethyloxycarbonyl group); or a carboxyl group which may be amidated, such as a carbamoyl group, a C.sub.1-6 monoalkylaminocarbonyl group (such as a methylaminocarbonyl group, an ethyaminocarbonyl group, a propylaminocarbonyl group, an isopropylaminocarbonyl group, a butylaminocarbonyl group, an isobutylaminocarbonyl group or a t-butylaminocarbonyl group), a di C.sub.1-6 alkylaminocarbonyl group (such as a dimethylaminocarbonyl group, a diethylaminocarbonyl group, a dipropylaminocarbonyl group, a diisopropylaminocarbonyl group, a dibutylaminocarbonyl group or an isodibutylaminocarbonyl group), a nitroxy C.sub.1-4 alkylaminocarbonyl group (such as a 2-nitroxyethylaminocarbonyl group or a 3-nitroxypropylaminocarbonyl group), a phenyl C.sub.1-4 alkylaminocarbonyl group (such as a benzylaminocarbonyl group or a phenethylaminocarbonyl group), a C.sub.3-6 cycloalkylaminocarbonyl group (such as a cyclopropylaminocarbonyl group, a cyclopentylaminocarbonyl group or a cyclohexylaminocarbonyl group), a cyclic aminocarbonyl group (such as a morpholinocarbonyl group, a piperidinocarbonyl group, a pyrrolidinocarbonyl group or a thiomorpholinocarbonyl group) or an aminocarbonyl group. [0013] The substitutable amino group in the formula (I) may, for example, be an amino group; or an alkylamino group such as a monoalkylamino group or a dialkylamino group. The alkyl moiety in the alkylamino group is preferably a C.sub.1-4 alkyl. Further, the secondary substituent in the substitutable amino group may be the same or different one to five substituents selected from aryl, aryloxy, hydroxy, nitro, nitroxy, halogen (such as fluorine, chlorine, bromine or iodine), haloalkoxy (such as a C.sub.1-4 haloalkoxy group, for instance CF.sub.3O or HCF.sub.2O), cycloalkyl, amino, alkylthio and cyano. [0014] In the above secondary substituents in the above-mentioned respective substituents, the aryl moiety, the cycloalkyl moiety and the alkyl moiety are as defined for the respective substituents. [0015] The compound represented by the formula (I) may form a salt together with an acidic substance, and it may form, for example, an inorganic acid salt such as a hydrochloride, a hydrobromide, a phosphate, a sulfate or a nitrate; or an organic acid salt such as an acetate, a benzoate, a p-toluenesulfonate, a methanesulfonate or a propanesulfonate. [0016] The compounds represented by the formula (I) may be prepared by a production process as disclosed in WO02/2527. Further, they may be produced also by a method in accordance with Journal of Organic Chemistry, 58, 7832 (1993), European Journal of Organic Chemistry, 7, 1371-1376 (2001) or Preparation Examples given hereinafter. [0017] The strobilurin compound may, for example, be Kresoxim-Methyl, Azoxystrobin, Metominofen, Trifloxystrobin, Picoxystrobin, Oryzastrobin, Dimoxystrobin or Fluoxastrobin. Among them, Kresoxim-Methyl and Azoxystrobin are preferred. [0018] Kresoxim-Methyl is a compound disclosed in The Pesticide Manual (Twelfth Edition, BRITISH CROP PROTECTION COUNCIL), p. 568-569. Further, Azoxystrobin is a compound disclosed in The Pesticide Manual (Twelfth Edition, BRITISH CROP PROTECTION COUNCIL), p. 54-55. [0019] The azole compound may, for example, be Epoxiconazole, Triflumizole, Oxpoconazole fumarate, Tebuconazole, Imibenconazole, Tetraconazole, Triadimefon, Bitertanol, Etaconazole, Propiconazole, Penconazole, Flusilazole, Myclobutanil, Cyproconazole, Hexaconazole, Furconazole-cis, Prochloraz, Metconazole, Sipconazole, Prothioconazole, Simeconazole, Tricyclazole, Probenazole, Fluquinconazole or Triadimenol. Among them, Epoxiconazole, Triflumizole, oxpoconazole fumarate, Tebuconazole, Imibenconazole, Tetraconazole, Cyproconazole, Metconazole, Fluquinconazole and Triadimenol are preferred. Continue reading... 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