WO2010103783A1 - 1-アルキル-5-ベンゾイル-1h-テトラゾール誘導体の製造方法 - Google Patents
1-アルキル-5-ベンゾイル-1h-テトラゾール誘導体の製造方法 Download PDFInfo
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- WO2010103783A1 WO2010103783A1 PCT/JP2010/001597 JP2010001597W WO2010103783A1 WO 2010103783 A1 WO2010103783 A1 WO 2010103783A1 JP 2010001597 W JP2010001597 W JP 2010001597W WO 2010103783 A1 WO2010103783 A1 WO 2010103783A1
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- 0 CC=CC(C(C(*)=N*)=O)=C* Chemical compound CC=CC(C(C(*)=N*)=O)=C* 0.000 description 4
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/713—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with four or more nitrogen atoms as the only ring hetero atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D257/00—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms
- C07D257/02—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D257/04—Five-membered rings
Definitions
- the present invention relates to a method for producing a 1-alkyl-5-benzoyl-1H-tetrazole derivative. More particularly, the present invention provides a compound of formula (I) that is relatively easy to manufacture and obtain.
- A represents a halogen atom, an alkyl group, a haloalkyl group, an alkoxy group, a haloalkoxy group, an alkylsulfonyl group, an unsubstituted or substituted aryl group, a cyano group, or a nitro group.
- A represents an integer of 0 to 5 (when n is 2 or more, A's may be the same or different from each other.
- Y represents an alkyl group).
- the present invention relates to a method for producing a 1-alkyl-5-benzoyl-1H-tetrazole derivative using a ketoamide derivative as a starting material.
- Patent Document 1 discloses a tetrazoyl oxime derivative (formula (1-a)) having an excellent medicinal effect on useful plants, and it has been proposed to use it as a plant disease control agent.
- A is a halogen atom, an alkyl group, an alkoxy group, a methanesulfonyl group, a trifluoromethyl group, an aryl group, a cyano group or a nitro group; n is any one of 0 to 5 Y is an alkyl group; Het is a pyridyl group having a substituent or a thiazoyl group having a substituent.
- the tetrazoyl oxime derivative represented by the formula (1-a) is represented by the formula (V) by reacting a 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV) with hydroxylamine.
- Tetrazoylhydroxyimino derivative which is then added to a base (eg sodium hydride, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, cesium carbonate, triethylamine, pyridine, N, N-dimethylamino It can be produced by reacting Het-CH2L (wherein L is a chlorine atom, a bromine atom or an iodine atom) in the presence of pyridine or the like.
- the 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV) as a raw material for this reaction can be obtained by the method described in Non-Patent Document 1. That is, a tetrazole derivative represented by the formula (b-1) is reacted with an organolithium compound to obtain a derivative represented by the formula (b-2), which is then an ester represented by the formula (b-3). A compound represented by the formula (b-4) is obtained by reacting the compound, and an acid is allowed to act on the derivative to obtain a 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV). Can do.
- an object of the present invention is to provide a method for producing a 1-alkyl-5-benzoyl-1H-tetrazole derivative starting from another raw material.
- the present inventors reacted a ketoamide derivative represented by the formula (I), which is relatively easy to produce and obtain as a starting material, with a halogenating agent to give a formula ( II) is obtained, and the resulting imidoyl halide derivative is reacted with an azide represented by the formula (III) to give a 1-alkyl-5- It was found that a benzoyl-1H-tetrazole derivative can be easily obtained. The present invention has been completed based on this finding.
- the present invention Reacting the ketoamide derivative represented by the formula (I) with a halogenating agent to obtain an imidoyl halide derivative represented by the formula (II);
- An imidoyl halide derivative represented by the formula (II) is reacted with an azide represented by the formula (III) to obtain a 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV)
- A represents a halogen atom, an alkyl group, a haloalkyl group, an alkoxy group, a haloalkoxy group, an alkylsulfonyl group, an unsubstituted or substituted aryl group, a cyano group, or a nitro group.
- n represents an integer of 0 to 5 (when n is 2 or more, A's may be the same or different from each other.
- Y represents an alkyl group.
- M represents an alkali metal or an alkaline earth metal. M represents 1 or 2.
- the halogenating agent is preferably at least one selected from the group consisting of phosgene, oxalyl chloride, thionyl chloride, and phosphorus oxychloride.
- the azide represented by the formula (III) is preferably sodium azide.
- chloroform, methylene chloride or benzene is preferably used as the solvent.
- the hydroxylamine or a salt thereof is allowed to act on the 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the above formula (IV) obtained by the above method, to thereby give the formula (V) (In formula (V), A, n, and Y represent the same meaning as the above.) It is a manufacturing method of the tetrazoylhydroxyimino derivative including the process of obtaining the tetrazoylhydroxyimino derivative represented.
- a ketoamide derivative represented by the formula (I) that is relatively easy to produce and obtain can be used as a starting material. Reacting a ketoamide derivative represented by formula (I) with a halogenating agent to obtain an imidoyl halide derivative represented by formula (II), and reacting this with an azide represented by formula (III) Thus, a 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV) can be easily obtained.
- the tetrazoylhydroxylimino derivative represented by the formula (V) can be easily obtained. can get.
- the 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV) and the tetrazoylhydroxylimino derivative represented by the formula (V) are useful as intermediates for producing plant disease control agents and the like. It is.
- a 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV) is reacted with hydroxylamine to obtain a tetrazoylhydroxyimino derivative represented by the formula (V).
- It is represented by the above formula (1-a) having an excellent plant disease control effect by reacting Het-CH2L (wherein L is a chlorine atom, a bromine atom or an iodine atom) in the presence of a base.
- Tetrazoyl oxime derivatives can be produced.
- the method for producing a 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV) of the present invention includes: Reacting the ketoamide derivative represented by the formula (I) with a halogenating agent to obtain an imidoyl halide derivative represented by the formula (II); Reacting an imidoyl halide derivative represented by the formula (II) with an azide represented by the formula (III) to obtain a 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV) 2 is included.
- Ketoamide derivative represented by formula (I) is an ⁇ -oxocarboxylic acid ester represented by formula (O) (wherein R in formula (O) is alkyl And the like can be obtained by amidation with YNH2. It can also be obtained by referring to a method for preparing an ⁇ -ketoamide derivative described in JP-T-2002-532466.
- the ⁇ -oxocarboxylic acid ester represented by the formula (O) can be easily produced from ⁇ -oxocarboxylic acid having a corresponding structure and its salt, ⁇ -hydroxycarboxylic acid and its salt, and the like.
- A represents a halogen atom, an alkyl group, a haloalkyl group, an alkoxy group, a haloalkoxy group, an alkylsulfonyl group, an unsubstituted or substituted aryl group, a cyano group, or a nitro group.
- the halogen atom include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- alkyl group examples include methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group, s-butyl group, t-butyl group, n-pentyl group, and n-hexyl group.
- Etc. The number of carbon atoms constituting the alkyl group is preferably 1-8.
- haloalkyl group examples include a fluoromethyl group, a chloromethyl group, a bromomethyl group, a difluoromethyl group, a dichloromethyl group, a trifluoromethyl group, a trichloromethyl group, a trifluoroethyl group, a pentafluoroethyl group, 3, 3, 3, 2 , 2-pentafluoropropyl group, 2,2,2-trifluoro-1-trifluoromethylethyl group and the like.
- the number of carbon atoms constituting the haloalkyl group is preferably 1-8.
- alkoxy group examples include a methoxy group, an ethoxy group, an n-propoxy group, an i-propoxy group, an n-butoxy group, an i-butoxy group, an s-butoxy group, a t-butoxy group, and an n-hexyloxy group. .
- the number of carbon atoms constituting the alkoxy group is preferably 1-8.
- the haloalkoxy group include a 2-chloro-n-propoxy group, a 2,3-dichlorobutoxy group, a trifluoromethoxy group, and the like.
- the number of carbon atoms constituting the haloalkoxy group is preferably 1-8.
- alkylsulfonyl group examples include a methylsulfonyl group, an ethylsulfonyl group, an n-propylsulfonyl group, an i-propylsulfonyl group, and a t-butylsulfonyl group.
- the number of carbon atoms constituting the alkylsulfonyl group is preferably 1-8.
- An aryl group means a monocyclic or polycyclic aryl group.
- the polycyclic aryl group as long as at least one ring is an aromatic ring, the remaining ring may be a saturated ring, an unsaturated ring, or an aromatic ring.
- a C 6-10 aryl group is preferred.
- Specific examples of the unsubstituted aryl group include a phenyl group, a 1-naphthyl group, a 2-naphthyl group, an azulenyl group, an indanyl group, and a tetralinyl group.
- the “substituent” in the aryl group having a substituent is not particularly limited as long as it is chemically acceptable. Specific examples include the substituents exemplified below. (1) Halogen atoms such as fluorine atom, chlorine atom, bromine atom, iodine atom; (2) methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, s-butyl group, i- Alkyl groups such as a butyl group, a t-butyl group, an n-pentyl group and an n-hexyl group; (3) a cycloalkyl group such as a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group and a cycloheptyl group; Alkoxy groups such as methoxy group, ethoxy group, n-propoxy group
- cycloalkenyl groups such as 2-cyclopropenyl group, 2-cyclopentenyl group, 3-cyclohexenyl group, 4-cyclooctenyl group; (7) vinyloxy group, allyloxy group, 1-propenyloxy group, 2-butenyloxy group (8) ethynyl group, 1-propynyl group, 2-propynyl group, 1-butynyl group, 2-butynyl group, 3-butynyl group, 1-methyl-2-propynyl group, 2-methyl- 3-butynyl group, 1-pentynyl group, 2-pentynyl group, 3-pentynyl group, 4-pentynyl group, 1-methyl-2-butynyl group, 2-methyl-3-pentynyl group, 1-hexynyl group, 1, Alkynyl groups such as 1-dimethyl-2-butynyl group; (9) Alkynyloxy groups such as ethyn
- Aryloxy groups such as phenoxy group and 1-naphthoxy group
- Aralkyl groups such as benzyl group and phenethyl group
- Aralkyloxy groups such as benzyloxy group and phenethyloxy group
- Formyl group Acyl groups such as acetyl group, propionyl group, benzoyl group, cyclohexylcarbonyl group, phthaloyl group
- (22) haloalkenyloxy groups such as 2-chloro-1-propenyloxy group and 3-bromo-2-butenyloxy group; (23) haloalkynyl groups such as 3-chloro-propargyl group and 3-iodo-propargyl group; (24) haloalkynyloxy groups such as 3-chloro-propargyloxy group and 3-iodo-propargyloxy group; (25) haloaryl groups such as 4-chlorophenyl group, 4-fluorophenyl group and 2,4-dichlorophenyl group; (26) Haloaryloxy groups such as 4-fluorophenoxy group and 4-chloro-1-naphthoxy group; (27) Halogen-substituted acyls such as chloroacetyl group, trifluoroacetyl group, trichloroacetyl group and 4-chlorobenzoyl group Group: (28) an methoxymethyl group, an e
- Heteroarylsulfonylamino groups such as pyrazinylsulfonylamino group
- Acylamino groups such as formylamino group, acetylamino group, propanoylamino group, butyrylamino group, i-propylcarbonylamino group, benzoylamino group, etc.
- alkoxycarbonylamino groups such as methoxycarbonylamino group and ethoxycarbonylamino group
- fluoromethylsulfonylamino group chloromethylsulfonylamino group, bromomethylsulfonylamino group, difluoromethylsulfonylamino group, dichloromethylsulfonyl
- Halogens such as amino group, 1,1-difluoroethylsulfonylamino group, trifluoromethylsulfonylamino group, 2,2,2-trifluoroethylsulfonylamino group, pentafluoroethylsulfonylamino group, etc.
- alkylthioalkyl groups such as methylthiomethyl group and 1-methylthioethyl group
- arylthioalkyl groups such as phenylthiomethyl group and 1-phenylthioethyl group
- Alkylthioalkoxy groups such as groups; (65) arylthioalkoxy groups such as phenylthiomethoxy groups and 1-phenylthioethoxy groups; (66) alkylsulfinyl groups such as methylsulfinyl groups, ethylsulfinyl groups and t-butylsulfinyl groups; (67) alkenylsulfinyl group such as allylsulfinyl group; (68) alkynylsulfinyl group such as propargylsulfinyl group; (69) arylsulfinyl group such as phenylsulfinyl group; (70) 2-pyridylsulfinyl group, 3-pyridylsulfinyl group Heteroaryl such as Rufiniru group; (72) 2-pyridyl-methyl sulfinyl group, a heteroaryl alkylsul
- alkylsulfonyl groups such as methylsulfonyl group, ethylsulfonyl group, t-butylsulfonyl group; (74) alkenylsulfonyl groups such as allylsulfonyl group; (75) alkynylsulfonyl groups such as propargylsulfonyl group; (76) phenyl Arylsulfonyl groups such as sulfonyl groups; (77) heteroarylsulfonyl groups such as 2-pyridylsulfonyl groups and 3-pyridylsulfonyl groups; (78) aralkylsulfonyl groups such as benzylsulfonyl groups and phenethylsulfonyl groups; Heteroarylalkylsulfonyl groups such as pyridylmethylsulfonyl group and 3-pyrid
- aryl group having a substituent examples include 4-fluorophenyl group, 4-chlorophenyl group, 2,4-dichlorophenyl group, 3,4-dichlorophenyl group, 3,5-dichlorophenyl group, and 2,6-difluorophenyl.
- A is preferably a halogen atom.
- n is an integer of 0 to 5, preferably an integer of 0 to 3, more preferably 0.
- A's may be the same or different from each other.
- Y represents an alkyl group.
- the alkyl group include methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group, s-butyl group, t-butyl group, n-pentyl group, and n-hexyl group. Etc.
- Y an alkyl group having 1 to 3 carbon atoms is preferable, and a methyl group is particularly preferable.
- halogenating agents chlorine alone (chlorine molecule), bromine alone (bromine molecule), iodine alone (iodine molecule), N-chlorosuccinimide, N-bromosuccinimide, phosphorus pentachloride, phosphoryl chloride, phosphorus oxychloride , Thionyl chloride, phosgene, oxalyl chloride, hypochlorite, hypobromite, cyanuric chloride, 2-chloro-1,3-dimethylbenzimidazolium chloride, bis (2,4,6-trimethylpyridine) 1,3-dialkyl-2-halogenoids such as bromonium hexafluorophosphate, bis (2,4,6-trimethylpyridine) iodonium hexafluorophosphate; 1,3-dialkyl-2-chloroimidazolinium chloride Linium halogenides; combinations of carbon tetrahalides and P (R1) 3 And the like.
- R1 is an alkyl group or an aryl group. Of these, phosgene, oxalyl chloride, thionyl chloride, and phosphorus oxychloride are particularly preferred.
- the amount of the halogenating agent to be used is generally 1.0 to 3.0 mol, preferably 1.5 to 2.5 mol, per 1 mol of the ketoamide derivative represented by the formula (I). By using an excessive amount of the halogenating agent, the solvent can be eliminated.
- the halogenation reaction is usually performed without a solvent or in a solvent.
- the solvent is not particularly limited as long as it is inert to the halogenation reaction.
- ester solvents such as ethyl acetate, isopropyl acetate, n-butyl acetate
- ketone solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone
- n-pentane n-hexane, cyclohexane, methylcyclohexane, n-heptane, etc.
- Saturated hydrocarbon solvents of nitriles such as acetonitrile and benzonitrile; ether solvents such as diethyl ether, diisopropyl ether, dioxane, tetrahydrofuran and 1,2-dimethoxyethane; sulfur-containing solvents such as dimethyl sulfoxide and sulfolane; N Amide solvents such as N, N-dimethylformamide, N, N-dimethylacetamide, and hexamethylphosphoramide; methylene chloride, chloroform, carbon tetrachloride, 1,2-dichloroethane, etc.
- hydrocarbon solvent benzene, toluene, and aromatic hydrocarbon solvents such as monochlorobenzene and the like. These solvents can be used alone or in combination of two or more. Among these solvents, a halogenated hydrocarbon solvent or an aromatic hydrocarbon solvent is preferable, and chloroform, methylene chloride, or benzene is more preferable.
- the amount of the solvent used is usually 0.001 to 100 parts by mass with respect to 1 part by mass of the ketoamide derivative represented by the formula (I).
- the temperature during the reaction is usually in the range of 0 ° C. to the solvent reflux temperature, preferably 10 ° C. to 50 ° C.
- the reaction time varies depending on the reaction scale, but is usually 30 minutes to 12 hours.
- the purification means is not particularly limited, and known and commonly used means such as distillation, recrystallization, extraction or column chromatography can be used.
- recovered by solvent distillation can be reused.
- M in the formula (III) represents an alkali metal or an alkaline earth metal, and m represents 1 or 2.
- the azide represented by the formula (III) include an azide of an alkali metal such as sodium or potassium, or an azide of an alkaline earth metal such as calcium or magnesium. Of these, alkali metal azides are preferred, and sodium azide is more preferred.
- the amount of the azide represented by the formula (III) is preferably 1.0 to 4.0 mol, and 1.1 to 3.3 mol per mol of the imidoyl halide derivative represented by the formula (II). 0 mole is more preferred.
- the reaction between the imidoyl halide derivative represented by the formula (II) and the azide represented by the formula (III) is usually performed in a solvent.
- the solvent is preferably a polar solvent or an aromatic hydrocarbon solvent.
- the polar solvent include N, N-dimethylformamide, N, N-dimethylacetamide, N-methylformanilide, acetonitrile, tetrahydrofuran and the like. Of these, N, N-dimethylformamide, acetonitrile and tetrahydrofuran are preferred.
- aromatic hydrocarbon solvent examples include benzene, toluene, xylene, mesitylene, ethylbenzene, chlorobenzene, nitrobenzene, cumene, chlorotoluene and the like, and among these, toluene and xylene are particularly preferable.
- the amount of the solvent used is preferably 1 to 15 ml, more preferably 3 to 10 ml with respect to 1 g of imidoyl halide derivative represented by the formula (II).
- amine salts methylamine salt, ethylamine salt, propylamine salt, butylamine salt, amylamine salt, hexylamine salt, cyclohexylamine salt, heptylamine salt, octylamine salt, allylamine salt, benzylamine salt, ⁇ -phenylethylamine salt
- Primary amine salts such as ⁇ -phenylethylamine salt; dimethylamine salt, diethylamine salt, dipropylamine salt, dibutylamine salt, diamylamine salt, dihexylamine salt, dicyclohexylamine salt, diallylamine salt, morpholine salt, piperidine salt, Secondary amine salts such as hexamethyleneimine salt; Trimethylamine salt, triethylamine salt, tripropylamine salt, tributylamine salt, triamylamine salt, tri
- the acid forming the salt is not particularly limited, and examples thereof include inorganic acids such as hydrochloric acid, hydrogen bromide, sulfuric acid, nitric acid, phosphoric acid, boric acid, hydrogen azide, chloric acid, carbonic acid, hydrogen sulfide; formic acid, acetic acid And organic acids such as trifluoroacetic acid, propionic acid, oxalic acid, methanesulfonic acid, benzenesulfonic acid, and toluenesulfonic acid.
- the amount of the amine salt used is preferably 0.1 to 1.5 mol, more preferably 0.3 to 1.0 mol, with respect to 1 mol of the imidoyl halide derivative represented by the formula (II).
- reaction time depends on the reaction scale, but is preferably about 1 to 48 hours, more preferably about 1 to 24 hours.
- the reaction can be stopped by cooling to room temperature and adding water.
- the amount of water added is preferably 2 to 15 ml, more preferably 2 to 10 ml, with respect to 1 g of imidoyl halide derivative represented by the formula (II).
- a crude product can be obtained by conventional methods such as liquid separation operation, dehumidification, filtration, and solvent distillation.
- a 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV) can be obtained by purification such as crystallization, recrystallization, column chromatography and the like. The solvent recovered by distilling off the solvent can be reused.
- A, n and Y have the same meaning as described above.
- the tetrazoylhydroxylimino derivative represented by the formula (V) can be easily obtained. can get.
- the 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV) and the tetrazoylhydroxylimino derivative represented by the formula (V) obtained by the production method of the present invention include plant disease control agents and the like. Useful as an intermediate for manufacturing. For example, from a 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV) and a tetrazoylhydroxylimino derivative represented by the formula (V), a tetrazoyl represented by the formula (1-a) Oxime derivatives can be produced.
- Tetrazoyloxime Derivative and its Salt As already described, hydroxylamine is reacted with the 1-alkyl-5-benzoyl-1H-tetrazole derivative represented by the formula (IV) obtained by the production method of the present invention. A tetrazoylhydroxyimino derivative represented by the formula (V) is obtained, and this is then reacted with Het-CH2L (where L is a chlorine atom, a bromine atom or an iodine atom) in the presence of a base. Thus, a tetrazoyloxime derivative represented by the formula (1-a) can be produced.
- A represents a halogen atom, an alkyl group, a haloalkyl group, an alkoxy group, a haloalkoxy group, an alkylsulfonyl group, an unsubstituted or substituted aryl group, a cyano group, or a nitro group.
- N is an integer of 0 to 5 (when n is 2 or more, A may be the same or different from each other);
- Y is an alkyl group Het is a pyridyl group having a substituent or a thiazoyl group having a substituent.
- Examples of the base used in this reaction include inorganic bases such as sodium hydroxide, potassium hydroxide, sodium hydride, sodium carbonate, and potassium carbonate; triethylamine, 4- (dimethylamino) pyridine, pyridine, 1,8-diazabicyclo [5. 4.0] undecene-7, 1,5-diazabicyclo [4.3.0] nonene-5 and other organic bases; These bases can be used alone or in combination of two or more.
- the amount of the base used is usually 0.01 to 100 times mol, preferably 0.1 to 5 times mol, of the tetrazoylhydroxyimino derivative represented by the formula (V).
- This reaction can be performed in the presence or absence of a solvent.
- the solvent to be used is not particularly limited as long as it is an inert solvent for this reaction.
- hydrocarbon solvents such as pentane, hexane, heptane, benzene, toluene, xylene
- halogen solvents such as dichloromethane, chloroform, carbon tetrachloride
- nitrile solvents such as acetonitrile, propiononitrile
- diethyl ether dioxane, tetrahydrofuran, etc.
- Ether solvents such as N, N-dimethylformamide, N, N-dimethylacetamide, N-methylpyrrolidone; sulfoxide solvents such as dimethyl sulfoxide; water; and mixed solvents thereof; It is done.
- the temperature at which this reaction is carried out is usually ⁇ 70 ° C. to + 200 ° C., preferably ⁇ 20 ° C. to + 100 ° C. Although the reaction time depends on the reaction scale and the like, it is usually 30 minutes to 24 hours.
- the salt of the compound represented by the formula (1-a) can be produced by reacting an acid with the compound represented by the formula (1-a) according to a conventional method.
- the substituent in the pyridyl group having a substituent or the thiazoyl group having a substituent represented by Het can be replaced with a chemically acceptable group by a known chemical reaction.
- the tetrazoyl oxime derivative represented by the formula (1-a) has (E) and (Z) stereoisomers based on the carbon-nitrogen double bond of the oxime moiety.
- the synthesized product is obtained as a mixture of only the (Z) isomer or the (E) and (Z) isomers.
- Two isomers can be isolated by separating and purifying a mixture of the (E) isomer and the (Z) isomer by a known method such as silica gel column chromatography. Both the (Z) isomer and the (E) isomer have activity, and the (Z) isomer is preferred.
- the salt of the tetrazoyloxime derivative represented by the formula (1-a) is not particularly limited as long as it is an agriculturally and horticulturally acceptable salt.
- salts of inorganic acids such as hydrochloride, nitrate, sulfate, and phosphate
- salts of organic acids such as acetate, lactate, propionate, and benzoate.
- the intended compound represented by the formula (1-a) and a salt thereof can be isolated by carrying out a usual post-treatment operation.
- purification of the product is necessary, known and conventional purification means such as distillation, recrystallization or column chromatography can be employed.
- Tetrazoyloxime derivatives represented by the formula (1-a) or salts thereof are used in a wide variety of filamentous fungi such as Oomycetes, Ascomycetes. It has excellent bactericidal power against bacteria belonging to incomplete fungi (Deuteromycetes) and basidiomycetes. Therefore, a composition comprising a tetrazoyl oxime derivative represented by the formula (1-a) or a salt thereof as an active ingredient is used for controlling various diseases that occur during the cultivation of agricultural and horticultural crops including flowers, turf, and grass. It can be used by seed treatment, foliage application, soil application or water application.
- the tetrazoyl oxime derivative represented by the formula (1-a) or a salt thereof is a drug having an excellent bactericidal effect not only on pathogenic bacteria sensitive to these drugs but also on resistant bacteria.
- the tetrazoyl oxime derivative represented by the formula (1-a) or a salt thereof can also be used as an antifouling agent for preventing aquatic organisms from adhering to underwater contact objects such as ship bottoms and fish nets. Some intermediates produced in the process for producing the tetrazoyloxime derivative represented by the formula (1-a) or a salt thereof exhibit bactericidal activity. Furthermore, by using a tetrazoyl oxime derivative represented by the formula (1-a) or a salt thereof in a paint or fiber, it can be used as an antibacterial or antifungal agent for walls, bathtubs, shoes or clothes. You can also.
- the plant disease control agent containing a tetrazoyl oxime derivative represented by the formula (1-a) or a salt thereof as an active ingredient is a form comprising only the tetrazoyl oxime derivative represented by the formula (1-a) or a salt thereof. It may be in the form of a general agricultural chemical, that is, in the form of a wettable powder, granule, powder, emulsion, aqueous solvent, suspension, flowable and the like.
- the amount of the active ingredient in the preparation is not particularly limited, but is usually 0.5 to 95% by weight, preferably 2 to 70% by weight, based on the entire composition (preparation).
- a plant disease control agent comprising a tetrazoyloxime derivative represented by the formula (1-a) or a salt thereof as an active ingredient is sufficiently effective alone, but it is a fungicide, insecticide / acaricide or synergist. It can also be used by mixing with an agent.
- Example 1 Production of 5-benzoyl-1-methyltetrazole
- a reactor equipped with a stirrer, a reflux apparatus, and a dropping funnel was charged with 36.5 L of methanol and 12 kg (73 mol) of the compound represented by the formula (Oa), and methylamine 87 while adjusting the temperature to 15 to 20 ° C. .6 mol was added and reacted for 5 hours.
- 11.79 kg of the compound represented by the formula (Ia) was obtained.
- the yield was 95.4%.
- the compound represented by the formula (Ia) obtained above is added to 73 L of chloroform, 109.5 mol of thionyl chloride is added while adjusting the temperature to 15 to 20 ° C., and reacted for 1 hour, and then the solvent reflux temperature For 6.5 hours. By this reaction, 23 kg (including a solvent) of the compound represented by the formula (IIa) was obtained.
- a tetrazoyl oxime derivative having an excellent plant disease control effect can be produced by using a ketoamide derivative that is relatively easy to produce and obtain as a starting material, which is industrially useful.
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Abstract
Description
本願は、2009年3月11日に、日本に出願された特願2009-057874号に基づき優先権を主張し、その内容をここに援用する。
式(I)で表されるケトアミド誘導体をハロゲン化剤と反応させて、式(II)で表されるイミドイルハライド誘導体を得る工程1と、
式(II)で表されるイミドイルハライド誘導体を式(III)で表されるアジ化物と反応させて、式(IV)で表される1-アルキル-5-ベンゾイル-1H-テトラゾール誘導体を得る工程2とを含む、1-アルキル-5-ベンゾイル-1H-テトラゾール誘導体の製造方法である。
工程1において、前記ハロゲン化剤は、ホスゲン、塩化オキザリル、塩化チオニルおよびオキシ塩化リンからなる群より選択される少なくとも1種であることが好ましい。
工程2において、前記式(III)で表されるアジ化物は、アジ化ナトリウムであることが好ましい。
工程1において、溶媒として、クロロホルム、塩化メチレンまたはベンゼンを用いることが好ましい。
また、本発明は、前記方法で得られる前記式(IV)で表される1―アルキル―5―ベンゾイル―1H―テトラゾール誘導体に、ヒドロキシルアミンまたはその塩を作用させて、式(V)
式(IV)で表される1-アルキル-5-ベンゾイル-1H-テトラゾール誘導体および式(V)で表されるテトラゾイルヒドロキシルイミノ誘導体は、植物病害防除剤などを製造するための中間体として有用である。
例えば、式(IV)で表される1-アルキル-5-ベンゾイル-1H-テトラゾール誘導体にヒドロキシルアミンを反応させて式(V)で表されるテトラゾイルヒドロキシイミノ誘導体を得、次いで、これに、塩基の存在下で、Het-CH2L (但し、Lは塩素原子、臭素原子またはヨウ素原子である。)を反応させることによって優れた植物病害防除効を有する前記式(1-a)で表されるテトラゾイルオキシム誘導体を製造できる。
式(I)で表されるケトアミド誘導体をハロゲン化剤と反応させて、式(II)で表されるイミドイルハライド誘導体を得る工程1と、
式(II)で表されるイミドイルハライド誘導体を式(III)で表されるアジ化物と反応させて、式(IV)で表され1-アルキル-5-ベンゾイル-1H-テトラゾール誘導体を得る工程2とを含むものである。
式(I)で表されるケトアミド誘導体は、式(O)で表されるα-オキソカルボン酸エステル(式(O)中のRはアルキル基などを表す。)等をYNH2でアミド化することによって得ることができる。また、特表2002-532466号公報記載のα-ケトアミド誘導体を調製する方法を参考にすることによっても得ることができる。
なお、式(O)で表されるα-オキソカルボン酸エステルは、対応する構造のα-オキソカルボン酸およびその塩やα-ヒドロキシカルボン酸およびその塩等から容易に製造できる。
ハロゲン原子としては、フッ素原子、塩素原子、臭素原子、およびヨウ素原子が挙げられる。
アルキル基としては、メチル基、エチル基、n-プロピル基、i-プロピル基、n-ブチル基、i-ブチル基、s-ブチル基、t-ブチル基、n-ペンチル基、n-ヘキシル基等が挙げられる。アルキル基を構成する炭素の数は1~8が好ましい。
ハロアルキル基としては、フルオロメチル基、クロロメチル基、ブロモメチル基、ジフルオロメチル基、ジクロロメチル基、トリフルオロメチル基、トリクロロメチル基、トリフルオロエチル基、ペンタフルオロエチル基、3,3,3,2,2-ペンタフルオロプロピル基、2,2,2-トリフルオロ-1-トリフルオロメチルエチル基等が挙げられる。
ハロアルキル基を構成する炭素の数は1~8が好ましい。
ハロアルコキシ基としては、2-クロロ-n-プロポキシ基、2,3-ジクロロブトキシ基、トリフルオロメトキシ基等が挙げられる。ハロアルコキシ基を構成する炭素の数は1~8が好ましい。
アルキルスルホニル基としては、メチルスルホニル基、エチルスルホニル基、n-プロピルスルホニル基、i-プロピルスルホニル基、t-ブチルスルホニル基等が挙げられる。アルキルスルホニル基を構成する炭素の数は1~8が好ましい。
無置換のアリール基として具体的には、フェニル基、1-ナフチル基、2-ナフチル基、アズレニル基、インダニル基、テトラリニル基等が挙げられる。
(1)フッ素原子、塩素原子、臭素原子、ヨウ素原子等のハロゲン原子; (2)メチル基、エチル基、n-プロピル基、i-プロピル基、n-ブチル基、s-ブチル基、i-ブチル基、t-ブチル基、n-ペンチル基、n-ヘキシル基等のアルキル基; (3)シクロプロピル基、シクロブチル基、シクロペンチル基、シクロヘキシル基、シクロヘプチル基等のシクロアルキル基; (4)メトキシ基、エトキシ基、n-プロポキシ基、i-プロポキシ基、n-ブトキシ基、i-ブトキシ基、s-ブトキシ基、t-ブトキシ基等のアルコキシ基; (5)ビニル基、1-プロペニル基、2-プロペニル基、1-ブテニル基、2-ブテニル基、3-ブテニル基、1-メチル-2-プロペニル基、2-メチル-2-プロペニル基、1-ペンテニル基、2-ペンテニル基、3-ペンテニル基、4-ペンテニル基、1-メチル-2-ブテニル基、2-メチル-2-ブテニル基、1-ヘキセニル基、2-ヘキセニル基、3-ヘキセニル基、4-ヘキセニル基、5-ヘキセニル基等のアルケニル基;
これら(1)~(85)に例示された置換基は、その中にさらに(1)~(85)に例示された置換基を化学的に許容される範囲で有することができる。
これらの中でも、Aはハロゲン原子であるのが好ましい。
ハロゲン化剤の使用量は、式(I)で表されるケトアミド誘導体1モルに対して、通常1.0~3.0モル、好ましくは1.5~2.5モルである。ハロゲン化剤を過剰に用いることによって溶媒を不要にすることができる。
溶媒の使用量は、式(I)で表されるケトアミド誘導体1質量部に対して、通常0.001~100質量部である。
次に、式(II)で表されるイミドイルハライド誘導体を式(III)で表されるアジ化物と反応させる。
式(III)で表されるアジ化物としては、ナトリウム、カリウム等のアルカリ金属のアジ化物、または、カルシウム、マグネシウム等のアルカリ土類金属のアジ化物が挙げられる。これらのうち、アルカリ金属のアジ化物が好ましく、アジ化ナトリウムがより好ましい。
式(III)で表されるアジ化物の使用量は、式(II)で表されるイミドイルハライド誘導体1モルに対して、1.0~4.0モルが好ましく、1.1~3.0モルがより好ましい。
極性溶媒としては、N,N-ジメチルホルムアミド、N,N-ジメチルアセトアミド、N-メチルホルムアニリド、アセトニトリル、テトラヒドロフランなどが挙げられる。これらの中、N,N-ジメチルホルムアミド、アセトニトリル、テトラヒドロフランが好ましい。
芳香族炭化水素溶媒としては、ベンゼン、トルエン、キシレン、メシチレン、エチルベンゼン、クロロベンゼン、ニトロベンゼン、クメン、クロロトルエンなどが挙げられ、これらの中で特にトルエン、キシレンが好ましい。
溶媒の使用量は、式(II)で表されるイミドイルハライド誘導体1gに対して、1~15mlが好ましく、3~10mlがより好ましい。
さらに、式(IV)で表される1―アルキル―5―ベンゾイル―1H―テトラゾール誘導体をヒドロキシルアミンまたはその塩と反応させることによって、式(V)で表されるテトラゾイルヒドロキシルイミノ誘導体が容易に得られる。
例えば、式(IV)で表される1-アルキル-5-ベンゾイル-1H-テトラゾール誘導体および式(V)で表されるテトラゾイルヒドロキシルイミノ誘導体から、式(1-a)で表されるテトラゾイルオキシム誘導体を製造することができる。
既に述べたように、本発明の製造方法で得られる式(IV)で表される1-アルキル-5-ベンゾイル-1H-テトラゾール誘導体にヒドロキシルアミンを反応させて式(V)で表されるテトラゾイルヒドロキシイミノ誘導体を得、次いで、これに、塩基の存在下で、Het-CH2L (但し、Lは塩素原子、臭素原子またはヨウ素原子である。)を反応させることによって、式(1-a)で表されるテトラゾイルオキシム誘導体を製造することができる。なお、式(1-a)中、Aは、ハロゲン原子、アルキル基、ハロアルキル基、アルコキシ基、ハロアルコキシ基、アルキルスルホニル基、または無置換の若しくは置換基を有するアリール基、シアノ基又はニトロ基であり;nは、0~5のいずれかの整数(nが2以上のとき、A同士は互いに同一であっても、相異なっていてもよい。)であり;Yは、アルキル基であり;Hetは置換基を有するピリジル基または置換基を有するチアゾイル基である。
塩基の使用量は、式(V)で表されるテトラゾイルヒドロキシイミノ誘導体に対し、通常0.01~100倍モル、好ましくは0.1~5倍モルである。
用いる溶媒としては、本反応に不活性な溶媒であれば特に限定されない。例えば、ペンタン、ヘキサン、ヘプタン、ベンゼン、トルエン、キシレン等の炭化水素系溶媒;ジクロロメタン、クロロホルム、四塩化炭素等のハロゲン系溶媒;アセトニトリル、プロピオンニトリル等のニトリル系溶媒;ジエチルエーテル、ジオキサン、テトラヒドロフラン等のエーテル系溶媒;N,N-ジメチルホルムアミド、N,N-ジメチルアセタミド、N-メチルピロリドン等のアミド系溶媒;ジメチルスルホキシド等のスルホキシド系溶媒;水;およびこれらの混合溶媒;等が挙げられる。
式(1-a)で表されるテトラゾイルオキシム誘導体またはその塩は、広範囲の種類の糸状菌、例えば、卵菌類(Oomycetes)、子のう(嚢)菌類(Ascomycetes)、不完全菌類(Deuteromycetes)、担子菌類(Basidiomycetes)に属する菌に対し優れた殺菌力を有する。
従って、式(1-a)で表されるテトラゾイルオキシム誘導体またはその塩を有効成分とする組成物は、花卉、芝、牧草を含む農園芸作物の栽培に際し発生する種々の病害の防除に、種子処理、茎葉散布、土壌施用または水面施用等により使用することができる。
また式(1-a)で表されるテトラゾイルオキシム誘導体またはその塩の製造工程において製造される中間体の中には殺菌活性を示すものがある。
さらにまた、式(1-a)で表されるテトラゾイルオキシム誘導体またはその塩を塗料や繊維等に混入させることで、壁や浴槽、若しくは靴や衣服の防菌、防黴剤として使用することもできる。
製剤中の有効成分量は、特に限定されないが、通常、組成物(製剤)全体に対して0.5~95質量%であり、好ましくは2~70質量%である。
攪拌機、還流装置、および滴下漏斗を備えた反応器に、メタノール36.5Lおよび式(Oa)で表される化合物12kg(73モル)を仕込み、温度を15~20℃に調整しながらメチルアミン87.6モルを添加して5時間反応させた。この反応によって式(Ia)で表される化合物11.79kgを得た。収率は95.4%であった。
Claims (5)
- 式(I)
(式(I)中、Aは、ハロゲン原子、アルキル基、ハロアルキル基、アルコキシ基、ハロアルコキシ基、アルキルスルホニル基、または無置換の若しくは置換基を有するアリール基、シアノ基又はニトロ基を表す。nは、0~5のいずれかの整数を表す(nが2以上のとき、A同士は互いに同一であっても、相異なっていてもよい。)。Yは、アルキル基を表す。)で表されるケトアミド誘導体を、ハロゲン化剤と反応させて、
式(II)
(式(II)中、A、n及びYは上記と同様の意味を表す。Xはハロゲン原子を表す。)で表されるイミドイルハライド誘導体を得る工程1と、
前記式(II)で表されるイミドイルハライド誘導体を、式(III)
(式(III)中、Mはアルカリ金属またはアルカリ土類金属を表す。mは1又は2を表す。)で表されるアジ化物と反応させて、
式(IV)
(式(IV)中、A、n及びYは上記と同様の意味を表す。)で表される1-アルキル-5-ベンゾイル-1H-テトラゾール誘導体を得る工程2とを含む、
1-アルキル-5-ベンゾイル-1H-テトラゾール誘導体の製造方法。 - 前記工程1において、前記ハロゲン化剤が、ホスゲン、塩化オキザリル、塩化チオニルおよびオキシ塩化リンからなる群より選択される少なくとも1種であることを特徴とする請求項1に記載の1-アルキル-5-ベンゾイル-1H-テトラゾール誘導体の製造方法。
- 前記工程2において、前記式(III)で表されるアジ化物が、アジ化ナトリウムであることを特徴とする請求項1に記載の1-アルキル-5-ベンゾイル-1H-テトラゾール誘導体の製造方法。
- 前記工程1において、溶媒として、クロロホルム、塩化メチレンまたはベンゼンを用いることを特徴とする請求項1に記載の1―アルキル―5―ベンゾイル―1H―テトラゾール誘導体の製造方法。
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Also Published As
Publication number | Publication date |
---|---|
EP2407461A4 (en) | 2012-08-08 |
CN102341378A (zh) | 2012-02-01 |
KR20110108419A (ko) | 2011-10-05 |
EP2407461B1 (en) | 2016-05-18 |
KR101350123B1 (ko) | 2014-01-09 |
JPWO2010103783A1 (ja) | 2012-09-13 |
US20120004420A1 (en) | 2012-01-05 |
CN102341378B (zh) | 2015-09-09 |
JP5319755B2 (ja) | 2013-10-16 |
EP2407461A1 (en) | 2012-01-18 |
US8273781B2 (en) | 2012-09-25 |
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