WO2020246418A1 - ベンズアミド化合物および除草剤 - Google Patents
ベンズアミド化合物および除草剤 Download PDFInfo
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- WO2020246418A1 WO2020246418A1 PCT/JP2020/021572 JP2020021572W WO2020246418A1 WO 2020246418 A1 WO2020246418 A1 WO 2020246418A1 JP 2020021572 W JP2020021572 W JP 2020021572W WO 2020246418 A1 WO2020246418 A1 WO 2020246418A1
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- 0 *c(cc1)c(*CCC2)c2c1C(N(*)c1nnn[n]1*)=O Chemical compound *c(cc1)c(*CCC2)c2c1C(N(*)c1nnn[n]1*)=O 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
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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
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
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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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- 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
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/82—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with three ring hetero atoms
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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
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/40—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having a double or triple bond to nitrogen, e.g. cyanates, cyanamides
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P13/00—Herbicides; Algicides
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P13/00—Herbicides; Algicides
- A01P13/02—Herbicides; Algicides selective
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
- C07D413/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
Definitions
- the present invention relates to a novel benzamide compound and a herbicide containing the novel benzamide compound as an active ingredient.
- the present application claims priority to Japanese Patent Application No. 2019-104650 filed on June 4, 2019, the contents of which are incorporated herein by reference.
- Patent Document 1 discloses a bicyclic benzamide compound (BICYCLIC BENZAMIDE) represented by the formula (A).
- Herbicides are required not only to have an excellent weed control effect, but also to have less phytotoxicity on crops, to be less likely to remain in the environment, and to not pollute the environment.
- An object of the present invention is to provide a novel benzamide compound and a herbicide which are useful as active ingredients of a herbicide, which have a reliable weed control effect even at a low dose, have less phytotoxicity to crops, and are highly environmentally safe. That is.
- Het represents a substituted or unsubstituted 5-membered heteroaryl group.
- R 1 is a substituted or unsubstituted C1 to 6 alkyl group, a substituted or unsubstituted C1 to 6 alkoxy group, a substituted or unsubstituted C1 to 6 alkylthio group, a substituted or unsubstituted C6 to 10 aryl group, a substituted or unsubstituted. It shows an unsubstituted 5- to 6-membered heteroaryl group or a halogeno group.
- R 2 is a hydrogen atom, a substituted or unsubstituted C1 to 6 alkyl group, a substituted or unsubstituted C1 to 6 alkylcarbonyl group, a substituted or unsubstituted C1 to 6 alkoxycarbonyl group, or a substituted or unsubstituted C6 to It shows a 10 arylcarbonyl group.
- X 1 represents an oxygen atom or a sulfonyl group.
- R independently represents a hydrogen atom, a C1 to 6 alkyl group, a substituted or unsubstituted C1 to 6 alkylcarbonyl group, a substituted or unsubstituted C6 to 10 aryl group, or a cyano group.
- m represents 0 or 1
- n represents 0 or 1
- the sum of m and n is 1 or 2.
- A represents a substituted or unsubstituted C2 to 4 alkylene group, a substituted or unsubstituted C2 to 3 alkenylene group, or a substituted or unsubstituted C1 to 2 alkyleneoxy C1 to C2 alkylene group.
- R 3 represents a hydrogen atom, a substituted or unsubstituted C1-6 alkyl group, or a halogeno group.
- R 4 represents a hydrogen atom, a substituted or unsubstituted C1-6 alkyl group, or a halogeno group.
- Z represents an oxygen atom or a sulfur atom.
- the benzamide compound of the present invention is useful as an active ingredient of a herbicide because it has a reliable weed control effect even at a low dose, has little phytotoxicity to crops, and is highly safe for the environment.
- the herbicide of the present invention can be safely used for controlling weeds in the cultivation of agricultural and horticultural crops.
- the benzamide compound of the present invention is a compound represented by the formula (II) (sometimes referred to as compound (II)) and a salt of compound (II).
- the benzamide compound of the present invention also includes hydrates, various solvates, polymorphs of crystals and the like.
- the benzamide compound of the present invention may have a stereoisomer based on an asymmetric carbon, a double bond, or a tautomer. All such isomers and mixtures thereof are within the technical scope of the invention.
- the term "unsubstituted” means that it is only a parent group. When there is no description of "substitution” and only the name of the parent group is described, it means “unsubstituted” unless otherwise specified.
- substituted means that any hydrogen atom of the parent group is substituted with a group (substituent) having the same or different structure as the mother nucleus. Therefore, a “substituent” is another group attached to a parent group.
- the number of substituents may be one, or two or more. The two or more substituents may be the same or different. Terms such as “C1 to 6" indicate that the number of carbon atoms of the parent group is 1 to 6 or the like. This number of carbon atoms does not include the number of carbon atoms in the substituent. For example, a butyl group having an ethoxy group as a substituent is classified as a C2 alkoxy C4 alkyl group.
- the "substituent” is chemically acceptable and is not particularly limited as long as it has the effect of the present invention.
- the groups that can be “substituents” are illustrated below. C1-6 such as methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, s-butyl group, i-butyl group, t-butyl group, n-pentyl group, n-hexyl group, etc.
- Alkyl group Vinyl group, 1-propenyl group, 2-propenyl group (allyl group), 1-butenyl group, 2-butenyl group, 3-butenyl group, 1-methyl-2-propenyl group, 2-methyl-2-propenyl group, etc.
- C2-6 alkenyl groups C2-6 alkynyl groups such as ethynyl group, 1-propynyl group, 2-propynyl group, 1-butynyl group, 2-butynyl group, 3-butynyl group, 1-methyl-2-propynyl group;
- C3-8 cycloalkyl groups such as cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, cubicyl group; C6-10 aryl groups such as phenyl group and naphthyl group; C6-10aryl C1-6 alkyl groups such as benzyl group, phenethyl group; Heterocyclyl group with 3-6 membered ring; Heterocyclyl C1-6 alkyl group with 3- to 6-membered ring;
- C1-6 alkoxy groups such as methoxy group, ethoxy group, n-propoxy group, i-propoxy group, n-butoxy group, s-butoxy group, i-butoxy group, t-butoxy group; C2-6 alkenyloxy groups such as vinyloxy group, allyloxy group, propenyloxy group, butenyloxy group; C2-6 alkynyloxy groups such as ethynyloxy group and propargyloxy group; C6-10 aryloxy groups such as phenoxy group and naphthoxy group; C6-10aryl C1-6 alkoxy groups such as benzyloxy group, phenethyloxy group; 5- to 6-membered heteroaryloxy groups such as thiazolyloxy groups and pyridyloxy groups; Heteroaryl C1-6 alkyloxy group with 5-6 membered ring such as thiazolylmethyloxy group, pyridylmethyloxy group;
- Formylation group C1-6 alkylcarbonyl groups such as acetyl group, propionyl group; Formyloxy group; C1-6 alkylcarbonyloxy groups such as acetyloxy group, propionyloxy group; C6-10 arylcarbonyl groups such as benzoyl groups; C1-6 alkoxycarbonyl groups such as methoxycarbonyl group, ethoxycarbonyl group, n-propoxycarbonyl group, i-propoxycarbonyl group, n-butoxycarbonyl group, t-butoxycarbonyl group; C1-6 alkoxycarbonyloxy groups such as methoxycarbonyloxy group, ethoxycarbonyloxy group, n-propoxycarbonyloxy group, i-propoxycarbonyloxy group, n-butoxycarbonyloxy group, t-butoxycarbonyloxy group; Carboxylic group;
- Halogeno groups such as fluoro group, chloro group, bromo group, iod group; C1-6 haloalkyl groups such as chloromethyl group, chloroethyl group, trifluoromethyl group, 1,2-dichloro-n-propyl group, 1-fluoro-n-butyl group; C2-6 haloalkenyl groups such as 2-chloro-1-propenyl group, 2-fluoro-1-butenyl group; C2-6 haloalkynyl groups such as 4,4-dichloro-1-butynyl group, 4-fluoro-1-pentynyl group, 5-bromo-2-pentynyl group; C1-6 haloalkoxy groups such as trifluoromethoxy group, 2-chloro-n-propoxy group, 2,3-dichlorobutoxy group; C2-6 haloalkenyloxy groups such as 2-chloropropenyloxy group, 3-bromobutenyloxy group
- Amino group C1-6 alkyl-substituted amino groups such as methylamino group, dimethylamino group, diethylamino group; C6-10 arylamino groups such as anilino group and naphthylamino group; C6-10aryl C1-6 alkylamino groups such as benzylamino group, phenethylamino group; Formylamino group; C1-6 alkylcarbonylamino groups such as acetylamino group, propanoylamino group, butyrylamino group, i-propylcarbonylamino group; C1-6 alkoxycarbonylamino groups such as methoxycarbonylamino group, ethoxycarbonylamino group, n-propoxycarbonylamino group, i-propoxycarbonylamino group; Aminocarbonyl group having an unsubstituted or substituent such as a carbamoyl group, a dimethylaminocarbon
- C1-6 alkylthio groups such as methylthio group, ethylthio group, n-propylthio group, i-propylthio group, n-butylthio group, i-butylthio group, s-butylthio group, t-butylthio group; C1-6 haloalkylthio groups such as trifluoromethylthio group, 2,2,2-trifluoroethylthio group; C6-10 arylthio groups such as phenylthio groups and naphthylthio groups; 5- to 6-membered heteroarylthio groups such as thiazolylthio groups and pyridylthio groups;
- C1-6 alkylsulfinyl groups such as methylsulfinyl group, ethylsulfinyl group, t-butylsulfinyl group; C1-6 haloalkylsulfinyl groups such as trifluoromethylsulfinyl groups, 2,2,2-trifluoroethylsulfinyl groups; C6-10 arylsulfinyl groups such as phenylsulfinyl groups; A 5- to 6-membered heteroarylsulfinyl group such as a thiazolyl sulfinyl group or a pyridylsulfinyl group; C1-6 alkylsulfonyl groups such as methylsulfonyl groups, ethylsulfonyl groups, t-butylsulfonyl groups; C1-6 haloalkylsulfonyl groups such as trifluoromethylsulf
- Tri-C1-6 alkyl-substituted silyl groups such as trimethylsilyl group, triethylsilyl group, t-butyldimethylsilyl group; Tri-C6-10 aryl substituted silyl groups such as triphenylsilyl groups; Pentafluorosulfanil group; Cyano group; Nitro group;
- any hydrogen atom in the substituent may be substituted with a group having a different structure.
- the "substituent” in this case include a C1 to 6 alkyl group, a C1 to 6 haloalkyl group, a C1 to 6 alkoxy group, a C1 to 6 haloalkoxy group, a halogeno group, a cyano group, and a nitro group.
- heterocyclyl group having a 3- to 6-membered ring includes 1 to 4 heteroatoms selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom as constituent atoms of the ring.
- the heterocyclyl group may be monocyclic or polycyclic.
- the polycyclic heterocyclyl group may have any of a saturated alicyclic ring, an unsaturated alicyclic ring, and an aromatic ring as long as at least one ring is a heterocyclic ring.
- Examples of the "3- to 6-membered heterocyclyl group” include a 3- to 6-membered saturated heterocyclyl group, a 5- to 6-membered heteroaryl group, and a 5- to 6-membered partially unsaturated heterocyclyl group. ..
- Examples of the saturated heterocyclyl group having a 3- to 6-membered ring include an aziridinyl group, an epoxy group, a pyrrolidinyl group, a tetrahydrofuranyl group, a thiazolidinyl group, a piperidyl group, a piperazinyl group, a morpholinyl group, a dioxolanyl group, and a dioxanyl group.
- Examples of the 5-membered heteroaryl group include a pyrrolyl group, a frill group, a thienyl group, an imidazolyl group, a pyrazolyl group, an oxazolyl group, an isooxazolyl group, a thiazolyl group, an isothiazolyl group, a triazolyl group, an oxadiazolyl group, a thiadiazolyl group and a tetrazolyl group.
- Examples of the 6-membered heteroaryl group include a pyridyl group, a pyrazinyl group, a pyrimidinyl group, a pyridadinyl group, and a triazinyl group.
- Het represents a substituted or unsubstituted 5-membered heteroaryl group.
- the 5-membered heteroaryl group include a pyrrolyl group, a frill group, a thienyl group, an imidazolyl group, a pyrazolyl group, an oxazolyl group, an isooxazolyl group, a thiazolyl group, an isothiazolyl group and a triazolyl group (specifically, [1,2,3]].
- a triazolyl group such as 1H-1,2,4-triazole-5-yl group, 4H-1,2,4-triazole-3-yl group; 1,3,4-oxadiazole-2-yl Oxadiazole groups such as groups; tetrazolyl groups such as tetrazole-5-yl groups and the like can be mentioned.
- a halogeno group such as a fluoro group, a chloro group, a bromo group and an iodo group
- a methyl group, an ethyl group, an n-propyl group, an i-propyl group and an n- C1-6 alkyl groups such as butyl group, s-butyl group, i-butyl group, t-butyl group, n-pentyl group, n-hexyl group
- chloromethyl group, chloroethyl group, trifluoromethyl group, 1, 2 C1 to 6 haloalkyl groups such as -dichloro-n-propyl group and 1-fluoro-n-butyl group are preferable.
- R 1 is a substituted or unsubstituted C1 to 6 alkyl group, a substituted or unsubstituted C1 to 6 alkoxy group, a substituted or unsubstituted C1 to 6 alkylthio group, a substituted or unsubstituted C6 to 10 aryl group, a substituted or unsubstituted. It shows an unsubstituted 5- to 6-membered heteroaryl group or a halogeno group.
- the "C1 to 6 alkyl group” may be a straight chain or a branched chain.
- Examples of the “C1 to 6 alkyl group” include methyl group, ethyl group, n-propyl group, n-butyl group, n-pentyl group, n-hexyl group, i-propyl group, i-butyl group and s-butyl group. , T-butyl group, i-pentyl group, neopentyl group, 2-methylbutyl group, i-hexyl group and the like.
- C1-6 alkoxy group examples include a methoxy group, an ethoxy group, an n-propoxy group, an n-butoxy group, an n-pentyloxy group, an n-hexyloxy group, an i-propoxy group, an i-butoxy group and s-. Butoxy group, t-butoxy group, i-hexyloxy group and the like can be mentioned.
- C1-6 alkylthio group examples include a methylthio group, an ethylthio group, an n-propylthio group, a t-butylthio group, a 1-ethylpropylthio group, an n-hexylthio group, an i-hexylthio group and the like.
- C6 to 10 aryl group examples include a phenyl group and a naphthyl group.
- the "5- to 6-membered ring heteroaryl group” contains 1, 2, 3 or 4 heteroatoms selected from the group consisting of nitrogen atoms, oxygen atoms and sulfur atoms as ring constituent atoms.
- the 5-membered heteroaryl group examples include a pyrrolyl group, a furyl group, a thienyl group, an imidazolyl group, a pyrazolyl group, an oxazolyl group, an isooxazolyl group, a thiazolyl group, an isothiazolyl group, a triazolyl group, an oxadiazolyl group, a thiadiazolyl group and a tetrazolyl group.
- 6-membered ring heteroaryl group examples include a pyridyl group, a pyrazinyl group, a pyrimidinyl group, a pyridadinyl group, a triazinyl group and the like.
- halogeno group examples include a fluoro group, a chloro group, a bromo group, an iod group and the like.
- Substituents on the "C1-6 alkyl group” or “C1-6 alkoxy group” include halogeno groups such as fluoro group, chloro group, bromo group, iodo group; hydroxyl group; methoxy group, ethoxy group, n-propoxy group.
- C1-6 alkoxy groups such as i-propoxy group, n-butoxy group, s-butoxy group, i-butoxy group, t-butoxy group; 2-chloro-n-propoxy group, 2,3-dichlorobutoxy group, C1-6 haloalkoxy groups such as trifluoromethoxy group; C6-10 aryl groups such as phenyl group, naphthyl group; halogeno such as 4-chlorophenyl group, 4-trifluoromethylphenyl group, 4-trifluoromethoxyphenyl group Examples include C6-10 aryl groups substituted with groups, C1-6 haloalkyl groups, or C1-6 haloalkoxy groups; cyano groups.
- a halogeno group such as a fluoro group, a chloro group, a bromo group and an iodo group
- a methyl group, an ethyl group and an n- C1-6 alkyl groups such as propyl group, i-propyl group, n-butyl group, s-butyl group, i-butyl group, t-butyl group, n-pentyl group, n-hexyl group
- chloromethyl group, chloroethyl C1-6 haloalkyl groups such as groups, trifluoromethyl groups, 1,2-dichloro-n-propyl groups, 1-fluoro-n-butyl groups
- R 1 is preferably a C1 to 6 haloalkyl group such as a trifluoromethyl group.
- R 2 is a hydrogen atom, a substituted or unsubstituted C1 to 6 alkyl group, a substituted or unsubstituted C1 to 6 alkylcarbonyl group, a substituted or unsubstituted C1 to 6 alkoxycarbonyl group, or a substituted or unsubstituted C6 to It shows a 10 arylcarbonyl group.
- C1 ⁇ 6 alkyl group may include the same as those exemplified in R 1.
- Substituents on the "C1-6 alkyl group” include halogeno groups such as fluoro group, chloro group, bromo group and iodo group; hydroxyl group; methoxy group, ethoxy group, n-propoxy group, i-propoxy group, n- C1-6 alkoxy groups such as butoxy group, s-butoxy group, i-butoxy group, t-butoxy group; C1 ⁇ such as 2-chloro-n-propoxy group, 2,3-dichlorobutoxy group, trifluoromethoxy group 6 Haloalkoxy groups; C6-10aryl groups such as phenyl groups and naphthyl groups; halogeno groups such as 4-chlorophenyl groups, 4-trifluoromethylphenyl groups and 4-trifluoromethoxyphenyl groups, C1-6 haloalkyl groups, Alternatively
- Examples of the "C1 to 6 alkylcarbonyl group” include an acetyl group, a propionyl group, a butyryl group, a pentanoyl group, a hexanoyl group and the like.
- Examples of the "C1 to 6 alkoxycarbonyl group” include a methoxycarbonyl group, an ethoxycarbonyl group, an n-propoxycarbonyl group, an i-propoxycarbonyl group, an n-butoxycarbonyl group, an i-butoxycarbonyl group, an s-butoxycarbonyl group, and t.
- C6 to 10 arylcarbonyl group examples include a benzoyl group and a naphthylcarbonyl group.
- a halogeno group such as a fluoro group, a chloro group, a bromo group, an iodo group; a hydroxyl group; a methoxy group, an ethoxy group, an n- C1-6 alkoxy groups such as propoxy group, i-propoxy group, n-butoxy group, s-butoxy group, i-butoxy group, t-butoxy group; 2-chloro-n-propoxy group, 2,3-dichlorobutoxy C1-6 haloalkoxy groups such as groups and trifluoromethoxy groups; C6-10 aryl groups such as phenyl groups and naphthyl groups; 4-chlorophenyl groups, 4-trifluoromethylphenyl groups, 4-trifluoromethoxyphenyl groups and the like , C6-10 aryl groups substituted with halogeno groups, C1-6
- a halogeno group such as a fluoro group, a chloro group, a bromo group and an iodo group; a methyl group, an ethyl group, an n-propyl group, an i-propyl group and an n-butyl group.
- C1-6 alkyl groups such as groups, s-butyl groups, i-butyl groups, t-butyl groups, n-pentyl groups, n-hexyl groups; chloromethyl group, chloroethyl group, trifluoromethyl group, 1,2- C1-6 haloalkyl groups such as dichloro-n-propyl group, 1-fluoro-n-butyl group; hydroxyl group; methoxy group, ethoxy group, n-propoxy group, i-propoxy group, n-butoxy group, s-butoxy group , C1-6 alkoxy groups such as i-butoxy group, t-butoxy group; C1-6 haloalkoxy groups such as 2-chloro-n-propoxy group, 2,3-dichlorobutoxy group, trifluoromethoxy group; cyano group Can be mentioned.
- X 1 represents an oxygen atom or a sulfonyl group.
- R independently represents a hydrogen atom, a C1 to 6 alkyl group, a substituted or unsubstituted C1 to 6 alkylcarbonyl group, a substituted or unsubstituted C6 to 10 aryl group, or a cyano group.
- m represents 0 or 1
- n represents 0 or 1
- n represents 1 or 2.
- C1 ⁇ 6 alkyl group in R may include the same as those exemplified in R 1.
- substituent on the "C1 ⁇ 6 alkyl-carbonyl group” and “C1 ⁇ 6 alkyl group” for R may include the same as those exemplified in R 2.
- Specific examples of the "C6 to 10 aryl group” in R and the substituent on the "C6 to 10 aryl group” include the same examples as those exemplified in R 1 .
- n 1
- X 2 is preferably a sulfonyl group.
- A represents a substituted or unsubstituted C2 to 4 alkylene group, a substituted or unsubstituted C2 to 3 alkenylene group, or a substituted or unsubstituted C1 to 2 alkyleneoxy C1 to C2 alkylene group.
- Examples of the "C2-4 alkylene group” include a dimethylene group, a trimethylene group, and a tetramethylene group.
- C1 ⁇ 2 alkyleneoxy C1 ⁇ C2 alkylene group a methyleneoxy methylene (-CH 2 -O-CH 2 - ), methyleneoxy dimethylene group (-CH 2 -O-CH 2 CH 2 -), Examples thereof include a dimethyleneoxymethylene group (-CH 2 CH 2- O-CH 2- ) and a dimethyleneoxydimethylene group (-CH 2 CH 2- O-CH 2 CH 2- ).
- the substituent on the "C2-4 alkylene group", “C2-3 alkenylene group”, or “C1-2 alkyleneoxy C1-2 alkylene group” is a halogeno such as a fluoro group, a chloro group, a bromo group, or an iodo group.
- C1-6 alkyl groups such as methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, s-butyl group, i-butyl group, t-butyl group; chloromethyl group, chloroethyl C1-6 haloalkyl groups such as groups, trifluoromethyl groups, 1,2-dichloro-n-propyl groups, 1-fluoro-n-butyl groups; hydroxyl groups; methoxy groups, ethoxy groups, n-propoxy groups, i-propoxy C1-6 alkoxy groups such as groups, n-butoxy groups, s-butoxy groups, i-butoxy groups, t-butoxy groups; 2-chloro-n-propoxy group, 2,3-dichlorobutoxy group, trifluoromethoxy group C1-6 haloalkoxy groups such as C1-6 haloalkoxy groups; C1-6 alkoxy C1-6 alkyl groups such as
- R 3 represents a hydrogen atom, a substituted or unsubstituted C1-6 alkyl group, or a halogeno group.
- R 4 represents a hydrogen atom, a substituted or unsubstituted C1-6 alkyl group, or a halogeno group.
- Z represents an oxygen atom or a sulfur atom.
- R 3 and R 4 include the same as those exemplified in R 1 .
- substituent on the "C1 ⁇ 6 alkyl group” may include the same as those exemplified in R 1.
- R 3 is a hydrogen atom and R 4 is a hydrogen atom.
- Z is preferably an oxygen atom.
- the preferred compound form of the present invention can be represented by the following formula (I).
- a particularly preferable form of the compound of the present invention can be represented by the following formula (III).
- R 1 , R 2 , and X 2 have similar meanings to those in formula (II).
- R 5 represents a substituted or unsubstituted C1-6 alkyl group or a substituted or unsubstituted C3-6 cycloalkyl group.
- Specific examples of the "C1 to 6 alkyl groups" in R 5 include the same as those exemplified in R 1 .
- Specific examples of the "C3 ⁇ 6 cycloalkyl group” in R 5 may include cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group.
- substituents on the "C1 to 6 alkyl groups” and “C3 to 6 cycloalkyl groups” are the same as those exemplified as the substituents of the "C1 to 6 alkyl groups” in R 1 , and cyclo. Examples thereof include C3 to 6 cycloalkyl groups such as a propyl group.
- salt of compound (II) examples include alkali metal salts such as lithium, sodium and potassium; alkaline earth metal salts such as calcium and magnesium; transition metal salts such as iron and copper; ammonium salts; triethylamine and tributylamine. , Salts of organic bases such as pyridine and hydrazine.
- the structure of the benzamide compound of the present invention can be determined by an NMR spectrum, an IR spectrum, an MS spectrum, or the like.
- the benzamide compound of the present invention is not particularly limited depending on the production method thereof. Further, the salt of compound (II) can be obtained from compound (II) by a known method. The benzamide compound of the present invention can be obtained by a known production method. As a method for producing the benzamide compound of the present invention, for example, the methods described in Examples and the like can be mentioned.
- the benzamide compound of the present invention exhibits high herbicidal activity under both soil treatment and foliage treatment under upland farming conditions.
- the benzamide compound of the present invention includes goosegrass, erigeron sumatren, goosegrass, inubie, erigeron sumatren, kinenokoro, erigeron sumatren, morokoshi, erigeron sumatren, merigeron sumatren, amaranthus palmeri, horseweed, horseweed, horseweed, horseweed, horseweed, horseweed, horseweed, horseweed, horseweed, horseweed, horseweed, horseweed.
- the benzamide compound of the present invention may exhibit a plant growth-regulating effect such as a growth-suppressing effect on useful plants such as crops, ornamental plants, and fruit trees.
- the benzamide compound of the present invention has excellent herbicidal activity against paddy weeds such as Nobie, Cyperus difformis, Sagittaria trifolia, and Scirpus juncoides, and may show selectivity for rice.
- the benzamide compound of the present invention can also be applied to control weeds in orchards, lawns, railroad tracks, vacant lots and the like.
- the herbicide of the present invention contains at least one selected from the group consisting of the benzamide compound of the present invention, that is, the compound (II) and the salt of the compound (II) as an active ingredient.
- the herbicide of the present invention may consist only of the benzamide compound of the present invention, or may be a dosage form generally available as a pesticide, for example, a wettable powder, a granule, a powder, an emulsion, a water solvent, a suspension agent. , Flowable or the like.
- Known additives or carriers can be used in the formulation.
- vegetable powders such as soybean flour and wheat flour, diatomaceous earth, apatite, talc, talc, bentonite, pyrophyllite, clay and other mineral fine powders, sodium benzoate, urea, and sardine. And other organic and inorganic compounds can be used.
- petroleum fractions such as kerosine, xylene and solventnaphtha, cyclohexane, cyclohexanone, dimethylformamide, dimethyl sulfoxide, alcohol, acetone, trichloroethylene, methyl isobutyl ketone, mineral oil, vegetable oil, water Etc. can be used.
- a surfactant can be added as needed.
- Surfactants include alkylphenyl ethers with polyoxyethylene, alkyl ethers with polyoxyethylene, higher fatty acid esters with polyoxyethylene, sorbitan higher fatty acid esters with polyoxyethylene, and polyoxyethylene.
- Nonionic surfactant such as added tristyrylphenyl ether, sulfate ester salt of alkylphenyl ether added with polyoxyethylene, alkylnaphthalene sulfonate, polycarboxylate, lignin sulfonate, alkylnaphthalene sulfonate
- examples of the formaldehyde condensate, isobutylene-maleic anhydride copolymer and the like can be mentioned.
- the concentration of the active ingredient can be appropriately set according to the dosage form.
- the concentration of the active ingredient in the wettable powder is preferably 5 to 90% by weight, more preferably 10 to 85% by weight.
- the concentration of the active ingredient in the emulsion is preferably 3 to 70% by weight, more preferably 5 to 60% by weight.
- the concentration of the active ingredient in the granules is preferably 0.01 to 50% by weight, more preferably 0.05 to 40% by weight.
- the wettable powder or emulsion thus obtained is diluted with water to a predetermined concentration to form a suspension or emulsion, and the granules are directly sprayed or mixed on the soil before or after germination of weeds. be able to.
- an appropriate amount of 0.1 g or more of the active ingredient can be applied per hectare.
- the herbicide of the present invention can also be used in combination with known fungicides, insecticides, acaricides, herbicides, plant growth regulators, fertilizers, phytotoxicity mitigating agents (safeners) and the like.
- a higher effect can be expected due to the synergistic action of the mixed drug.
- a combination with a plurality of known herbicides is also possible.
- herbicidal active ingredients used in the present invention are not particularly limited, and examples thereof include the following.
- Pyridadinone type Pyridadinone type; carbamate type such as desmedipham, phenmedipham, swep; chlorobromuron, chlorotoluron, chloroxuron, dimefuron, DCMU ( Diuron), ethidimuron, fenuron, fluometuron, isoproturon, isouron, linuron, metabenzthiazuron, metobromron, metobrom.
- Ureas such as metoxuron, monolinuron, neburon, siduron, tebuthiuron, metobenzuron, karbutilate; DCPA (propanil), CMMP (penta) Nocroll Amide system such as (pentanochlor); anilide system such as cypromid; nitrile system such as bromofenoxim, bromoxynil, ioxynil; benzothia dinone system such as bentazone (bentazone) Pyridazines such as pyridate and pyridafol; Others that are said to show herbicidal effect by inhibiting photosynthesis of plants such as metazole.
- Bipyridylium system such as diquat and paraquat; other substances that themselves become free radicals in the plant body and generate active oxygen to show rapid herbicidal effect.
- oxazolidinedione system benzfendizone, butafenacil and other pyrimidindione system; saflufenacil and other sulfonylamide system; flufenpyr-ethyl and other pyridazine system; Inhibiting chlorophyll biosynthesis in plants such as pyrachlonil, profluazol, tiafenacil, and trifludimoxazin, and abnormally accumulating photosensitizing peroxide substances in the plant body. It is said to show herbicidal effect.
- Glyphosates such as glyphosate, glyphosate-ammonium, glyphosate-isopropylamine, glyphosate trimesium (sulfosate); other EPSP synthase inhibitors
- glufosinate h) Glufosinate
- glufosinate-ammonium phosphinic acid
- phosphinic acid such as bialaphos (bilanafos), etc.
- Glutamine synthase inhibition and other plant amino acid biosynthesis are said to show herbicidal effect. ..
- Oxyacetamides such as flufenacet and mefenacet; fentrazami Tetrazolinone type such as de (fentrazamide); other anilofos, indanofan, cafenstrole, piperophos, methiozolin, fenoxasulfone, pyroxasulfone, ip
- the herbicidal effect is shown by inhibiting microtubule polymerization, microtubule formation, and cell division of plants such as fenoxasulfone, or by inhibiting the biosynthesis of very long chain fatty acids (VLCFA). What has been done.
- Nitrile type such as DBN (dichlobenil), DCBN (chlorthiamid); benzamide type such as isoxaben; triazolocarboxamide type such as flupoxam; quinclorac etc.
- Quinoline carboxylic acid system Others It is said that it exhibits herbicidal effect by inhibiting cell wall (cellulose) synthesis such as triaziflam and indaziflam.
- Thiocarbamates such as prosulfocarb, benthiocarb (thiobencarb), tiocarbazil, triallate, vernolate, diallate
- phosphorodithio such
- Phenoxycarboxylic acids such as clomeprop, 2,4-PA (2,4-D), 2,4-DB, dichlorprop, MCPA, MCPB, MCPP (mecoprop) System; benzoic acid system such as chloramben, MDBA (dicamba), TCBA (2,3,6-TBA); clopyralid, aminopyralid, fluroxypyr, picloram , Triclopyr, halauxifen and other pyridinecarboxylic acid systems; quinclorac, quinmerac and other quinoline carboxylic acid systems; NPA (naptalam), diflufenzopyr ( Phthalamate semicarbazones such as diflufenzopyr); others Benazolin, diflufenzopyr, fluroxypyr, chlorflurenol, aminocyclopyrachlor, DAS534, etc. It is said to show herbicidal effect by disturbing the hormonal action of plants.
- Arylaminopropionic acid type such as flamprop-isopropyl; pyrazolium type such as difenzoquat; organic arsenic type such as DSMA and MSMA; other bromobutide, (chlor)- Chlorflurenol, cinmethylin, cumyluron, dazomet, daimuron, methyl-dymron, etobenzanid, hosamine, oxaziclomefone, oxaziclomefone (Oleic acid), pelargonic acid, pyributicarb, endothall, sodiumchlorate, metam, quinoclamine, cyclopyrimorate, tridiphan (Tridiphane), clacyfos and other herbicides.
- Safeners that can be used in the present invention include, for example, benoxacor, cloquintocet, cloquintocet-mexyl, cyometrinil, cyprosulfamide, dichloromid. (Dichlormid), dicyclonon, dietholate, fenchlorazole, fenchlorazole-ethyl, fenclorim, flurazole, fluxofenim, furilazole , isoxadifen (isoxadifen), isoxadifen-ethyl (isoxadifen - ethyl), mefenpyr (mefenpyr), mefenpyr-diethyl (mefenpyr-diethyl), Mefenato (mephenate), naphthalate Rick polyanhydride (naphthalic anhydride), oxabetrinil (oxabetrinil ) Etc. can be mentioned.
- formulation example Although some examples of formulations relating to the herbicide of the present invention are shown, the active ingredient compounds, additives and addition ratios are not limited to this example and can be changed in a wide range.
- the part in the formulation example indicates the part by weight.
- Wettable powder 20 parts of the compound of the present invention 20 parts of white carbon 20 parts of diatomaceous earth 52 parts of sodium alkyl sulfate 8 parts or more are uniformly mixed and finely pulverized to obtain a wettable powder having 20% of the active ingredient.
- Step 2 3- (6-bromo-2-fluoro-3- (trifluoromethyl) phenyl) propan-1-ol [3- (6-bromo-2-fluoro-3- (trifluoromethyl) phenyl) propan-1-ol]
- 5-Bromo-8- (trifluoromethyl) thiochroman (5.0 g) was dissolved in diethyl ether (56 mL) and stirred at ⁇ 78 ° C. To this was added n-butyllithium (2.76 M, 6.1 mL), and the mixture was further stirred for 30 minutes. Then, dry ice (4.0 g) was added at the same temperature, and the temperature was gradually raised to room temperature. The resulting reaction solution was poured into hydrochloric acid and then extracted with ethyl acetate. The obtained organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and filtered. The target product (3.5 g) was obtained by concentrating the filtrate under reduced pressure.
- Tables 1 and 2 show examples of the compounds of the present invention produced in the same manner as in the above synthesis examples.
- Table 1 shows the substituents in the compound represented by the formula (I). The melting point is also shown.
- Het-1 indicates 1-methyl-1H-tetrazol-5-yl group (1-Methyl-1H-tetrazol-5-yl)
- Het-2 is It shows 5-methyl-1,3,4-oxadiazol-2-yl group (5-Methyl-1,3,4-oxadiazol-2-yl)
- Het-3 is 1-methyl-1H-. It shows 1,2,4-triazol-5-yl group (1-Methyl-1H-1,2,4-triazol-5-yl).
- Table 4 shows an example of the compound of the present invention produced by the same method as in the above synthesis example.
- Table 4 shows the substituents in the compound represented by the formula (III). The melting point is also shown.
- " c Pr” indicates a cyclopropyl group
- " i Pr” indicates an isopropyl group
- "Et” indicates an ethyl group
- " t Bu” indicates a t-butyl group
- Me indicates a methyl group.
- N Pr indicates an n-propyl group
- Bz indicates a benzoyl group
- Ac indicates an acetyl group
- Ph indicates a phenyl group.
- Test Example 1 (1) Preparation of test emulsion POA allylphenyl ether (4.1 parts by weight), POE-POP glycol (1 part by weight), POE sorbitan laurate (0.8 parts by weight), glycerin (2.6 parts by weight) , Dimethylformamide (65.9 parts by weight), N-methylpyrrolidone (5.1 parts by weight), cyclohexanone (15.4 parts by weight), aromatic hydrocarbon (5.1 parts by weight) were mixed and dissolved. Emulsion was prepared. The compound of the present invention (4 mg) was dissolved in this emulsion (100 ⁇ L) to prepare a test emulsion.
- POA means “polyoxyalkylene”
- POE means “polyoxyethylene”
- POP means “polyoxypropylene”.
- the compounds shown in Table 6 were sprayed so as to have a spraying amount of 250 g per hectare. As a result, all the compounds showed 80% or more of herbicidal activity against crabgrass.
- the compounds shown in Table 7 were sprayed so as to have a spraying amount of 250 g per hectare. As a result, all the compounds showed 80% or more herbicidal activity against chamomile.
- Test Example 2 (1) Preparation of test emulsion A test emulsion was prepared according to the preparation method described in Test Example 1. (2) Stem and leaf spraying treatment Fill a 150 cm 2 pot with soil, sow seeds of oats (Avena sativa), Italian ryegrass (Lolium multiflorum), and silkybent (Apera spica-venti) on the surface layer, lightly cover with soil, and then greenhouse. Growing in.
- the compounds shown in Table 8 were sprayed so as to have a spraying amount of 250 g per hectare. As a result, all the compounds showed 80% or more herbicidal activity against oats.
- the compounds shown in Table 9 were sprayed so as to have a spraying amount of 250 g per hectare. As a result, all the compounds showed 80% or more herbicidal activity against Italian ryegrass.
- the compounds shown in Table 10 were sprayed so as to have a spraying amount of 250 g per hectare. As a result, all the compounds showed 80% or more herbicidal activity against Silkybent.
- the herbicidal activity of 80% or more is obtained even when the amount of spray is 64 g. showed that. Furthermore, with respect to compound number c-6, even at a spraying amount of 16 g, the herbicidal activity was 80% or more.
- the benzamide compounds of the present invention are compounds having a high herbicidal effect, including compounds that could not be exemplified. I can understand that there is.
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Abstract
Description
本願は、2019年6月4日に出願された日本国特許出願第2019-104650号に対し優先権を主張し、その内容をここに援用する。
本発明の課題は、低薬量でも確実な雑草防除効果を奏し、作物に対する薬害が少なく、且つ環境への安全性が高い、除草剤の有効成分として有用な新規ベンズアミド化合物および除草剤を提供することである。
Hetは、置換若しくは無置換の5員環のヘテロアリール基を示す。
R1は、置換若しくは無置換のC1~6アルキル基、置換若しくは無置換のC1~6アルコキシ基、置換若しくは無置換のC1~6アルキルチオ基、置換若しくは無置換のC6~10アリール基、置換若しくは無置換の5~6員環のヘテロアリール基、またはハロゲノ基を示す。
R2は、水素原子、置換若しくは無置換のC1~6アルキル基、置換若しくは無置換のC1~6アルキルカルボニル基、置換若しくは無置換のC1~6アルコキシカルボニル基、または置換若しくは無置換のC6~10アリールカルボニル基を示す。
X1は、酸素原子、またはスルホニル基を示す。
X2は、酸素原子、スルフェニル基、スルフィニル基、スルホニル基、-S(=NR)-で表される基、または-S(=O)(=NR)-で表される基を示す。
ここで、Rはそれぞれ独立に、水素原子、C1~6アルキル基、置換若しくは無置換のC1~6アルキルカルボニル基、置換若しくは無置換のC6~10アリール基、またはシアノ基を示す。
mは、0または1を示し、nは、0または1を示し、且つmとnの和は、1または2である。
Aは、置換若しくは無置換のC2~4アルキレン基、置換若しくは無置換のC2~3アルケニレン基、または置換若しくは無置換のC1~2アルキレンオキシC1~C2アルキレン基を示す。
R3は、水素原子、置換若しくは無置換のC1~6アルキル基、またはハロゲノ基を示す。
R4は、水素原子、置換若しくは無置換のC1~6アルキル基、またはハロゲノ基を示す。
Zは、酸素原子または硫黄原子を示す。
〔3〕mが0であり、且つnが1である〔1〕に記載の化合物またはその塩。
〔4〕〔1〕~〔3〕のいずれかに記載の化合物およびその塩からなる群から選ばれる少なくともひとつを有効成分として含有する除草剤。
一方、「置換(substituted)」の用語は、母核となる基のいずれかの水素原子が、母核と同一または異なる構造の基(置換基)で置換されていることを意味する。従って、「置換基」は、母核となる基に結合した他の基である。置換基は1つであってもよいし、2つ以上であってもよい。2つ以上の置換基は同じでもよいし、異なってもよい。
「C1~6」などの用語は、母核となる基の炭素原子数が1~6個などであることを表している。この炭素原子数には、置換基の中にある炭素原子の数を含まない。例えば、置換基としてエトキシ基を有するブチル基は、C2アルコキシC4アルキル基に分類する。
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-ヘキシル基などのC1~6アルキル基;
ビニル基、1-プロペニル基、2-プロペニル基(アリル基)、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-プロペニル基などのC2~6アルケニル基;
エチニル基、1-プロピニル基、2-プロピニル基、1-ブチニル基、2-ブチニル基、3-ブチニル基、1-メチル-2-プロピニル基などのC2~6アルキニル基;
フェニル基、ナフチル基などのC6~10アリール基;
ベンジル基、フェネチル基などのC6~10アリールC1~6アルキル基;
3~6員環のヘテロシクリル基;
3~6員環のへテロシクリルC1~6アルキル基;
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、s-ブトキシ基、i-ブトキシ基、t-ブトキシ基などのC1~6アルコキシ基;
ビニルオキシ基、アリルオキシ基、プロペニルオキシ基、ブテニルオキシ基などのC2~6アルケニルオキシ基;
エチニルオキシ基、プロパルギルオキシ基などのC2~6アルキニルオキシ基;
フェノキシ基、ナフトキシ基などのC6~10アリールオキシ基;
ベンジルオキシ基、フェネチルオキシ基などのC6~10アリールC1~6アルコキシ基;
チアゾリルオキシ基、ピリジルオキシ基などの5~6員環のヘテロアリールオキシ基;
チアゾリルメチルオキシ基、ピリジルメチルオキシ基などの5~6員環のヘテロアリールC1~6アルキルオキシ基;
アセチル基、プロピオニル基などのC1~6アルキルカルボニル基;
ホルミルオキシ基;
アセチルオキシ基、プロピオニルオキシ基などのC1~6アルキルカルボニルオキシ基;
ベンゾイル基などのC6~10アリールカルボニル基;
メトキシカルボニル基、エトキシカルボニル基、n-プロポキシカルボニル基、i-プロポキシカルボニル基、n-ブトキシカルボニル基、t-ブトキシカルボニル基などのC1~6アルコキシカルボニル基;
メトキシカルボニルオキシ基、エトキシカルボニルオキシ基、n-プロポキシカルボニルオキシ基、i-プロポキシカルボニルオキシ基、n-ブトキシカルボニルオキシ基、t-ブトキシカルボニルオキシ基などのC1~6アルコキシカルボニルオキシ基;
カルボキシル基;
クロロメチル基、クロロエチル基、トリフルオロメチル基、1,2-ジクロロ-n-プロピル基、1-フルオロ-n-ブチル基などのC1~6ハロアルキル基;
2-クロロ-1-プロペニル基、2-フルオロ-1-ブテニル基などのC2~6ハロアルケニル基;
4,4-ジクロロ-1-ブチニル基、4-フルオロ-1-ペンチニル基、5-ブロモ-2-ペンチニル基などのC2~6ハロアルキニル基;
トリフルオロメトキシ基、2-クロロ-n-プロポキシ基、2,3-ジクロロブトキシ基などのC1~6ハロアルコキシ基;
2-クロロプロペニルオキシ基、3-ブロモブテニルオキシ基などのC2~6ハロアルケニルオキシ基;
クロロアセチル基、トリフルオロアセチル基、トリクロロアセチル基などのC1~6ハロアルキルカルボニル基;
メチルアミノ基、ジメチルアミノ基、ジエチルアミノ基などのC1~6アルキル置換アミノ基;
アニリノ基、ナフチルアミノ基などのC6~10アリールアミノ基;
ベンジルアミノ基、フェネチルアミノ基などのC6~10アリールC1~6アルキルアミノ基;
ホルミルアミノ基;
アセチルアミノ基、プロパノイルアミノ基、ブチリルアミノ基、i-プロピルカルボニルアミノ基などのC1~6アルキルカルボニルアミノ基;
メトキシカルボニルアミノ基、エトキシカルボニルアミノ基、n-プロポキシカルボニルアミノ基、i-プロポキシカルボニルアミノ基などのC1~6アルコキシカルボニルアミノ基;
カルバモイル基、ジメチルアミノカルボニル基、フェニルアミノカルボニル基、N-フェニル-N-メチルアミノカルボニル基などの無置換若しくは置換基を有するアミノカルボニル基;
イミノメチル基、(1-イミノ)エチル基、(1-イミノ)-n-プロピル基などのイミノC1~6アルキル基;
N-ヒドロキシ-イミノメチル基、(1-(N-ヒドロキシ)-イミノ)エチル基、(1-(N-ヒドロキシ)-イミノ)プロピル基、N-メトキシ-イミノメチル基、(1-(N-メトキシ)-イミノ)エチル基などの置換若しくは無置換のN-ヒドロキシイミノC1~6アルキル基;
アミノカルボニルオキシ基;
エチルアミノカルボニルオキシ基、ジメチルアミノカルボニルオキシ基などのC1~6アルキル置換アミノカルボニルオキシ基;
メチルチオ基、エチルチオ基、n-プロピルチオ基、i-プロピルチオ基、n-ブチルチオ基、i-ブチルチオ基、s-ブチルチオ基、t-ブチルチオ基などのC1~6アルキルチオ基;
トリフルオロメチルチオ基、2,2,2-トリフルオロエチルチオ基などのC1~6ハロアルキルチオ基;
フェニルチオ基、ナフチルチオ基などのC6~10アリールチオ基;
チアゾリルチオ基、ピリジルチオ基などの5~6員環のヘテロアリールチオ基;
トリフルオロメチルスルフィニル基、2,2,2-トリフルオロエチルスルフィニル基などのC1~6ハロアルキルスルフィニル基;
フェニルスルフィニル基などのC6~10アリールスルフィニル基;
チアゾリルスルフィニル基、ピリジルスルフィニル基などの5~6員環のヘテロアリールスルフィニル基;
メチルスルホニル基、エチルスルホニル基、t-ブチルスルホニル基などのC1~6アルキルスルホニル基;
トリフルオロメチルスルホニル基、2,2,2-トリフルオロエチルスルホニル基などのC1~6ハロアルキルスルホニル基;
フェニルスルホニル基などのC6~10アリールスルホニル基;
チアゾリルスルホニル基、ピリジルスルホニル基などの5~6員環のヘテロアリールスルホニル基;
メチルスルホニルオキシ基、エチルスルホニルオキシ基、t-ブチルスルホニルオキシ基などのC1~6アルキルスルホニルオキシ基;
トリフルオロメチルスルホニルオキシ基、2,2,2-トリフルオロエチルスルホニルオキシ基などのC1~6ハロアルキルスルホニルオキシ基;
トリフェニルシリル基などのトリC6~10アリール置換シリル基;
ペンタフルオロスルファニル基;
シアノ基;
ニトロ基;
6員環のヘテロアリール基としては、ピリジル基、ピラジニル基、ピリミジニル基、ピリダジニル基、トリアジニル基などを挙げることができる。
Hetは、置換若しくは無置換の5員環のヘテロアリール基を示す。
5員環のヘテロアリール基としては、ピロリル基、フリル基、チエニル基、イミダゾリル基、ピラゾリル基、オキサゾリル基、イソオキサゾリル基、チアゾリル基、イソチアゾリル基、トリアゾリル基(詳しくは、[1,2,3]トリアゾリル基、または[1,2,4]トリアゾリル基)、オキサジアゾリル基(詳しくは、[1,2,4]オキサジアゾリル基、または[1,3,4]オキサジアゾリル基)、チアジアゾリル基、テトラゾリル基などを挙げることができる。
好ましくは、1H-1,2,4-トリアゾール-5-イル基、4H-1,2,4-トリアゾール-3-イル基などのトリアゾリル基;1,3,4-オキサジアゾール-2-イル基などのオキサジアゾリル基;テトラゾール-5-イル基などのテトラゾリル基などが挙げられる。
〔R1〕
「C1~6アルコキシ基」としては、メトキシ基、エトキシ基、n-プロポキシ基、n-ブトキシ基、n-ペンチルオキシ基、n-ヘキシルオキシ基、i-プロポキシ基、i-ブトキシ基、s-ブトキシ基、t-ブトキシ基、i-ヘキシルオキシ基などを挙げることができる。
「C1-6アルキルチオ基」としては、メチルチオ基、エチルチオ基、n-プロピルチオ基、t-ブチルチオ基、1-エチルプロピルチオ基、n-ヘキシルチオ基、i-ヘキシルチオ基などを挙げることができる。
「C6~10アリール基」としては、フェニル基、ナフチル基などを挙げることができる。
「5~6員環のヘテロアリール基」とは、窒素原子、酸素原子および硫黄原子からなる群から選ばれる1、2、3または4個のヘテロ原子を環の構成原子として含む。ヘテロ原子が2個以上であるとき、それらは同じでもよいし、異なってもよい。
5員環のヘテロアリール基としては、ピロリル基、フリル基、チエニル基、イミダゾリル基、ピラゾリル基、オキサゾリル基、イソオキサゾリル基、チアゾリル基、イソチアゾリル基、トリアゾリル基、オキサジアゾリル基、チアジアゾリル基、テトラゾリル基などを挙げることができ、6員環のヘテロアリール基としては、ピリジル基、ピラジニル基、ピリミジニル基、ピリダジニル基、トリアジニル基などを挙げることができる。
「ハロゲノ基」としては、フルオロ基、クロロ基、ブロモ基、イオド基などを挙げることができる。
R2は、水素原子、置換若しくは無置換のC1~6アルキル基、置換若しくは無置換のC1~6アルキルカルボニル基、置換若しくは無置換のC1~6アルコキシカルボニル基、または置換若しくは無置換のC6~10アリールカルボニル基を示す。
「C1~6アルキル基」上の置換基としては、フルオロ基、クロロ基、ブロモ基、イオド基などのハロゲノ基;水酸基;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、s-ブトキシ基、i-ブトキシ基、t-ブトキシ基などのC1~6アルコキシ基;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などのC1~6ハロアルコキシ基;フェニル基、ナフチル基などのC6~10アリール基;4-クロロフェニル基、4-トリフルオロメチルフェニル基、4-トリフルオロメトキシフェニル基などの、ハロゲノ基、C1~6ハロアルキル基、またはC1~6ハロアルコキシ基で置換されたC6~10アリール基;メトキシカルボニルオキシ基などのC1~6アルコキシカルボニルオキシ基;シアノ基が挙げられる。
「C1~6アルコキシカルボニル基」としては、メトキシカルボニル基、エトキシカルボニル基、n-プロポキシカルボニル基、i-プロポキシカルボニル基、n-ブトキシカルボニル基、i-ブトキシカルボニル基、s-ブトキシカルボニル基、t-ブトキシカルボニル基、n-ペンチルオキシカルボニル基、n-ヘキシルオキシカルボニル基などを挙げることができる。
「C6~10アリールカルボニル基」としては、ベンゾイル基、ナフチルカルボニル基などを挙げることができる。
X1は、酸素原子、またはスルホニル基を示す。
X2は、酸素原子、スルフェニル基、スルフィニル基、スルホニル基、-S(=NR)-で表される基、または-S(=O)(=NR)-で表される基を示す。
ここで、Rはそれぞれ独立に、水素原子、C1~6アルキル基、置換若しくは無置換のC1~6アルキルカルボニル基、置換若しくは無置換のC6~10アリール基、またはシアノ基を示す。
mは、0または1を示し、nは、0または1を示し、且つmとnの和は、1または2である。
Rにおける「C1~6アルキルカルボニル基」および「C1~6アルキルカルボニル基」上の置換基の具体例としては、R2において例示したものと同じものを挙げることができる。
Rにおける「C6~10アリール基」の具体例、および「C6~10アリール基」上の置換基の具体例としては、R1において例示したものと同じものを挙げることができる。
Aは、置換若しくは無置換のC2~4アルキレン基、置換若しくは無置換のC2~3アルケニレン基、または置換若しくは無置換のC1~2アルキレンオキシC1~C2アルキレン基を示す。
「C2~4アルキレン基」としては、ジメチレン基、トリメチレン基、テトラメチレン基、などを挙げることができる。
「C2~3アルケニレン基」としては、ビニレン基(-CH=CH-)、プロペニレン基(-CH=CH-CH2-、-CH2-CH=CH-)などを挙げることができる。
「C1~2アルキレンオキシC1~C2アルキレン基」としては、メチレンオキシメチレン基(-CH2-O-CH2-)、メチレンオキシジメチレン基(-CH2-O-CH2CH2-)、ジメチレンオキシメチレン基(-CH2CH2-O-CH2-)、ジメチレンオキシジメチレン基(-CH2CH2-O-CH2CH2-)を挙げることができる。
R3は、水素原子、置換若しくは無置換のC1~6アルキル基、またはハロゲノ基を示す。
R4は、水素原子、置換若しくは無置換のC1~6アルキル基、またはハロゲノ基を示す。
Zは、酸素原子または硫黄原子を示す。
「C1~6アルキル基」上の置換基の具体例としては、R1において例示したものと同じものを挙げることができる。
本発明においては、R3が水素原子であり、且つR4が水素原子であることが好ましい。
本発明においては、Zは酸素原子であることが好ましい。
本発明の好ましい化合物の形態として、下記の式(I)で表すことができる。
R5は、置換若しくは無置換のC1~6アルキル基または置換若しくは無置換のC3~6シクロアルキル基を示す。
R5における、「C1~6アルキル基」の具体例としては、R1において例示したものと同じものを挙げることができる。
R5における「C3~6シクロアルキル基」の具体例としては、シクロプロピル基、シクロブチル基、シクロペンチル基、シクロヘキシル基を挙げることができる。
「C1~6アルキル基」および「C3~6シクロアルキル基」上の置換基の具体例としては、R1において「C1~6アルキル基」の置換基として例示したものと同じもの、および、シクロプロピル基等のC3~6シクロアルキル基を挙げることができる。
化合物(II)の塩としては、リチウム、ナトリウム、カリウム等のアルカリ金属の塩;カルシウム、マグネシウム等のアルカリ土類金属の塩;鉄、銅等の遷移金属の塩;アンモニウム塩;トリエチルアミン、トリブチルアミン、ピリジン、ヒドラジン等の有機塩基の塩等を挙げることができる。
本発明のベンズアミド化合物は、メヒシバ、オニメヒシバ、オヒシバ、イヌビエ、エノコログサ、キンエノコロ、アキノエノコログサ、モロコシ、オオクサキビ、メリケンニクキビ、アメリカアサガオ、マメアサガオ、ホシアサガオ、ヒルガオ、マルバルコウ、ハマスゲ、カヤツリグサ、ショクヨウガヤツリ、コゴメガヤツリ、ホウキギ、イチビ、アメリカキンコジカ、アオゲイトウ、オオホナガアオゲイトウ、イヌビユ、エホソバイヌビユ、ヒメムカシヨモギ、オオアレチノギク、ヒメジョオン、オオオナモミ、ブタクサ、オオブタクサ、エンバク、イタリアンライグラス、セイヨウヌカボ、アレチノチャヒキ、スズメノチャヒキ、スズメノカタビラ、スズメノテッポウ、ブラックグラス、シロザ、ツメクサ、カミツレ、イヌカミツレ、ヤエムグラ、コハコベ、オオイヌノフグリ、イヌタデ、オオイヌタデ、ソバカズラ、ホトケノザ、オドリコソウ、ヒメオドリコソウ等の各種畑雑草に有効で、トウモロコシ、コムギ等の作物に選択性を示すことがある。
また、本発明のベンズアミド化合物は、作物、観賞用植物、果樹等の有用植物に対し、生育抑制作用等の植物成長調節作用を示すことがある。
また、本発明のベンズアミド化合物は、水田雑草のノビエ、タマガヤツリ、オモダカ、ホタルイ等に対し、優れた殺草効力を有し、イネに選択性を示すことがある。
更に本発明のベンズアミド化合物は、果樹園、芝生、線路端、空き地等の雑草の防除にも適用することができる。
本発明の除草剤は、本発明のベンズアミド化合物のみからなるものであってもよいし、農薬として一般にとり得る剤形、例えば、水和剤、粒剤、粉剤、乳剤、水溶剤、懸濁剤、フロアブル等に製剤化したものであってもよい。
固体の剤形を目的とする場合は、大豆粉、小麦粉等の植物性粉末、珪藻土、燐灰石、石こう、タルク、ベントナイト、パイロフィライト、クレイ等の鉱物性微粉末、安息香酸ソーダ、尿素、芒硝等の有機及び無機化合物を用いることができる。
(a) クロジナホッププロパルギル(clodinafop-propargyl)、シハロホップブチル(cyhalofop-butyl)、ジクロホップメチル(diclofop-methyl)、フェノキサプロップP エチル(fenoxaprop-P-ethyl)、フルアジホップP(fluazifop-P)、フルアジホップ-P-ブチル(fluazifop-P-butyl)、ハロキシホップメチル(haloxyfop-methyl)、ピリフェノップナトリウム(pyriphenop-sodium)、プロパキザホップ(propaquizafop)、キザロホップP エチル(quizalofop-P-ethyl)、メタミホップ(metamifop)等のアリ-ルオキシフェノキシプロピオン酸エステル系;アロキシジム(alloxydim)、ブトロキシジム(butroxydim)、クレトジム(clethodim)、シクロキシジム(cycloxydim)、プロホキシジム(profoxydim)、セトキシジム(sethoxydim)、テプラロキシジム(tepraloxydim)、トラルコキシジム(tralkoxydim)等のシクロヘキサンジオン系;ピノキサデン(pinoxaden)等のフェニルピラゾリン系;その他の植物のアセチルCoAカルボキシラーゼを阻害することで除草効力を示すとされているもの。
(h) グルホシネート(glufosinate)、グルホシネートアンモニウム(glufosinate-ammonium)、ビアラホス(ビラナホス(bilanafos))等のホスフィン酸系等のグルタミン合成酵素阻害その他の植物のアミノ酸生合成を阻害することで除草効力を示すとされているもの。
本発明の除草剤に関する製剤例を若干示すが、有効成分化合物、添加物及び添加割合は、本実施例にのみ限定されることなく、広い範囲で変更可能である。製剤実施例中の部は重量部を示す。
本発明化合物 20部
ホワイトカーボン 20部
ケイソウ土 52部
アルキル硫酸ソーダ 8部
以上を均一に混合、微細に粉砕して、有効成分20%の水和剤を得る。
本発明化合物 20部
キシレン 55部
ジメチルホルムアミド 15部
ポリオキシエチレンフェニルエーテル 10部
以上を混合、溶解して有効成分20%の乳剤を得る。
本発明化合物 5部
タルク 40部
クレー 38部
ベントナイト 10部
アルキル硫酸ソーダ 7部
以上を均一に混合して微細に粉砕後、直径0.5~1.0mmの粒状に造粒して有効成分5%の粒剤を得る。
N-(1-メチル-1H-テトラゾール-5-イル)-8-(トリフルオロメチル)チオクロマン-5-カルボキシアミド[N-(1-methyl-1H-tetrazol-5-yl)-8-(trifluoromethyl)thiochromane-5-carboxamide](化合物番号a-37)の合成
(工程1)
3-(6-ブロモ-2-フルオロ-3-(トリフルオロメチル)フェニル)プロピオン酸[3-(6-bromo-2-fluoro-3-(trifluoromethyl)phenyl)propanoic acid]の合成
得られた反応溶液に塩酸を加えた後、析出した結晶を濾別し、得られた結晶を乾燥させることによって目的物53.8gを得た。
3-(6-ブロモ-2-フルオロ-3-(トリフルオロメチル)フェニル)プロパン-1-オール[3-(6-bromo-2-fluoro-3-(trifluoromethyl)phenyl)propan-1-ol]の合成
得られた反応溶液を塩酸に注ぎ、次いで酢酸エチルで抽出した。得られた有機層を飽和食塩水で洗浄し、無水硫酸マグネシウムで乾燥させ、ろ過した。ろ液を減圧濃縮し、得られた残渣をシリカゲルカラムクロマトグラフィーで精製することによって目的物28.9gを得た。
1-ブロモ-2-(3-クロロプロピル)-3-フルオロ-4-(トリフルオロメチル)ベンゼン[1-bromo-2-(3-chloropropyl)-3-fluoro-4-(trifluoromethyl)benzene]の合成
得られた反応溶液を減圧濃縮し、得られた残渣をシリカゲルカラムクロマトグラフィーで精製することによって目的物16.4gを得た。
5-ブロモ-8-(トリフルオロメチル)チオクロマン[5-bromo-8-(trifluoromethyl)thiochromane]の合成
得られた反応溶液を水に注ぎ、次いで酢酸エチルで抽出した。得られた有機層を飽和食塩水で洗浄し、無水硫酸マグネシウムで乾燥させ、ろ過した。ろ液を減圧濃縮し、得られた残渣をシリカゲルカラムクロマトグラフィーで精製することによって目的物6.8gを得た。
8-(トリフルオロメチル)チオクロマン-5-カルボン酸[8-(trifluoromethyl)thiochromane-5-carboxylic acid]の合成
得られた反応溶液を塩酸に注ぎ、次いで酢酸エチルで抽出した。得られた有機層を飽和食塩水で洗浄し、無水硫酸マグネシウムで乾燥させ、ろ過した。ろ液を減圧濃縮することによって目的物(3.5g)を得た。
N-(1-メチル-1H-テトラゾール-5-イル)-8-(トリフルオロメチル)チオクロマン-5-カルボキシアミド[N-(1-methyl-1H-tetrazol-5-yl)-8-(trifluoromethyl)thiochromane-5-carboxamide]の合成
得られた残渣をピリジンに溶解させ、室温で撹拌した、これに、1-メチル-1H-テトラゾール-5-アミン(0.3g)およびN,N-ジメチル-4-アミノピリジン(30mg)を加え、60℃で一晩撹拌した。
得られた反応溶液を減圧濃縮し、得られた残渣をシリカゲルカラムクロマトグラフィーで精製することによって目的物(0.48g)を得た。
表1中のHetの欄で、「Het-1」は1-メチル-1H-テトラゾール-5-イル基(1-Methyl-1H-tetrazol-5-yl)を示し、「Het-2」は、5-メチル-1,3,4-オキサジアゾール-2-イル基(5-Methyl-1,3,4-oxadiazol-2-yl)を示し、「Het-3」は1-メチル-1H-1,2,4-トリアゾール-5-イル基(1-Methyl-1H-1,2,4-triazol-5-yl)を示す。表1中、「Ac」はアセチル基を示し、「Bn」はベンジル基を、「Ph」はフェニル基を、「Me」はメチル基を、「Bz」はベンゾイル基を、「Et」はエチル基を、それぞれ示す。
表1および2に記載した化合物のうち、融点の欄に*を付した化合物は、非晶または粘性オイルの性状を有する化合物であった。その1H-NMRデータを表3に示す。
表4中、「cPr」はシクロプロピル基を示し、「iPr」はイソプロピル基を、「Et」はエチル基を、「tBu」はt-ブチル基を、「Me」はメチル基を、「nPr」はn-プロピル基を、「Bz」はベンゾイル基を、「Ac」はアセチル基を、「Ph」はフェニル基をそれぞれ示す。
次に本発明のベンズアミド化合物が除草剤の有効成分として有用であることを以下の試験例で示す。
(1)試験用乳剤の調製
POAアリルフェニルエーテル(4.1重量部)、POE-POPグリコール(1重量部)、POEソルビタンラウレート(0.8重量部)、グリセリン(2.6重量部)、ジメチルホルムアミド(65.9重量部)、N-メチルピロリドン(5.1重量部)、シクロヘキサノン(15.4重量部)、芳香族炭化水素(5.1重量部)を混合し溶解させて、乳剤を調製した。この乳剤(100μL)に対し、本発明化合物(4mg)を溶解させて、試験用乳剤を調製した。なお、POAは「ポリオキシアルキレン」を、POEは「ポリオキシエチレン」を、POPは「ポリオキシプロピレン」を意味する。
(2)茎葉散布処理
150cm2のポットに土壌を充填し、表層にメヒシバ(Digitaria ciliaris)およびカミツレ(Matricaria chamomilla)の種子を播き、軽く覆土した後に温室内で生育させた。各植物が2~4cmの草丈に生育した時点で、所定の有効成分量になるように上記の試験用乳剤を希釈し、ヘクタール当たり250Lの散布水量にて小型噴霧器で茎葉部に散布した。
(3)評価
2週間から3週間後、雑草ごとに無処理区および処理区の地上部生草重を測定し、下記の算出式によって殺草率を算出した。
(4)殺草率の算出式
殺草率(%)=(無処理区の地上部生草重-処理区の地上部生草重)/(無処理区の地上部生草重)×100
(1)試験用乳剤の調製
試験例1に記載の調製方法に従って、試験用乳剤を調製した。
(2)茎葉散布処理
150cm2のポットに土壌を充填し、表層にエンバク(Avena sativa)、イタリアンライグラス(Lolium multiflorum)、およびセイヨウヌカボ(Apera spica-venti)の種子を播き、軽く覆土した後に温室内で生育させた。エンバクが16~20cm、イタリアンライグラスがが10~14cm、セイヨウヌカボが2~4cmの草丈に生育した時点で、所定の有効成分量になるように上記の試験用乳剤を希釈し、ヘクタール当たり250Lの散布水量にて小型噴霧器で茎葉部に散布した。
(3)評価
3週間後、雑草ごとに無処理区および処理区の地上部生草重を測定し、下記の算出式によって殺草率を算出した。
(4)殺草率の算出式
殺草率(%)=(無処理区の地上部生草重-処理区の地上部生草重)/(無処理区の地上部生草重)×100
さらに、化合物番号a-38、c-5、およびc-6については、いずれも16gの散布量でも、80%以上の殺草活性を示した。
さらに、化合物番号c-6については、16gの散布量でも、80%以上の殺草活性を示した。
Claims (4)
- 式(II)で表される化合物またはその塩。
Hetは、置換若しくは無置換の5員環のヘテロアリール基を示す。
R1は、置換若しくは無置換のC1~6アルキル基、置換若しくは無置換のC1~6アルコキシ基、置換若しくは無置換のC1~6アルキルチオ基、置換若しくは無置換のC6~10アリール基、置換若しくは無置換の5~6員環のヘテロアリール基、またはハロゲノ基を示す。
R2は、水素原子、置換若しくは無置換のC1~6アルキル基、置換若しくは無置換のC1~6アルキルカルボニル基、置換若しくは無置換のC1~6アルコキシカルボニル基、または置換若しくは無置換のC6~10アリールカルボニル基を示す。
X1は、酸素原子、またはスルホニル基を示す。
X2は、酸素原子、スルフェニル基、スルフィニル基、スルホニル基、-S(=NR)-で表される基、または-S(=O)(=NR)-で表される基を示す。
ここで、Rはそれぞれ独立に、水素原子、C1~6アルキル基、置換若しくは無置換のC1~6アルキルカルボニル基、置換若しくは無置換のC6~10アリール基、またはシアノ基を示す。
mは、0または1を示し、nは、0または1を示し、且つmとnの和は、1または2である。
Aは、置換若しくは無置換のC2~4アルキレン基、置換若しくは無置換のC2~3アルケニレン基、または置換若しくは無置換のC1~2アルキレンオキシC1~C2アルキレン基を示す。
R3は、水素原子、置換若しくは無置換のC1~6アルキル基、またはハロゲノ基を示す。
R4は、水素原子、置換若しくは無置換のC1~6アルキル基、またはハロゲノ基を示す。
Zは、酸素原子または硫黄原子を示す。 - R3が水素原子であり、R4が水素原子であり、且つZが酸素原子である請求項1に記載の化合物またはその塩。
- mが0であり、且つnが1である請求項1に記載の化合物またはその塩。
- 請求項1~3のいずれかに記載の化合物およびその塩からなる群から選ばれる少なくともひとつを有効成分として含有する除草剤。
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