WO1996025413A1 - Isoxazole derivatives - Google Patents
Isoxazole derivatives Download PDFInfo
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- WO1996025413A1 WO1996025413A1 PCT/JP1996/000299 JP9600299W WO9625413A1 WO 1996025413 A1 WO1996025413 A1 WO 1996025413A1 JP 9600299 W JP9600299 W JP 9600299W WO 9625413 A1 WO9625413 A1 WO 9625413A1
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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
- A01N43/80—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 one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
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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
- C07D409/06—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 carbon chain containing only aliphatic carbon atoms
-
- 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
- C07D409/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing three or more hetero rings
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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
- C07D413/06—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 carbon chain containing only aliphatic carbon atoms
Definitions
- the present invention relates to a novel isoxazole derivative and a herbicide containing the same as an active ingredient.
- Atrazine which is a triazine herbicide, and arachlor and metolachlor, which are chloroacetanilide herbicides
- atrazine has low activity against grass weeds, and araclor and metrachlor have low activity against broadleaf weeds. Therefore, it is currently difficult to control grasses and broadleaf weeds at once with a single agent. Even if these drugs are mixed, a sufficient herbicidal effect cannot be obtained. Furthermore, these herbicides require high drug m and are environmentally unfriendly.
- An object of the present invention is to find a novel isoxazole derivative which can be selectively controlled by a small amount and a herbicide containing the same as an active ingredient. Disclosure of the invention
- the present invention provides a compound represented by the general formula (I)
- R 1 is a C! Ce alkyl group or a C :) to C 6 cycloalkyl group
- R 2 is a hydrogen atom or a C, -C 4 alkoxyl ponyl group
- R 3 to R 6 are each independently a hydrogen atom or C :, to C alkyl 3 ⁇ 4.
- n is an integer of 0, 1 or 2
- X is a hydrogen atom or C,-(: an alkyl group
- Y is a hydrogen atom, C, -C 4 alkyl group or a halogen atom
- Z is a group, Entering
- R 7 and R 8 are each independently a hydrogen atom, a C [ ⁇ ( ⁇ alkyl ⁇ ⁇ ⁇ ⁇ or C alkoxy group, and R 7 and / or R 8 are a C! C ⁇ alkyl group or C ,, C When it is an alkoxy group, the carbon atoms in the substituents may be substituted by 1 to 9 halogen atoms, and if the carbon number is from C 2 to C, an unsaturated bond may be formed.
- R 7 and R 8 are both C! ⁇ C., alkyl ⁇ or ⁇ ( ⁇ alkoxy)
- the 3 ⁇ 4 ⁇ atoms in both [bonds] are bonded to each other; It can also form a 3-7 membered ring.
- R 9 is an oxygen atom, a sulfur atom or a C: -C 4 alkoxyimino group, and when is a C] -C alkoxyimino group, the carbon atom in the substituted b group is 1-9 It may be substituted by a halogen atom, and if the number of atoms is C 2 to ( ⁇ , an unsaturated bond may be formed.] ⁇
- the isoxazole-inducing suspension indicated by (hereinafter, sometimes referred to as “Isoxazole-inducing suspension (I) of this species.)
- the present invention provides a compound of the general formula (la)
- R 1 is C to (: an alkyl group or a C 3 to C 6 cycloalkyl group
- R 2 is a hydrogen atom or C! ⁇ C alkoxycarbonyl group
- R 3 to R 6 are each independently a hydrogen atom or a C: to C alkyl group
- n is an integer of 0, 1 or 2
- X 1 is a C 1 to C alkyl group
- Y 1 is a C t C 4 alkyl group or a halogen atom
- R 7 and R 8 are each independently a hydrogen atom
- R 7 and / or R 8 are an alkyl group or a C i C alkoxy group.
- the 3 ⁇ 4 if an alkyl group or a C t C 4 alkoxy ⁇ , 11 substituent ⁇ 3 ⁇ 4 (child of ⁇ by 1 nine halogen ⁇ child; may be 3 conversion, the number of charcoal purple C 2
- R 7 and R s are both C, to (:., Alkyl 3 ⁇ 4 or ⁇ or C 4 alkoxy groups, then they may be substituted with each other.
- the carbon atoms in the group may be bonded to each other to form a 3- to 7-membered ring.
- R 9 is an oxygen atom, a sulfur atom or a C, C 4 alkoxyimino group, and when R 9 is a C, ⁇ (: 4 alkoxyimino group, the number of carbon atoms in the substituent is 19 It may be ii-transformed by a lipogen, or may form an unsaturated bond if the number of liposomes is C 2 C.] ⁇
- the isoxazole derivative represented by the formula is defined as a second subject.
- the present invention is based on the general formula (lb)
- R 1 is a c alkyl group or a C 3 C C cycloalkyl group
- 1 3 and 16 are each independently a hydrogen atom or. 1 to 04 alkyl groups
- n is an integer of 0 1 or 2;
- X is a hydrogen atom or a C, -C alkyl group;
- Y is a hydrogen atom, an alkyl group or a halogen atom
- R 1 Is C, a ⁇ C alkyl group, forms carbon atoms from 1 to 9 may be substituted by a halogen atom, form atomic number of unsaturated binding table if C 2 ⁇ C within a substituent May be. ⁇
- the third gist is an isoxazole derivative represented by
- the fourth gist of the present invention is a herbicide containing the isoxazole derivative (I) as an active ingredient (hereinafter, sometimes referred to as “the herbicide of the present invention”).
- the herbicide of the present invention BEST MODE FOR CARRYING OUT THE INVENTION
- the isoxazole derivative of the present invention has the general formula (I)
- the alkyl group include methyl Group, ethyl group, propyl group, butyl group, pentyl group, and hexyl group, and the bromo group, butyl group, pentyl group and hexyl group may be straight-chain or branched.
- a t -C 4 alkyl group more preferably a methyl group, an Echiru group or i one propyl group, particularly preferably a methylation group.
- C 3 -C 6 cycloalkyl group such as cyclopropyl group
- Examples thereof include a cyclobutyl group, a cyclopentyl group, and a cyclohexyl group, and a cyclobutyl group is preferred.
- R 2 is a hydrogen atom or C! ⁇ C 4 alkoxycarbonyl group, C! ⁇ ( ⁇
- the alkoxycarbonyl group includes, for example, a methoxycarbonyl group, an ethoxycarbonyl group, a propoxycarbonyl group, and a butoxycarbonyl group.
- the alkyl chains in the rubonyl group and the butoxycarbonyl group may be straight-chain or branched.
- R 2 is preferably a hydrogen atom.
- X is a hydrogen atom or an alkyl group; and C, to (: 4 alkyl groups include, for example, a methyl group, an ethyl group, a propyl group, and a butyl group, and the propyl group and the butyl group may be linear.
- X may preferably be a methyl group.
- Y represents a hydrogen atom, an alkyl group or a halogen atom, and ( ⁇ to (: 4 alkyl groups include those exemplified above in X.
- halogen atoms include fluorine, chlorine, bromine, and iodine.
- Y is preferably a hydrogen atom, a methyl group, fluorine or chlorine, and particularly preferably a methyl group.
- R 3 and RRR 6 are each independently a hydrogen atom or a (: ⁇ to ⁇ alkyl group, and examples of the alkyl group include those exemplified above in X. Preferably, they are a hydrogen atom or a methyl group.
- n the number of oxygen atoms bonded to the sulfur atom, and is an integer of 0, 1 or 2.
- n 0, sulfide
- n 1, sulfoxide
- n 2, sulfone.
- n 2 (sulfone).
- IT and R B are each independently a hydrogen atom in formula (a), C, ⁇ .
- Alkyl group or a C! -C a alkoxy group examples include those exemplified for X above.
- R 7 and / or R 8 are C, ⁇ . When it is an alkyl group, 1 to 9 of the hydrogen atoms in the carbon chain may be arbitrarily substituted with a halogen atom.
- Specific examples include one CH: F group, —CHF: group, — 3 CF groups, 1 CH 2 C1 group, — CC1 3 groups, 1 CH 2 Br group, — CH 2 I group, — CH 2 CH 2 F group, One CH 2 CF 3 group, one CF: CH 3 group one CF 2 CHF 2 group, one C: F 5 group, one CH 2 CH 2 C 1 radical, -CH 2 CC 1 3 group, one CC 1 2 CH Three , one C 2 C 15 , one CF (CH 3 ) two , one CH (CFa) CH 3, two — CH (CF 3 ) two , one CC 1 (CHa) two ,-CH ( CC 1 3 ) 2 groups, — CH 2 CH 2 CH 2 F group, 1 CH 2 CH 2 CF 3 group, 1 C 3 F- group, 1 CH 2 CH 2 CH 2 C 1 group, — CHC 1 CH 2 CH 3 groups, — CH 2 CH 2 CH 2 CH 2 F group, 1 CH 2 CH 2 CH 2 C 1 group,
- R 7 and / or R 8 is a C 2 -C alkyl group
- adjacent carbon atoms in the substituent may form a double bond or a triple bond.
- one CH C (CH 3) 2 group
- one CH 2 CH CH 2 group
- — CH CH 2 S—C ⁇ CH3 ⁇ 4, where one C (CH 3 ) CHCH 2 group.
- R 7 and R 8 are each independently a C, to (: 4 alkyl group, any carbon atom in R 7 and any carbon atom in R 8 are bonded to each other. And a 37-membered ring can be formed.
- alkoxy group examples include a methoxy group, an ethoxy group, a propoxy group, and a butoxy group, and the alkyl chain in the propoxy group and the butoxy group may be linear or branched.
- R 7 and / or R 8 is an alkoxy group has 1 to 9 of the hydrogen atoms in the carbon chain may be substitution by halogen atom, specific examples one ⁇ _CF 3 group one ⁇ _CC1 3 group one OCH 2 CH 2 F group, one 0CH 2 CH 2 C1 groups, one ⁇ _CH 2 CH 2 Br group, one OCH 2 CH 2 I group, one ⁇ _CH 2 CF 3 group, ten CH 2 CC1 3 groups, -0 CF (CH 3 ) 2 groups, 100 CH
- a 10 CH 2 CH 2 F group a 10 CH 2 CH 2 C 1 group, a 10 CH 2 CF 3 group, a -OCF (CH 3 ) 2 ⁇ , a 1 OCH (CF 3 ) CH 3 group, a -OCH ( CF 3) 2 groups, more preferably 1 OCH 2 CH 2 F group.
- R 7 and / or R 8 is a C 2 -C alkoxy group
- adjacent carbon atoms in the substituent may form a double bond or a triple bond.
- R 7 and R 8 are each independently an alkoxy group
- any carbon atom in R 7 and any carbon atom in R 8 are bonded to each other to form a 5- to 7-membered ring. Can be formed.
- Z is a group (a)
- R 3 is an oxygen atom, a sulfur atom, or ⁇ ( ⁇ alkoxyimino group, and C, ⁇ ( ⁇ alkoxyimino groups are methoxyimino group, ethoxyimino group, propoxyimino group
- R 9 is a C 2 -C 4 alkoxyimino group
- adjacent carbon atoms in the substituent may form a double bond or a triple bond.
- N_ ⁇ _CH CH 2 group
- N_ ⁇ _C (CH 3) CH 2 group
- NOCH 2 C (CH 3 ) CH 2 group
- NO CH (CH 3 ) CH CH 2 S, NOCH 2 C ⁇ CH group.
- N OCH 2 CH CH 2 group
- a NOCH 2 C ⁇ CH group.
- Z is the group (b) is R.
- the isoxazole derivative according to the second aspect of the present invention has the general formula (la)
- X 1 is a C! C ⁇ alkyl group, and the alkyl group is the same as that described in detail in the description of X in the general formula (I).
- Y 1 is a C- ⁇ 4 alkyl group or a halogen atom, and (, ⁇ ⁇ alkyl group and the halogen atom are described in detail in the description of Y in the formula (I) above.
- the isoxazole derivative according to the third aspect of the present invention has the general formula Ub) It is a compound shown by these.
- R l ° is a C! To C4 alkyl group, and the C alkyl group is the same as that described in detail in the description of X in the above general formula (I). Further, may have a carbon atom in the substituent which may be substituted with 1 to 9 halogen atoms, and may have an unsaturated bond if the number of atoms is C 2 to C 4. Specific examples of R 1D in this case are the same as those described in detail in the description of R 7 or R 8 in the general formula (I).
- isoxazole derivative represented by asymmetric carbon is present depending on the rice plant having the substituents R 3 and RRR f , and various isomers can exist, but the isoxazole derivative of the present invention has all isomers And mixtures thereof.
- the isoxazole derivative represented by the formula (1) has an asymmetric carbon depending on the type of the substituents R 7 and R 8 , and may have various isomers. Includes sexual leave and mixtures thereof.
- Z is represented by the group (b), and R 9 is ( ⁇ to (: an isoxazole derivative which is an alkoxyimino group, that is, the general formula (lb)
- the isoxazole derivative of the present invention Includes any or a mixture of these To Do,
- novel isoxazole derivative of the present invention can be produced by applying a known method as described in JP-A-3-118374 and JP-A-6-271554. As an example, the following reaction formula is given.
- R ′, R 3 , R ⁇ R 5 , R 6 , X, Y, Z and n are as defined in the formula U), and Q is C,-( ⁇ alkoxy group or C,- It is a C 4 dialkylamino group.
- the reaction formula 1 represents a 2-dialkylaminomethylidene derivative represented by the general formula (II) (when Q is dialkylamino) or a 2-alkoxymethylidene derivative (when Q is an alkoxy group). Reacts with hydroxyamine salts in a solvent such as ethanol or acetonitrile, if necessary, in the presence of a base such as triethylamine or sodium acetate at a temperature ranging from room temperature to the reflux temperature of the solvent used.
- a base such as triethylamine or sodium acetate
- the method for producing the isoxazolyl derivative of the present invention represented by the general formula (Id) is described below.
- the isoxazole derivative represented by the general formula (Id) is limited to the isoxazole derivative in which R 2 is hydrogen in the general formula (I).
- the isoxazole derivative of the present invention thus synthesized is subjected to a conventional method to distill off the solvent, dissolve the remaining S in a solvent such as methylene chloride, and dissolve the resulting chaos in water.
- the organic layer is dried with a dehydrating agent such as anhydrous sodium sulfate, and isolated by distilling off the solvent under reduced pressure.
- the 2-dialkylaminomethylidene derivative or 2-alkoxymethylidene derivative of the general formula (II) which is a starting material of the reaction formula 1, can be produced according to the reaction formula 2.
- R ′, RRR 5 , RX, Y, Z and n are as defined in the formula (I), and Q is a C! -C 4 alkoxy group or a 4- dialkylamino group.
- the reaction scheme 2 involves reacting a 1,3-diketone derivative of the general formula (VII) with an orthoester such as triethyl orthoformate at the reflux temperature of the reaction mixture in the presence of an acid catalyst such as acetic anhydride.
- an orthoester such as triethyl orthoformate
- an acid catalyst such as acetic anhydride
- the resulting 2-alkoxymethylidene derivative (II) or 2-dimethylaminomethylidene derivative (II) can be used for the synthesis of isoxazole-derived derivatives without purification.
- a method for producing an isoxazole derivative in which R 2 is C, to (: "an alkoxycarbonyl group, that is, an isoxazole derivative of the general formula (Ie) is described below.
- R ′, RRRR 6 , X, Y, Z and n are as defined in formula (I), R is a C! C ⁇ alkyl group, and Hal is a halogen atom.
- Reaction Scheme 3 is a reaction of the 1,3-diketone derivative of the general formula (VII) in an inert solvent such as dichloromethane or acetonitrile in the presence of a base such as magnesium ethoxide in the range of room temperature to the reflux temperature of the mixture.
- the isoxazole derivative represented by the general formula (Ie) is limited to the isoxazole derivative represented by the general formula (I), wherein R 2 is an alkoxycarbonyl group.
- the 1,3-diketone derivative of the general formula (VII), which is a starting material of the reaction formula 3, can be produced according to the reaction formula 4 or the reaction formula 5.
- R ′, R 3 , R ⁇ R 5 , RX, Y, Z and n are as defined in the formula (I), and Ha 1 is a halogen atom.
- Reaction formula 4 is a reaction represented by the following general formula (IV) by reacting a carboxylic acid represented by the general formula (III) with a halogenating agent such as thionyl chloride, oxalyl chloride and phosphorus oxychloride as a step.
- a carboxylic acid halide the compound of the general formula (IV) is used as a second step in the presence of a base such as sodium methoxide and magnesium ethoxide in an inert solvent such as tetrahydrofuran and getyl ether at room temperature.
- R ′, RRR 5 , RX, Y, Z and n are as defined in the formula (I), and R is a d C alkyl group.
- Reaction formula 5 shows that the carboxylic acid ester derivative represented by the general formula (II) can be prepared by reacting a carboxylic acid ester derivative of the general formula (II) in an ether solvent such as tetrahydrofuran or getyl ether in the presence of a base such as sodium hydride or sodium i-butoxide.
- a base such as sodium hydride or sodium i-butoxide.
- the carboxylic acid ester derivative represented by the general formula (III ′) is prepared by converting the corresponding carboxylic acid represented by the general formula (III) into R ⁇ H (R is C, to C ⁇ ,
- the reaction can be carried out with an alcohol represented by the formula (1) in the presence of a dehydrator such as sulfuric acid at room temperature to iS flow temperature of the mixture.
- Reaction formula 6
- R 3 , R 4 , R 5 , R 6 , X, Y, Z, and n are as defined in the formula (I), and R is (, ⁇ ⁇ : ⁇ > alkyl group. )
- the carboxylic acid derivative represented by the general formula (III) and the carboxylic acid ester derivative represented by the general formula ( ⁇ ) can be prepared by various methods (for example, WO 93/18031, WO 94/1431, W095 / 4054).
- Z is a group (a)
- R 7 is a C, ⁇ alkoxy group
- R 3 , RR 5 , RRX, Y and n are as defined in the general formula (I) or the general formula (lb), and Ha 1 represents a halogen atom.
- R 3 , R ⁇ R 5 , RR 7 , R ⁇ X, Y and n are as defined in the above general formula (I), and L is a halogen) II or ⁇ H3 ⁇ 4 Is a halogen atom.
- the thiophenol represented by the general formula (ci), which is a starting material, is obtained by a known method. (For example, “New Experimental Chemistry Course 14, Taisei and Reaction of Organic Compounds III 1 Page 704 8.1 Chapter 1 Synthetic Method via Thiol f. Dithiocarbonate” j Maruzen Co., Ltd., February 1986 Date).
- the thiochroman derivative represented by the general formula (cv) can be produced by using either the method (1) or the method (2). ⁇ culm m
- the thiochroman derivative represented by the general formula (cv) is obtained by converting the arylhalide represented by the general formula (cii) with thiophenol (ci) to acetone. 0 ° C to the reflux temperature of the solvent in an inert solvent such as dimethyl ether, dimethyl ether, dimethylformamide, etc. in the presence of a base such as anhydrous potassium carbonate, sodium hydroxide, potassium hydroxide, anhydrous sodium carbonate, and triethylamine.
- a base such as anhydrous potassium carbonate, sodium hydroxide, potassium hydroxide, anhydrous sodium carbonate, and triethylamine.
- the sulfide derivative is further converted to polyphosphoric acid, sulfuric acid, phosphorus pentoxide or an ion exchange resin (for example, Amberlist (trade name)) ) Is produced by reacting in the presence of
- R 4 is limited to a hydrogen atom.
- the thiochroman derivative represented by the general formula (cv) is composed of thiophenol (ci) and an aryl alcohol represented by the general formula (cii) Is condensed using an acid catalyst such as formic acid in one reaction operation.
- an acid catalyst such as formic acid in one reaction operation.
- Formic acid as an acid catalyst can also be used as a solvent, but a solvent may be used separately.
- the reaction temperature can be appropriately selected in the range of room temperature to the reflux temperature EB of the solvent.
- the thiochroman derivative represented by the general formula (cv) can be produced by condensing a thiophenol represented by the general formula (ci) with an alcohol represented by the general formula (civ) using a ⁇ catalyst such as formic acid. .
- a catalyst such as formic acid
- a solvent may be separately used.
- the solvent used is not particularly limited as long as it is a solvent inert to the reaction.
- the reaction temperature can be appropriately selected from the range of room temperature to the reflux temperature of the solvent.
- the thiochroman derivative represented by the general formula (cvi) can be added to a compound represented by the general formula (cv) in a solvent such as methylene chloride, chloroform, carbon tetrachloride or the like at a temperature ranging from 0 ° C to the reflux temperature of the solvent. , By reacting a halogenating reagent such as sulfuryl chloride or chlorine. Process (4)
- an ether-based solvent such as tetrahydrofuran or getyl ether
- an oxidizing agent such as hydrogen peroxide, peracetic acid, sodium periodate, m-chloroperbenzoic acid or the like is added to a solvent such as acetic acid, water, methanol, methylene chloride, etc. It can be manufactured by reacting at a temperature in the range of the flow temperature.
- the oxidizing agent is used.
- the reaction is preferably performed using two or more equivalents.
- the carboxylic acid (IIICH) in which the substituent Y is a hydrogen atom is, for example, an 8-U-chloro-thiochroman ⁇ UIIc ") iU: It can be produced by reduction using zinc powder in a solvent, and the reaction proceeds smoothly by adding an equivalent or more of a base such as sodium hydroxide or potassium hydroxide. This is described in detail in Japanese Patent Publication No.
- a phenylthiopropionic acid derivative represented by the general formula (dvii) is obtained by bonding a 3-halopropionic acid compound (dii) or an acrylic acid compound (diii) to a p-thiosalicylic acid derivative (di), Or p-Nitro benzoic acid derivative (div) or p-halo benzoic acid ⁇ 3 ⁇ 4 (dv) with 3-mercap A method of reacting a toprobionic acid compound (dvi).
- the obtained phenylthiopropionic acid derivative (dvii) is condensed and cyclized with a dehydrating agent such as polyphosphoric acid to give a carboxylic acid ester having n of 0 in the general formula (in'd).
- a dehydrating agent such as polyphosphoric acid
- the carboxylic acid in which Y is a hydrogen atom can be obtained by catalytic reduction hydrogenation of a carboxylic acid derivative in which Y is a chlorine atom, for example, in the presence of a catalyst under a stream of hydrogen gas.
- R 3 , RR 5 , R ⁇ R 1Q , X, Y and n are as defined in the above general formula (I) and general formula (lb), and R represents ( ⁇ to ( ⁇ alkyl group Show.)
- the thiochroman-4-thione derivative represented by the general formula (inel) can be obtained by converting the carboxylic acid represented by the general formula ( ⁇ d) into an inert solvent together with a sulfide agent such as diphosphorus pentasulfide and a monosodium reagent. Obtained by heating.
- the thiochroman-4,4-dialkoxy derivative represented by the general formula (III, e2) is obtained by converting the carboxylic acid ester represented by the general formula (III'd) into a Lewis acid such as p-toluenesulfonic acid and titanium tetrachloride. It can be obtained by heating in an inert solvent together with the corresponding alcohol in the presence of water. The reaction proceeds relatively easily when an alkylene diol such as ethylene glycol is used as the alcohol. In this case, the cyclic substituent is a form in which both alkyl substituents (R) in the general formula (Ile2) are bonded.
- the thiochroman-4-alkyl-4-alkoxy compound represented by the general formula (111, e3) is obtained by adding an alkyl magnesium halide (R-Mg-Hal) to a carboxylic acid ester represented by the general formula (ni'd). After reacting to obtain an intermediate 4-alkyl-14-hydroxy derivative, the compound is obtained by etherification using, for example, the method described in the reaction scheme of the above a).
- the carboxylic acid represented by the general formula (Illb) can be derived from the carboxylic acid represented by the general formula (Hid) by using a method similar to that described in the reaction scheme of the above b).
- the herbicide of the present invention contains, as an essential component, the isoxasol derivative of the present invention represented by the formula (I), and contains these compounds in a liquid carrier such as a solvent or a solid carrier such as a mineral powder. And can be used by formulating into wettable powders, emulsions, powders, granules and the like.
- a surfactant may be added to impart emulsification, dispersibility, spreadability and the like during formulation.
- the herbicide of the present invention When used in the form of a wettable powder, it is usually used in the form of 10-55 fi fi% of isoxazolyl, a solid carrier of 40-88% by weight, and a surfactant.
- the composition may be prepared by mixing the agents in an amount of 2 to 5% by weight and then used.
- the isoxazole derivative of the present invention When used in the form of an emulsion, is usually compounded in a proportion of 20 to 50% by weight, a solvent of 35 to 75% by weight and a surfactant of 5 to 15% by weight. It may be prepared.
- the isoxazole derivative of the present invention when used in the form of a powder, is usually blended at a ratio of 1 to 15% by weight, a solid carrier at 80 to 97% by weight, and a surfactant at 2 to 5 ffl%. do it. Further, when used in the form of granules, the isoxazole derivative of Honshu is blended at a ratio of 1 to 15%, a solid carrier 80 to 977, and a surfactant at 2 to 5% by mass. It may be prepared by adjusting. Here, fine powder of a mineral substance is used as the solid carrier.
- Examples of the fine powder of the mineral substance include oxides such as diatomaceous earth and slaked lime, phosphates such as apatite, sulfates such as Secco, talc, and pie.
- Examples include mouth ferrite, clay, kaolin, bentonite, acid clay, white carbon, quartz powder, and silicates such as silica stone powder.
- Organic solvents are used as the solvent. Specific examples include aromatic hydrocarbons such as benzene, toluene, and xylene; chlorinated hydrocarbons such as o-chlorotoluene, trichloroene, and trichloroethylene; and cyclohexanol.
- aromatic hydrocarbons such as benzene, toluene, and xylene
- chlorinated hydrocarbons such as o-chlorotoluene, trichloroene, and trichloroethylene
- cyclohexanol cyclohexanol.
- Alcohols such as amyl alcohol and ethylene glycol, ketones such as isophorone, cyclohexanone, cyclohexenyl-cyclohexanone, ethers such as butyl sesolve, getyl ether, methylethyl ether, isobrovir acetate, benzyl acetate, Esters such as methyl phthalate; amides such as dimethylformamide; and mixtures thereof.
- ketones such as isophorone, cyclohexanone, cyclohexenyl-cyclohexanone
- ethers such as butyl sesolve, getyl ether, methylethyl ether, isobrovir acetate, benzyl acetate
- Esters such as methyl phthalate
- amides such as dimethylformamide; and mixtures thereof.
- any of an anionic type, a nonionic type, a cationic type and a zwitterionic type (amino acid, bayone, etc.) can be used.
- the herbicide of the present invention can contain other herbicidal active ingredients as needed, together with the isoxazole derivative represented by the general formula U) as an active ingredient.
- examples of such other herbicidally active ingredients include conventionally known herbicides such as phenoxy, diphenyl ether, triazine, urea, carbamate, thiobamate, acid anilide, and the like. Pyrazole-based, phosphate-based, sulfonylprea-based, oxadiazone-based and the like can be used, and these herbicides can be appropriately selected and used.
- the herbicide of the present invention can be mixed with an insecticide, a fungicide, a plant growth regulator, a fertilizer, and the like, if necessary.
- a THF solution of 2.0 g of t-butyl 3-cyclopropyl-3-isobutyrobionate and 1.24 g of magnesium ethoxide was prepared and heated under reflux for 2 hours.
- a THF solution of the above carboxylic acid chloride was prepared and heated under reflux for 3 hours.
- THF was distilled off under reduced pressure, and ethyl acetate was added. After washing with a 5% aqueous hydrochloric acid solution and then with a saturated saline solution, the organic layer was dried over anhydrous sodium sulfate.
- (2- 1 1) Use 4- (2-fluoroethoxy) imino-1,5,8-dimethylthiochroman-1,1,1-dioxydoxy-6-carboxylic acid instead of the carboxylic acid obtained in (2-6) above. Except for the above, the reaction was carried out in the same manner as in the above (2-6) to obtain compound N0.V-11.
- Table 2 shows the structural formulas and NMR spectra of Compound Nos. VII-2 to VII-15 obtained in (3-1) to (3-15) above.
- reaction mixture was cooled to room temperature, water was gradually added, and a 5% aqueous hydrochloric acid solution was further added to adjust the pH to 1.
- reaction mixture was cooled to room temperature, water was gradually added, and a 5% aqueous hydrochloric acid solution was further added to adjust the pH to 1.
- Table 4 below shows the formulas of the compounds obtained in the above (4-1) to (4-117).
- the compounds obtained in the above (4-1) to (4-17) can be used without purification in the present invention.
- herbicide of the present invention will be described more specifically with reference to examples of herbicides and comparative examples of herbicides.
- Examples of herbicides and comparative examples of herbicides are described more specifically with reference to examples of herbicides and comparative examples of herbicides.
- talc trade name: G-Cryte
- alkyl aryl sulfonic acid as a surfactant
- Neoberex trade name: Neoberex, manufactured by Kao Atlas Co., Ltd.
- Surfactant trade name: Solpol 80 OA, manufactured by Toho Chemical Industry Co., Ltd.
- Aal Wagner pots filled with upland soil were seeded with weed seeds, corn and corn seeds of Sicily, Aoinyu, Dinosaur Asagao, Aogei Tou, Inuhozuki, Nobie, Mehishiba, and covered with soil.
- the given amount of the given herbicide obtained in the above (1) was suspended in water and uniformly decomposed on the soil surface. After that, the plants were grown in a greenhouse, and on the 20th day after the treatment, the herbicidal effect and phytotoxicity to the crops were determined. Table 7 shows the results.
- a. Active ingredient (abbreviation of active ingredient) According to the results in Table 7, the herbicide of the present invention does not cause harm to corn and corn and selectively treats a wide range of field weeds at a low dose. It was confirmed that it could be controlled. On the other hand, it can be seen that the comparative example compound (A) is inferior in safety to the sun.
- a novel isoxazole derivative and a novel isoxazole derivative capable of selectively controlling a wide range of field weeds such as grasses and broadleaf weeds without causing phytotoxicity to useful crops such as corn, cotton, wheat, barley and the like.
- a herbicide containing as an active ingredient a wide range of field weeds such as grasses and broadleaf weeds without causing phytotoxicity to useful crops such as corn, cotton, wheat, barley and the like.
- a herbicide containing as an active ingredient a herbicide containing as an active ingredient.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dentistry (AREA)
- Wood Science & Technology (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- General Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019970705632A KR19980702235A (ko) | 1995-02-15 | 1996-02-13 | 이속사졸 유도체 |
EP96901987A EP0810227A4 (en) | 1995-02-15 | 1996-02-13 | ISOXAZOLE DERIVATIVES |
AU46340/96A AU4634096A (en) | 1995-02-15 | 1996-02-13 | Isoxazole derivatives |
BR9607396A BR9607396A (pt) | 1995-02-15 | 1996-02-13 | Derivados de isoxazola |
EA199700177A EA199700177A1 (ru) | 1995-02-15 | 1997-09-12 | Производные изоксазола, гербицид |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7/26427 | 1995-02-15 | ||
JP2642795 | 1995-02-15 | ||
JP28189395 | 1995-10-30 | ||
JP7/281893 | 1995-10-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996025413A1 true WO1996025413A1 (en) | 1996-08-22 |
Family
ID=26364212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/000299 WO1996025413A1 (en) | 1995-02-15 | 1996-02-13 | Isoxazole derivatives |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0810227A4 (ja) |
KR (1) | KR19980702235A (ja) |
CN (1) | CN1181756A (ja) |
AR (1) | AR000950A1 (ja) |
AU (1) | AU4634096A (ja) |
BR (1) | BR9607396A (ja) |
CA (1) | CA2213078A1 (ja) |
EA (1) | EA199700177A1 (ja) |
WO (1) | WO1996025413A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997012885A1 (fr) * | 1995-10-04 | 1997-04-10 | Idemitsu Kosan Co., Ltd. | Derives de pyrazole |
WO1997038988A1 (de) * | 1996-04-16 | 1997-10-23 | Basf Aktiengesellschaft | Herbizide heterocyclisch anellierte benzoylisothiazole |
WO1997044340A1 (fr) * | 1996-05-23 | 1997-11-27 | Idemitsu Kosan Co., Ltd. | Derives d'isoxazole |
EP0918056A1 (en) * | 1997-11-20 | 1999-05-26 | Rhone-Poulenc Agriculture Ltd. | Herbicides |
WO2000014087A1 (de) * | 1998-09-04 | 2000-03-16 | Aventis Cropscience Gmbh | Benzoylderivate, verfahren zu ihrer herstellung und ihre verwendung als herbizide und pflanzenwachstumsregulatoren |
JP2002518416A (ja) * | 1998-06-23 | 2002-06-25 | アベンティス・クロップサイエンス・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | 除草剤と毒性緩和剤の結合 |
WO2012123409A1 (de) | 2011-03-15 | 2012-09-20 | Bayer Cropscience Ag | N-(1,2,5-oxadiazol-3-yl)-, n-(tetrazol-5-yl)- und n-(triazol-5-yl)bicycloaryl-carbonsäureamide und ihre verwendung als herbizide |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19950943A1 (de) | 1999-10-22 | 2001-05-17 | Aventis Cropscience Gmbh | Synergistische herbizide Mittel enthaltend Herbizide aus der Gruppe der Hemmstoffe der Hydroxyphenylpyruvat-Dioxygenase |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0636622A1 (en) * | 1993-07-30 | 1995-02-01 | Rhone Poulenc Agriculture Ltd. | Isoxazole derivatives and their use as herbicides |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL85659A (en) * | 1987-03-17 | 1992-03-29 | Nissan Chemical Ind Ltd | 4-benzoylpyrazole derivatives,method for their preparation and herbicidal compositions containing them |
GB8920519D0 (en) * | 1989-09-11 | 1989-10-25 | Rhone Poulenc Ltd | New compositions of matter |
DE69325018T2 (de) * | 1992-03-03 | 1999-09-16 | Idemitsu Kosan Co | Pyrazolderivate |
HRP930105A2 (en) * | 1992-03-12 | 1996-04-30 | Rhone Poulenc Agriculture | New herbicides |
JP3210670B2 (ja) * | 1992-07-13 | 2001-09-17 | 出光興産株式会社 | ピラゾール誘導体 |
GB9302049D0 (en) * | 1993-02-03 | 1993-03-24 | Rhone Poulenc Agriculture | Compositions of new matter |
GB9302071D0 (en) * | 1993-02-03 | 1993-03-24 | Rhone Poulenc Agriculture | Compositions of matter |
RU2133747C1 (ru) * | 1993-08-02 | 1999-07-27 | Идемицу Козан Компани Лимитед | Производные пиразола или их соли, гербицид, их содержащий, и производные ароматической карбоновой кислоты или их соли |
-
1996
- 1996-02-13 CA CA002213078A patent/CA2213078A1/en not_active Abandoned
- 1996-02-13 BR BR9607396A patent/BR9607396A/pt not_active Application Discontinuation
- 1996-02-13 WO PCT/JP1996/000299 patent/WO1996025413A1/ja not_active Application Discontinuation
- 1996-02-13 CN CN96193311A patent/CN1181756A/zh active Pending
- 1996-02-13 AU AU46340/96A patent/AU4634096A/en not_active Abandoned
- 1996-02-13 EP EP96901987A patent/EP0810227A4/en not_active Withdrawn
- 1996-02-13 KR KR1019970705632A patent/KR19980702235A/ko not_active Application Discontinuation
- 1996-02-14 AR ARP960101376A patent/AR000950A1/es unknown
-
1997
- 1997-09-12 EA EA199700177A patent/EA199700177A1/ru unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0636622A1 (en) * | 1993-07-30 | 1995-02-01 | Rhone Poulenc Agriculture Ltd. | Isoxazole derivatives and their use as herbicides |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997012885A1 (fr) * | 1995-10-04 | 1997-04-10 | Idemitsu Kosan Co., Ltd. | Derives de pyrazole |
US6159904A (en) * | 1995-10-04 | 2000-12-12 | Idemitsu Kosan Co., Ltd. | Pyrazole derivatives |
WO1997038988A1 (de) * | 1996-04-16 | 1997-10-23 | Basf Aktiengesellschaft | Herbizide heterocyclisch anellierte benzoylisothiazole |
US5945381A (en) * | 1996-04-16 | 1999-08-31 | Basf Aktiengesellschaft | Herbicidal heterocyclically annulated benzoylisothiazoles |
WO1997044340A1 (fr) * | 1996-05-23 | 1997-11-27 | Idemitsu Kosan Co., Ltd. | Derives d'isoxazole |
US6037312A (en) * | 1996-05-23 | 2000-03-14 | Idemitsu Kosan Co., Ltd. | Isoxazole derivatives |
EP0918056A1 (en) * | 1997-11-20 | 1999-05-26 | Rhone-Poulenc Agriculture Ltd. | Herbicides |
JP2002518416A (ja) * | 1998-06-23 | 2002-06-25 | アベンティス・クロップサイエンス・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | 除草剤と毒性緩和剤の結合 |
JP4653307B2 (ja) * | 1998-06-23 | 2011-03-16 | バイエル・クロツプサイエンス・アクチエンゲゼルシヤフト | 除草剤と毒性緩和剤の結合 |
WO2000014087A1 (de) * | 1998-09-04 | 2000-03-16 | Aventis Cropscience Gmbh | Benzoylderivate, verfahren zu ihrer herstellung und ihre verwendung als herbizide und pflanzenwachstumsregulatoren |
US6297196B1 (en) | 1998-09-04 | 2001-10-02 | Hoechst Schering Agrevo Gmbh | Benzoyl derivatives, process for their preparation and their use as herbicides and plant growth regulators |
WO2012123409A1 (de) | 2011-03-15 | 2012-09-20 | Bayer Cropscience Ag | N-(1,2,5-oxadiazol-3-yl)-, n-(tetrazol-5-yl)- und n-(triazol-5-yl)bicycloaryl-carbonsäureamide und ihre verwendung als herbizide |
Also Published As
Publication number | Publication date |
---|---|
AU4634096A (en) | 1996-09-04 |
CA2213078A1 (en) | 1996-08-22 |
KR19980702235A (ko) | 1998-07-15 |
CN1181756A (zh) | 1998-05-13 |
EP0810227A1 (en) | 1997-12-03 |
EA199700177A1 (ru) | 1997-12-30 |
EP0810227A4 (en) | 1998-05-13 |
AR000950A1 (es) | 1997-08-27 |
BR9607396A (pt) | 1998-06-30 |
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