CN110483491B - Isoxazoline derivatives and their use in agriculture - Google Patents

Abstract

The invention provides isoxazoline derivatives and their use in agriculture; specifically, the invention provides a compound shown in a formula (I) or a stereoisomer, a nitrogen oxide and a salt of the compound shown in the formula (I), and a preparation method thereof; wherein R is¹、R²、R³、R⁴、n、m、R⁵、R⁶、X、Y、R⁷And R⁸Have the meaning as described in the present invention. The invention further provides compositions containing these compounds and their use in agriculture, in particular as herbicidal active ingredients for controlling unwanted vegetation.

Description

Isoxazoline derivatives and their use in agriculture

Technical Field

The invention provides a novel isoxazoline derivative and a preparation method thereof; compositions containing these compounds and their use in agriculture.

Background

Isoxazolines are a class of compounds with excellent biological activity, and their herbicidal activity is reported in, for example, WO2002062770, WO2003000686 patents. However, the compounds of the present invention described in detail hereinafter are not described in these documents. To achieve control of weed growth, there is a continuing need for new compounds that are more effective, more economical, less toxic, environmentally safer, or have different sites of action.

Disclosure of Invention

The isoxazoline compound with the weeding activity provided by the invention has good weeding activity on broadleaf weeds and gramineous weeds.

In one aspect, the present invention provides compounds of formula (I), stereoisomers, nitroxides and salts of compounds of formula (I):

wherein:

R¹and R²Each independently is hydrogen, fluorine, chlorine, bromine, iodine, amino, nitro, cyano, hydroxy, carboxyBase, C_1-6Alkyl radical, C_3-6Cycloalkyl or C_3-6Cycloalkyl radical C_1-6An alkyl group; or R¹、R²And the carbon atoms to which they are attached form a ring consisting of 3 to 8 atoms;

R³and R⁴Each independently is hydrogen, fluorine, chlorine, bromine, iodine, amino, nitro, cyano, hydroxyl, carboxyl, C_1-6Alkyl radical, C_3-6Cycloalkyl or C_3-6Cycloalkyl radical C_1-6An alkyl group; or R³、R⁴And the carbon atoms to which they are attached form a ring consisting of 3 to 8 atoms;

n is 0, 1 or 2;

m is 0, 1,2 or 3;

R⁵and R⁶Each independently is hydrogen, fluorine, chlorine, bromine, iodine, amino, nitro, cyano, hydroxyl, carboxyl, C_1-6Alkyl radical, C_2-6Alkenyl or C_2-6An alkynyl group; or R⁵、R⁶And the carbon atoms to which they are attached form a ring consisting of 3 to 8 atoms;

x and Y are each independently CH or N;

R⁷is C_1-6Alkyl radical, C_3-8Cycloalkyl radical, C_2-12Heterocyclic group, C_6-10Aryl radical, C_1-9Heteroaryl group, C_3-8Cycloalkyl radical C_1-6Alkyl radical, C_2-12Heterocyclyl radical C_1-6Alkyl radical, C_6-10Aryl radical C_1-6Alkyl or C_1-9Heteroaryl C_1-6An alkyl group;

R⁸is C_1-8Alkyl radical, C_2-8Alkenyl radical, C_2-8Alkynyl, C_3-8Cycloalkyl radical, C_2-12Heterocyclic group, C_6-10Aryl or C_1-9A heteroaryl group;

R⁷and R⁸Each independently optionally substituted by 1,2,3,4, 5 or 6 substituents selected from fluoro, chloro, bromo, iodo, hydroxy, cyano, nitro, amino, carboxy, oxo (═ O), C_1-6Alkyl radical, C_2-6Alkenyl radical, C_2-6Alkynyl, halo C_1-6Alkyl, halo C_2-6Alkenyl, halo C_2-6Alkynyl, hydroxy-substituted C_1-6Alkyl, amino substituted C_1-6Alkyl, cyano-substituted C_1-6Alkyl radical, C_1-6Alkoxy, halo C_1-6Alkoxy, hydroxy-substituted C_1-6Alkoxy, amino substituted C_1-6Alkoxy, cyano-substituted C_1-6Alkoxy radical, C_1-6Alkylamino radical, C_3-8Cycloalkyl radical, C_6-10Aryl radical, C_1-9Heteroaryl group, C_6-10Aryloxy radical or C_1-9Substituted by a substituent of heteroaryloxy.

In some of these embodiments, R¹And R²Each independently is hydrogen, fluorine, chlorine, bromine, iodine, amino, nitro, cyano, hydroxyl, carboxyl, C_1-4Alkyl radical, C_3-6Cycloalkyl or C_3-6Cycloalkyl radical C_1-3An alkyl group; or R¹、R²And together with the carbon atoms to which they are attached form a ring consisting of 3 to 6 atoms.

In some of these embodiments, R³And R⁴Each independently is hydrogen, fluorine, chlorine, bromine, iodine, amino, nitro, cyano, hydroxyl, carboxyl, C_1-3Alkyl radical, C_3-6Cycloalkyl or C_3-6Cycloalkyl radical C_1-3An alkyl group; or R³、R⁴And together with the carbon atoms to which they are attached form a ring consisting of 3 to 6 atoms.

In some of these embodiments, R⁵And R⁶Each independently is hydrogen, fluorine, chlorine, bromine, iodine, amino, nitro, cyano, hydroxyl, carboxyl, C_1-3Alkyl radical, C_2-3Alkenyl or C_2-3An alkynyl group; or R⁵、R⁶And together with the carbon atoms to which they are attached form a ring consisting of 3 to 6 atoms.

In some of these embodiments, the present invention provides a compound that is a compound of formula (II) or a stereoisomer, nitroxide, or salt of a compound of formula (II):

x, Y, R therein⁷And R⁸Have the meaning as described in the present invention.

In other embodiments, R⁷Is C_1-4Alkyl radical, C_3-6Cycloalkyl radical, C_2-6Heterocyclic group, C_6-10Aryl radical, C_1-5Heteroaryl group, C_3-6Cycloalkyl radical C_1-3Alkyl radical, C_2-6Heterocyclyl radical C_1-3Alkyl radical, C_6-10Aryl radical C_1-3Alkyl or C_1-5Heteroaryl C_1-3An alkyl group.

In other embodiments, R⁸Is C_1-5Alkyl radical, C_2-4Alkenyl radical, C_2-4Alkynyl, C_3-6Cycloalkyl radical, C_2-6Heterocyclic group, C_6-10Aryl or C_1-5A heteroaryl group.

In other embodiments, R⁷And R⁸Each independently optionally substituted by 1,2,3,4, 5 or 6 substituents selected from fluoro, chloro, bromo, iodo, hydroxy, cyano, nitro, amino, carboxy, oxo (═ O), C_1-4Alkyl radical, C_2-4Alkenyl radical, C_2-4Alkynyl, halo C_1-4Alkyl, halo C_2-4Alkenyl, halo C_2-4Alkynyl, hydroxy-substituted C_1-4Alkyl, amino substituted C_1-4Alkyl, cyano-substituted C_1-4Alkyl radical, C_1-4Alkoxy, halo C_1-4Alkoxy, hydroxy-substituted C_1-4Alkoxy, amino substituted C_1-4Alkoxy, cyano-substituted C_1-4Alkoxy radical, C_1-4Alkylamino radical, C_3-6Cycloalkyl radical, C_6-10Aryl radical, C_1-5Heteroaryl group, C_6-10Aryloxy radical or C_1-5Substituted by a substituent of heteroaryloxy.

In other embodiments, R⁷And R⁸Each independently optionally substituted by 1,2,3,4, 5 or 6 substituents selected from fluoro, chloro, bromo, iodo, hydroxy, cyano, nitro, amino, carboxy, oxo (═ O), C_1-3Alkyl radical, C_2-3Alkenyl or C_2-3And a substituent of the alkynyl group.

In other embodiments, R⁷Is methyl, ethyl, n-propyl, isopropyl, phenyl, benzyl, cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl; r⁷Optionally substituted with 1,2,3,4, 5 or 6 substituents selected from fluoro, chloro, bromo, iodo, hydroxy, cyano, nitro, amino, carboxy, methyl or ethyl.

In other embodiments, R⁸Is methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, vinyl, propenyl, allyl, cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl.

In another aspect, the present invention provides a compound that is a compound having one of the following structures or a stereoisomer, a nitroxide, and a salt of the compound having one of the following structures:

in another aspect, the present invention provides a composition comprising a compound of the present invention as an active ingredient.

In some of these embodiments, the present invention provides a composition comprising a compound of the present invention, further comprising at least one additional component that acts as a carrier. Wherein the additional component is a surfactant, a solid diluent, or a liquid diluent.

In some of these embodiments, the compositions of the present invention comprise at least one additional pesticidally active substance selected from the group consisting of insecticides, acaricides, herbicides, fungicides, safeners and growth regulators.

In another aspect, the invention provides the use of a composition comprising a compound of the invention in agriculture.

In another aspect, the present invention provides the use of a composition comprising a compound of the present invention for the control of plant diseases.

In some of these embodiments, the present invention provides the use of a composition comprising a compound of the present invention as a herbicide.

In some of these embodiments, the present invention provides the use of a composition comprising a compound of the present invention as a fungicide.

In some of these embodiments, the present invention provides the use of a composition comprising a compound of the present invention as a pesticide.

In some of these embodiments, the present invention provides the use of compositions comprising the compounds described herein for controlling unwanted vegetation.

In another aspect, the present invention provides a method for controlling undesired vegetation, characterized in that an effective amount of a compound according to the invention is applied to the plants, to the plant seeds, to the soil in or on which the plants are grown, or to the cultivation area.

The compounds of formula (I) may exist in different stereoisomers or optical isomers or tautomeric forms. The invention encompasses all such isomers and tautomers and mixtures thereof in various ratios, as well as isotopic forms such as heavy hydrogen-containing compounds.

Isotopically enriched compounds have the structure depicted by the formulae given herein, except that one or more atoms are replaced by an atom having a selected atomic mass or mass number. Exemplary isotopes that can be incorporated into compounds of the invention include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur, fluorine and chlorine, such as²H，³H，¹¹C，¹³C，¹⁴C，¹⁵N，¹⁷O，¹⁸O，¹⁸F，³¹P，³²P，³⁵S，³⁶Cl and¹²⁵I。

any asymmetric atom (e.g., carbon, etc.) of a compound disclosed herein can exist in racemic or enantiomerically enriched forms, such as the (R) -, (S) -or (R, S) -configuration.

The foregoing has outlined only certain aspects of the present invention and is not intended to be limited in these or other respects to the details described herein.

Detailed description of the invention

Definitions and general terms

Reference will now be made in detail to certain embodiments of the invention, examples of which are illustrated by the accompanying structural and chemical formulas. The invention is intended to cover alternatives, modifications and equivalents, which may be included within the scope of the invention as defined by the appended claims. One skilled in the art will recognize that many methods and materials similar or equivalent to those described herein can be used in the practice of the present invention. The present invention is in no way limited to the methods and materials described herein. In the event that one or more of the incorporated documents, patents, and similar materials differ or contradict this application (including but not limited to defined terminology, application of terminology, described techniques, and the like), this application controls.

It will be further appreciated that certain features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable subcombination.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. All patents and publications referred to herein are incorporated by reference in their entirety.

The following definitions, as used herein, should be applied unless otherwise indicated. For the purposes of the present invention, the chemical elements are in accordance with the CAS version of the periodic Table of the elements, and the handbook of chemistry and Physics, 75 th edition, 1994. In addition, general principles of Organic Chemistry can be found in the descriptions of "Organic Chemistry", Thomas Sorrell, University Science Books, Sausaltito: 1999, and "March's Advanced Organic Chemistry" by Michael B.Smith and JerryMarch, John Wiley & Sons, New York:2007, the entire contents of which are incorporated herein by reference.

The articles "a," "an," and "the" as used herein are intended to include "at least one" or "one or more" unless otherwise indicated or clearly contradicted by context. Thus, as used herein, the articles refer to articles of one or more than one (i.e., at least one) object. For example, "a component" refers to one or more components, i.e., there may be more than one component contemplated for use or use in embodiments of the described embodiments.

The term "comprising" is open-ended, i.e. includes the elements indicated in the present invention, but does not exclude other elements.

"stereoisomers" refers to compounds having the same chemical structure but differing in the arrangement of atoms or groups in space. Stereoisomers include enantiomers, diastereomers, conformers (rotamers), geometric isomers (cis/trans), atropisomers, and the like.

"enantiomer" refers to two isomers of a compound that are not overlapping but are in mirror image relationship to each other.

"diastereomer" refers to a stereoisomer that has two or more chiral neutrals and whose molecules are not mirror images of each other. Diastereomers have different physical properties, such as melting points, boiling points, spectral properties, and reactivities. Mixtures of diastereomers may be separated by high resolution analytical procedures such as electrophoresis and chromatography, e.g., HPLC.

The stereochemical definitions and rules used in the present invention generally follow the general definitions of S.P. Parker, Ed., McGraw-Hilldictionary of Chemical Terms (1984) McGraw-Hill Book Company, New York; and Eliel, E.and Wilen, S., "Stereochemistry of Organic Compounds", John Wiley & Sons, Inc., New York, 1994.

Many organic compounds exist in an optically active form, i.e., they have the ability to rotate the plane of plane polarized light. In describing optically active compounds, the prefixes D and L or R and S are used to denote the absolute configuration of a molecule with respect to one or more of its chiral centers. The prefixes d and l or (+) and (-) are the symbols used to specify the rotation of plane polarized light by the compound, where (-) or l indicates that the compound is left-handed. Compounds prefixed with (+) or d are dextrorotatory. A particular stereoisomer is an enantiomer and a mixture of such isomers is referred to as an enantiomeric mixture. A50: 50 mixture of enantiomers is referred to as a racemic mixture or racemate, which may occur when there is no stereoselectivity or stereospecificity in the chemical reaction or process.

The compounds of the invention may be optionally substituted with one or more substituents, as described herein, in compounds of the general formula above, or as specifically exemplified, sub-classes, and classes of compounds encompassed by the invention. It is understood that the term "optionally substituted" may be used interchangeably with the term "substituted or unsubstituted". In general, the term "substituted" means that one or more hydrogen atoms in a given structure are replaced with a particular substituent. Unless otherwise indicated, an optional substituent group may be substituted at each substitutable position of the group. When more than one position in a given formula can be substituted with one or more substituents selected from a particular group, the substituents may be substituted at each position, identically or differently. Wherein said substituent may be, but is not limited to, deuterium, fluorine, chlorine, bromine, iodine, cyano, hydroxyl, nitro, amino, carboxyl, alkyl, alkoxy, alkoxyalkyl, alkoxyalkoxy, alkoxyalkylamino, aryloxy, heteroaryloxy, heterocyclyloxy, arylalkoxy, heteroarylalkoxy, heterocyclylalkoxy, cycloalkylalkoxy, alkylamino, alkylaminoalkyl, alkylaminoalkylamino, cycloalkylamino, cycloalkylalkylamino, alkylthio, haloalkyl, haloalkoxy, hydroxyl-substituted alkyl, hydroxyl-substituted alkylamino, cyano-substituted alkyl, cyano-substituted alkoxy, cyano-substituted alkylamino, amino-substituted alkyl, alkanoyl, heteroalkyl, cycloalkyl, cycloalkenyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, arylalkyl, arylamino, heteroaryl, heteroarylalkyl, heteroarylamino, amido, sulfonyl, aminosulfonyl, and the like.

In addition, unless otherwise explicitly indicated, the descriptions of the terms "… independently" and "… independently" and "… independently" used in the present invention are interchangeable and should be understood in a broad sense to mean that the specific items expressed between the same symbols do not affect each other in different groups or that the specific items expressed between the same symbols in the same groups do not affect each other.

In the various parts of this specification, substituents of the disclosed compounds are disclosed in terms of group type or range. It is specifically intended that the invention includes each and every independent subcombination of the various members of these groups and ranges. For example, the term "C₁-C₆Alkyl "or" C_1-6Alkyl "means in particular independently disclosed methyl, ethyl, C₃Alkyl radical, C₄Alkyl radical, C₅Alkyl and C₆An alkyl group.

The term "alkyl" or "alkyl group" as used herein, denotes a saturated, straight or branched chain, monovalent hydrocarbon group containing from 1 to 20 carbon atoms; wherein the alkyl group is optionally substituted with one or more substituents described herein. Unless otherwise specified, alkyl groups contain 1-20 carbon atoms. In one embodiment, the alkyl group contains 1 to 12 carbon atoms; in one embodiment, the alkyl group contains 1 to 8 carbon atoms; in another embodiment, the alkyl group contains 1 to 6 carbon atoms; in yet another embodiment, the alkyl group contains 1 to 4 carbon atoms; in yet another embodiment, the alkyl group contains 1 to 3 carbon atoms.

Examples of alkyl groups include, but are not limited to, methyl (Me, -CH)₃) Ethyl group (Et, -CH)₂CH₃) N-propyl (n-Pr, -CH)₂CH₂CH₃) Isopropyl group (i-Pr, -CH (CH)₃)₂) N-butyl (n-Bu, -CH)₂CH₂CH₂CH₃) Isobutyl (i-Bu, -CH)₂CH(CH₃)₂) Sec-butyl (s-Bu, -CH (CH)₃)CH₂CH₃) Tert-butyl (t-Bu, -C (CH)₃)₃) N-pentyl (-CH)₂CH₂CH₂CH₂CH₃) 2-pentyl (-CH (CH)₃)CH₂CH₂CH₃) 3-pentyl (-CH (CH)₂CH₃)₂) 2-methyl-2-butyl (-C (CH)₃)₂CH₂CH₃) 3-methyl-2-butyl (-CH (CH)₃)CH(CH₃)₂) 3-methyl-1-butyl (-CH)₂CH₂CH(CH₃)₂) 2-methyl-1-butyl (-CH)₂CH(CH₃)CH₂CH₃) And so on.

The term "alkenyl" denotes a straight or branched chain monovalent hydrocarbon radical containing 2 to 12 carbon atoms, wherein there is at least one site of unsaturation, i.e. one carbon-carbon sp²A double bond, wherein the alkenyl group may be optionally substituted with one or more substituents described herein, including the positioning of "cis" and "tans", or the positioning of "E" and "Z". In one embodiment, the alkenyl group contains 2 to 8 carbon atoms; in another embodiment, the alkenyl group contains 2 to 6 carbon atoms; in yet another embodiment, the alkenyl group contains 2 to 4 carbon atoms. Examples of alkenyl groups include, but are not limited to, vinyl (-CH ═ CH)₂) Allyl (-CH)₂CH＝CH₂) Allyl (CH)₃-CH ═ CH-), oxo butenyl (CH)₃-C (═ O) -CH ═ CH-) and the like.

The term "alkynyl" denotes a straight or branched chain monovalent hydrocarbon radical containing 2 to 12 carbon atoms, wherein there is at least one carbon-carbon sp triple bond.

The term "alkoxy" means an alkyl group attached to the rest of the molecule through an oxygen atom, wherein the alkyl group has the meaning as described herein. Examples of alkoxy groups include, but are not limited to, methoxy (MeO, -OCH)₃) Ethoxy (EtO, -OCH)₂CH₃) 1-propoxy (n-PrO, n-propoxy, -OCH)₂CH₂CH₃) 2-propoxy (i-PrO, i-propoxy, -OCH (CH)₃)₂) And so on.

The term "alkylamino" or "alkylamino" includes "N-alkylamino" and "N, N-dialkylamino" wherein the amino group isEach group is independently substituted with one or two alkyl groups. In some of these embodiments, the alkylamino group is one or two C_1-6Lower alkylamino groups in which the alkyl group is attached to the nitrogen atom. In other embodiments, the alkylamino group is C_1-3Lower alkylamino groups of (a). Suitable alkylamino groups can be monoalkylamino or dialkylamino, and such examples include, but are not limited to, N-methylamino, N-ethylamino, N-dimethylamino, N-diethylamino, and the like.

The term "halogen" refers to fluorine (F), chlorine (Cl), bromine (Br) or iodine (I).

The term "haloalkyl" denotes an alkyl group substituted with one or more halogen atoms. Examples of haloalkyl include, but are not limited to, -CH₂F，-CHF₂，-CH₂Cl，-CH₂Br，-CF₃，-CH₂CF₃，-CH₂CH₂F，-CH₂CH₂Cl，-CH₂CH₂Br，-CH₂CHF₂，-CH₂CH₂CF₃，-CH₂CH₂CH₂F，-CH₂CH₂CH₂Cl，-CH₂CH₂CH₂Br，-CHFCH₂CH₃，-CHClCH₂CH₃And so on.

The term "haloalkenyl" denotes an alkenyl group substituted with one or more halogen atoms.

The term "haloalkynyl" denotes an alkynyl group substituted by one or more halogen atoms.

The term "haloalkoxy" denotes an alkoxy group substituted with one or more halogen atoms. Examples of haloalkoxy include, but are not limited to, -OCH₂F，-OCHF₂，-OCH₂Cl，-OCH₂Br，-OCF₃，-OCH₂CF₃，-OCH₂CH₂F，-OCH₂CH₂Cl，-OCH₂CH₂Br，-OCH₂CHF₂，-OCH₂CH₂CF₃，-OCH₂CH₂CH₂F，-OCH₂CH₂CH₂Cl，-OCH₂CH₂CH₂Br，-OCHFCH₂CH₃，-OCHClCH₂CH₃And so on.

The term "cycloalkyl" denotes a monovalent or polyvalent saturated monocyclic, bicyclic or tricyclic ring system containing from 3 to 12 carbon atoms. In one embodiment, the cycloalkyl group contains 3 to 10 carbon atoms; in another embodiment, cycloalkyl contains 3 to 8 carbon atoms; in yet another embodiment, the cycloalkyl group contains 3 to 6 carbon atoms. The cycloalkyl group is optionally substituted with one or more substituents described herein. Examples include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl, cyclodecyl, cycloundecyl, cyclododecyl, and the like.

The term "cycloalkylalkyl" denotes an alkyl group substituted by one or more cycloalkyl groups, wherein the alkyl group and the cycloalkyl group have the meaning as described herein.

The terms "heterocyclyl" and "heterocycle" are used interchangeably herein and refer to a saturated or partially unsaturated monocyclic, bicyclic, or tricyclic ring containing 3 to 15 ring atoms, wherein no aromatic ring is included in the monocyclic, bicyclic, or tricyclic ring, and at least one ring atom is selected from the group consisting of nitrogen, sulfur, and oxygen atoms. Unless otherwise specified, heterocyclyl may be carbon-or nitrogen-based, and-CH₂-the group may optionally be replaced by-C (═ O) -. The sulfur atom of the ring may optionally be oxidized to the S-oxide. The nitrogen atom of the ring may optionally be oxidized to an N-oxygen compound. Examples of heterocyclyl groups include, but are not limited to, oxiranyl, azetidinyl, oxetanyl, thietanyl, pyrrolidinyl (e.g., 2-pyrrolidinyl), 2-pyrrolinyl, 3-pyrrolinyl, pyrazolidinyl, imidazolinyl, imidazolidinyl, tetrahydrofuranyl, dihydrofuranyl, tetrahydrothienyl, dihydrothienyl, 1, 3-dioxocyclopentyl, dithiocyclopentyl, tetrahydropyranyl, dihydropyranyl, 2H-pyranyl, 4H-pyranyl, tetrahydrothiopyranyl, piperidinyl (2-piperidinyl, 3-piperidinyl, 4-piperidinyl), morpholinyl, thiomorpholinyl, (1-oxo) -thiomorpholinyl, (1,1-dioxo) -thiomorpholinyl, piperazinyl, dioxanyl, dithianyl, thialkyl, homopiperazinyl, homopiperidinyl, oxepanyl, thiepanyl, 2-oxa-5-azabicyclo [2.2.1]Hept-5-yl, tetrahydropyridinyl. In heterocyclic radicals of-CH₂Examples of-groups substituted by-C (═ O) -include, but are not limited to, 2-oxopyrrolidinyl, oxo-1, 3-thiazolidinyl, 2-piperidinonyl, 3, 5-dioxopiperidinyl. Examples of sulfur atoms in heterocyclic groups that are oxidized include, but are not limited to, sulfolane, 1, 1-dioxothiomorpholinyl. The heterocyclyl group is optionally substituted with one or more substituents described herein.

The term "heterocyclylalkyl" refers to an alkyl group substituted with one or more heterocyclyl groups; wherein heterocyclyl and alkyl groups have the meaning as indicated in the present invention.

The term "x-atomic," where x is an integer, typically describes the number of ring-forming atoms in a molecule in which the number of ring-forming atoms is x. For example, piperidinyl is a heterocyclic group consisting of 6 atoms.

The term "unsaturated" as used herein means that the group contains one or more unsaturations.

The term "heteroatom" refers to O, S, N, P and Si, including N, S and any oxidation state form of P; primary, secondary, tertiary amines and quaternary ammonium salt forms; or a form in which a hydrogen on a nitrogen atom in the heterocycle is substituted, for example, N (like N in 3, 4-dihydro-2H-pyrrolyl), NH (like NH in pyrrolidinyl) or NR (like NR in N-substituted pyrrolidinyl).

The term "aryl" denotes monocyclic, bicyclic and tricyclic carbon ring systems containing 6 to 14 ring atoms, or 6 to 12 ring atoms, or 6 to 10 ring atoms, wherein at least one ring system is aromatic, wherein each ring system comprises a ring of 3 to 7 atoms with one or more attachment points to the rest of the molecule. The term "aryl" may be used interchangeably with the term "aromatic ring". Examples of the aryl group may include phenyl, indenyl, naphthyl and anthryl. The aryl group is optionally substituted with one or more substituents described herein.

The term "arylalkyl" or "aralkyl" means that an alkyl group is substituted with one or more aryl groups, wherein the alkyl and aryl groups have the meanings as described herein.

The term "aryloxy" or "aryloxy" includes optionally substituted aryl groups, as defined herein, attached to and linked from an oxygen atom to the rest of the molecule, wherein the aryl group has the meaning as described herein.

The term "heteroaryl" denotes monocyclic, bicyclic and tricyclic ring systems containing 5 to 12 ring atoms, or 5 to 10 ring atoms, or 5 to 6 ring atoms, wherein at least one ring system is aromatic and at least one ring system contains one or more heteroatoms, wherein each ring system contains a ring of 5 to 7 atoms with one or more attachment points to the rest of the molecule. The term "heteroaryl" may be used interchangeably with the terms "heteroaromatic ring" or "heteroaromatic compound". The heteroaryl group is optionally substituted with one or more substituents described herein.

In one embodiment, a heteroaryl group of 5-10 atoms contains 1,2,3, or 4 heteroatoms independently selected from O, S, and N.

In another embodiment, the ring atoms of the heteroaryl group comprise 1 to 9 carbon atoms and 1 to 4 heteroatoms selected from N, O or S; in another embodiment, the ring atoms of the heteroaryl group comprise 1 to 5 carbon atoms and 1 to 4 heteroatoms selected from N, O or S.

In yet another embodiment, heteroaryl represents a 5-or 6-membered heteroaryl group containing 1-4N heteroatoms; in yet another embodiment, heteroaryl represents a 5 membered heteroaryl group containing 1-3 heteroatoms selected from N, O or S; in yet another embodiment, heteroaryl represents a 5 membered heteroaryl group containing 1-3 heteroatoms selected from N or O; in yet another embodiment, heteroaryl represents a 5 membered heteroaryl group containing 1-3 heteroatoms selected from N or S.

Examples of heteroaryl groups include, but are not limited to, 2-furyl, 3-furyl, N-imidazolyl, 2-imidazolyl, 4-imidazolyl, 5-imidazolyl, 3-isoxazolyl, 4-isoxazolyl, 5-isoxazolyl, 2-oxazolyl, 4-oxazolyl, 5-oxazolyl, N-pyrrolyl, 2-pyrrolyl, 3-pyrrolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, pyridazinyl (e.g., 3-pyridazinyl), 2-thiazolyl, 4-thiazolyl, 5-thiazolyl, tetrazolyl (e.g., 5-tetrazolyl), triazolyl (e.g., 2-triazolyl and 5-triazolyl), 2-thienyl, 3-thienyl, pyrazolyl, isothiazolyl, 1,2, 3-oxadiazolyl, 1,2, 5-oxadiazolyl, 1,2, 4-oxadiazolyl, 1,2, 3-triazolyl, 1,2, 3-thiadiazolyl, 1,3, 4-thiadiazolyl, 1,2, 5-thiadiazolyl, pyrazinyl, 1,3, 5-triazinyl, pyrimidinonyl, pyridonyl; the following bicyclic rings are also included, but are in no way limited to these: benzimidazolyl, benzofuranyl, benzotetrahydrofuranyl, benzothienyl, indolyl (e.g., 2-indolyl), and the like.

The term "heteroarylalkyl" means that an alkyl group is substituted with one or more heteroaryl groups, wherein the alkyl group and heteroaryl groups have the meaning as set forth herein.

The term "heteroaryloxy" includes optionally substituted heteroaryl groups, as defined herein, attached to and linked by an oxygen atom to the rest of the molecule, wherein the heteroaryl group has the meaning as described herein.

When the compounds of the present invention contain an acid moiety, salts of the compounds of the present invention include those derived from alkali or alkaline earth metals as well as those derived from ammonia and amines. Preferred cations include sodium, potassium, magnesium and those of formula N⁺(R¹⁹R²⁰R²¹R²²) Ammonium cation of (2), wherein R is¹⁹、R²⁰、R²¹And R²²Independently selected from hydrogen, C₁-C₆Alkyl and C₁-C₆A hydroxyalkyl group. Salts of compounds of formula (I) may be prepared by treating a compound of formula (I) with a metal hydroxide (e.g., sodium hydroxide) or an amine (e.g., ammonia, trimethylamine, diethanolamine, 2-methylthiopropylamine, diallylamine, 2-butoxyethylamine, morpholine, cyclododecylamine or benzylamine).

When a compound of the invention comprises a base moiety, acceptable salts can be formed from organic and inorganic acids, such as acetic, propionic, lactic, citric, tartaric, succinic, fumaric, maleic, malonic, mandelic, malic, phthalic, hydrochloric, hydrobromic, phosphoric, nitric, sulfuric, methanesulfonic, napthalenesulfonic, benzenesulfonic, toluenesulfonic, camphorsulfonic, and similarly known acceptable acids.

Compositions and formulations of the compounds of the invention

The compounds of the present invention are generally useful as herbicidal active ingredients in compositions, i.e., formulations, having at least one additional component selected from the group consisting of surfactants, solid diluents and liquid diluents, used as a carrier. The formulation or composition ingredients are selected to be compatible with the physical characteristics of the active ingredient, the mode of application, and environmental factors such as soil type, moisture and temperature.

Useful formulations include liquid compositions and solid compositions. Liquid compositions include solutions (including emulsifiable concentrates), suspensions, emulsions (including microemulsions and/or suspoemulsions), and the like, which may optionally be thickened into gels. Common types of aqueous liquid compositions are soluble concentrates, suspension concentrates, capsule suspensions, concentrated emulsions, microemulsions and suspoemulsions. Common types of non-aqueous liquid compositions are emulsifiable concentrates, microemulsifiable concentrates, dispersible concentrates and oil dispersions.

The general types of solid compositions are powders, granules, pellets, prills, lozenges, tablets, filled films (including seed coatings), and the like, which may be water dispersible ("wettable") or water soluble. Films and coatings formed from film-forming solutions or flowable suspensions are particularly useful for seed treatment. The active ingredient may be (micro) encapsulated and further formed into a suspension or solid formulation; alternatively, the entire active ingredient formulation may be encapsulated (or "coated"). Encapsulation may control or delay the release of the active ingredient. Emulsifiable granules combine the advantages of both emulsifiable concentrate formulations and dry granular formulations. The high concentration compositions are mainly used as intermediates for other formulations.

Sprayable formulations are typically dispersed in a suitable medium prior to spraying. Such liquid and solid formulations are formulated to be readily diluted in a spray medium, typically water. The spray volume may be in the range of about one to several thousand liters per hectare, but more typically in the range of about ten to several hundred liters per hectare. The sprayable formulation may be mixed with water or another suitable medium in a water tank for treatment of the foliage by air or ground application, or applied to the growing medium of the plant. The liquid and dry formulations can be dosed directly into the drip irrigation system or into the furrow during planting.

The formulation will typically comprise effective amounts of active ingredient, diluent and surfactant, the sum being 100% by weight.

Solid diluents include, for example, clays such as bentonite, montmorillonite, attapulgite and kaolin, gypsum, cellulose, titanium dioxide, zinc oxide, starches, dextrins, sugars (e.g., lactose, sucrose), silica, talc, mica, diatomaceous earth, urea, calcium carbonate, sodium carbonate and bicarbonate and sodium sulfate. Typical solid Diluents are described in Handbook of the instruments Dust Diluents and Carriers, 2 nd edition, Dorland Books, Caldwell, new jersey, Watkins et al.

Liquid diluents include, for example, water, N-dimethyl alkanamides (e.g., N-dimethylformamide), limonene, dimethyl sulfoxide, N-alkylpyrrolidones (e.g., N-methylpyrrolidone), ethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, propylene carbonate, butylene carbonate, paraffins (e.g., white mineral oil, N-paraffins, isoparaffins), alkylbenzenes, alkylnaphthalenes, glycerol, triacetin, sorbitol, aromatic hydrocarbons, dealkylated aliphatics, alkylbenzenes, alkylnaphthalenes, ketones (e.g., cyclohexanone, 2-heptanone, isophorone and 4-hydroxy-4-methyl-2-pentanone), acetates (e.g., isoamyl acetate, hexyl acetate, heptyl acetate, octyl acetate, nonyl acetate, tridecyl acetate, and isobornyl acetate), Other esters (such as alkylated lactates, dibasic esters and gamma-butyrolactones), and may be straight chain, branched chain, saturated or unsaturated alcohols (such as methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, n-hexanol, 2-ethylhexanol, n-octanol, decanol, isodecanol, isostearyl alcohol, cetyl alcohol, lauryl alcohol, tridecyl alcohol, oleyl alcohol, cyclohexanol, tetrahydrofurfuryl alcohol, diacetone alcohol and benzyl alcohol). Liquid diluents also include glycerol esters of saturated and unsaturated fatty acids (typically C6-C22), such as vegetable seed and fruit oils (e.g., olive oil, castor oil, linseed oil, sesame oil, corn oil, peanut oil, sunflower oil, grapeseed oil, safflower oil, cottonseed oil, soybean oil, rapeseed oil, coconut oil, and palm kernel oil), animal derived fats (e.g., tallow, lard, cod liver oil, fish oil), and mixtures thereof. Liquid diluents also include alkylated (e.g., methylated, ethylated, butylated) fatty acids, which can be obtained by hydrolysis of vegetable and animal derived glycerides and can be purified by distillation. Typical liquid diluents are described in Marsden's Solvents Guide, 2 nd edition, Interscience, New York, 1950.

The solid and liquid compositions of the present invention typically comprise one or more surfactants. Surfactants (also known as "surface active agents") generally change when added to a liquid, most often lowering the surface tension of the liquid. Surfactants can be used as wetting agents, dispersing agents, emulsifying agents, or defoaming agents, depending on the nature of the hydrophilic and lipophilic groups in the surfactant molecule.

Surfactants can be classified as nonionic, anionic, or cationic surfactants. Nonionic surfactants useful as compositions of the present invention include, but are not limited to: alcohol alkoxylates, such as alcohol alkoxylates based on natural and synthetic alcohols (which are branched or linear) and prepared from alcohols and ethylene oxide, propylene oxide, butylene oxide or mixtures thereof; amine ethoxylation, alkanolamides, and ethoxylated alkanolamides; alkoxylated triglycerides, such as ethoxylated soybean, castor and rapeseed oil; alkylphenol alkoxylates such as octylphenol ethoxylate, nonylphenol ethoxylate, dinonylphenol ethoxylate and dodecylphenol ethoxylate (prepared from phenol and ethylene oxide, propylene oxide, butylene oxide or mixtures thereof); a block polymer prepared from ethylene oxide or propylene oxide and a reverse block polymer, wherein the end block is prepared from propylene oxide; ethoxylated fatty acids; ethoxylated fatty esters and oils; ethoxylated methyl esters; ethoxylated tristyrylphenols (including those prepared from ethylene oxide, propylene oxide, butylene oxide, or mixtures thereof); fatty acid esters, glycerides, lanolin-based derivatives, polyethoxylated esters, such as polyethoxylated sorbitan fatty acid esters, polyethoxylated sorbitol fatty acid esters, and polyethoxylated glycerol fatty acid esters; other sorbitan derivatives, such as sorbitan esters; polymeric surfactants such as random copolymers, block copolymers, alkyd PEG (polyethylene glycol) resins, graft or comb polymers, and star polymers; polyethylene glycol (PEG); polyethylene glycol fatty acid esters; a silicone-based surfactant; and sugar derivatives such as sucrose esters, alkyl polyglucosides, and alkyl polysaccharides.

Useful anionic surfactants include, but are not limited to: alkyl aryl sulfonic acids and their salts; carboxylated alcohols or alkylphenol ethoxylates; a diphenyl sulfonate derivative; lignin and lignin derivatives, such as lignosulfonates; maleic or succinic acid or anhydrides thereof; olefin sulfonates; phosphate esters such as phosphate esters of alcohol alkoxylates, phosphate esters of alkylphenol alkoxylates, and phosphate esters of styrylphenol ethoxylates; a protein-based surfactant; a sarcosine derivative; styrylphenol ether sulfate; sulfates and sulfonates of oils and fatty acids; sulfates and sulfonates of ethoxylated alkylphenols; sulfates of alcohols; sulfates of ethoxylated alcohols; amine and amide sulfonates, such as N, N-alkyl taurates; benzene, cumene, toluene, xylene, and sulfonates of dodecylbenzene and tridecylbenzene; a sulfonate of condensed polynaphthalene; sulfonates of naphthalene and alkylnaphthalenes; sulfonates of petroleum fractions; sulfosuccinamates; and sulfosuccinates and their derivatives, such as dialkyl sulfosuccinates.

Useful cationic surfactants include, but are not limited to: amides and ethoxylated amides; amines such as N-alkyl propylene diamine, tripropylene triamine and dipropylene tetramine, and ethoxylated, ethoxylated and propoxylated amines (prepared from amines and ethylene oxide, propylene oxide, butylene oxide or mixtures thereof); amine salts, such as amine acetates and diamine salts; quaternary ammonium salts such as quaternary salts, ethoxylated quaternary salts and diquaternary salts; and amine oxides such as alkyldimethylamine oxide and bis- (2-hydroxyethyl) -alkylamine oxide.

Also useful in the compositions of the present invention are mixtures of nonionic and anionic surfactants or mixtures of nonionic and cationic surfactants. Nonionic, anionic and cationic surfactants and their proposed uses are disclosed in a number of published references, including McCutcheon's emulsions and Detergents published by McCutcheon's Division, The Manufacturing meeting Publishing co, north american and international yearbook versions; the Encyclopedia of Surface active Agents, chemical Publ.Co., Inc., New York, 1964, by Sisely and Wood; and Synthetic Detergents, seventh edition, John Wiley and Sons, New York, 1987, by a.s.davidson and b.milwidsky.

The compositions of the present invention may also contain formulation adjuvants and additives known to those skilled in the art as co-formulations (some of which may also be considered to act as solid diluents, liquid diluents or surfactants). Such formulation aids and additives may control: pH (buffer), foaming during processing (antifoam such as polyorganosiloxane), sedimentation of the active ingredient (suspending agent), viscosity (thixotropic thickener), microbial growth in the container (biocide), product freezing (antifreeze), color (dye/pigment dispersion), elution (film former or binder), evaporation (anti-evaporation agent), and other formulation attributes. Film formers include, for example, polyvinyl acetate copolymers, polyvinylpyrrolidone-vinyl acetate copolymers, polyvinyl alcohol copolymers, and waxes. Examples of formulation aids and additives include McCutcheon's volume 2 published by McCutcheon's division, The Manufacturing conditioner Publishing co: functional Materials, north american and international yearbook versions; and those listed in PCT publication WO 03/024222.

The compounds of the present invention and any other active ingredients are typically incorporated into the compositions of the present invention by dissolving the active ingredient in a solvent or by grinding the active ingredient in a liquid diluent or a dry diluent. Solutions, including emulsifiable concentrates, can be prepared by simply mixing the ingredients. If the solvent of the liquid composition used as an emulsifiable concentrate is water-immiscible, an emulsifier is usually added to emulsify the solvent containing the active ingredient upon dilution with water. A media mill may be used to wet grind an active ingredient slurry having a particle size of up to 2,000 μm to obtain particles having an average diameter of less than 3 μm. The aqueous slurry can be prepared as a finished suspension concentrate (see, e.g., U.S.3,060,084) or further processed by spray drying to form water-dispersible granules. Dry formulations typically require a dry milling step, which results in an average particle size in the range of 2 to 10 μm. Powders and dusts can be prepared by mixing, and usually by grinding (e.g., with a hammer mill or fluid energy mill). Particles and granules can be prepared by spraying the active substance onto preformed particle carriers or by agglomeration techniques. See Browning "agglomerization" (Chemical Engineering, 12.4.1967, pages 147-48; Perry's Chemical Engineering' Handbook, 4 th edition, McGraw-Hill, New York, 1963, pages 8-57 and later and WO 91/13546. the pellets can be prepared as described in u.s.4,172,714. the water dispersible and water soluble particles can be prepared as set forth in u.s.4,144,050, u.s.3,920,442 and de.3,246,493. the tablets can be prepared as set forth in u.s.5,180,587, u.s.5,232,701 and u.s.5,208,030. the films can be prepared as set forth in GB2,095,558 and u.s.3,299,566.

For additional information regarding The field of formulation, see "The formulations's Toolbox-Product Forms for model Agriculture" in T.S. woods, The food-environmental Challenge, T.Brooks and T.R. Roberts eds, Proceedings of The 9th International conformation on Pesticide Chemistry, The Royal Society of Chemistry, Cambridge, 1999, p.120-. See also U.S.3,235,361, column 6, line 16 to column 7, line 19 and examples 10-41; U.S. Pat. No. 3,309,192, column 5, column 43 to column 7, column 62 and examples 8, 12, 15, 39, 41, 52, 53, 58, 132, 138, 162, 164, 166, 167 and 169, 182; U.S.2,891,855 at column 3, line 66 to column 5, line 17 and examples 1-4; wed Control as a Science by Klingman, John Wiley and Sons, Inc., New York, 1961, pages 81-96; weed Control Handbook, 8 th edition, Blackwell scientific Publications, Oxford, 1989, by Hance et al; and Developments in relational technology, PJB Publications, Richmond, UK, 2000.

Use of the Compounds of the invention

The herbicides of the present invention can be used by spraying plants, applying to soil, applying to the surface of water. The amount of the active ingredient is appropriately determined to meet the purpose of use. The content of the active ingredient is appropriately determined depending on the purpose.

The amount of the compound of the present invention to be used depends on the kind of the compound to be used, the target weed, the tendency of weed to appear, environmental conditions, the kind of herbicide, and the like. When the herbicides of the invention are used as such, for example in the form of powders or granules, the amount is suitably selected from 1g to 50kg, preferably 10g to 10kg, per 1 hectare of active ingredient. When the herbicide of the present invention is used in a liquid form, for example, in the form of an emulsifiable concentrate, a wettable powder or a flowable formulation, the amount thereof is suitably selected from 0.1 to 50,000ppm, preferably from 10 to 10,000 ppm.

The present invention provides a method for controlling weeds in a crop of useful plants, comprising applying to said weeds or to the locus of said weeds, or to said useful plants or to the locus of said useful plants, a compound or composition of the invention.

The present invention also provides a method of selectively controlling grasses and/or weeds in crops of useful plants, which comprises applying to the useful plants or the locus thereof or to the area of cultivation a herbicidally effective amount of a compound of formula (I).

The term "herbicide" means a compound that controls or modifies the growth of plants. The term "herbicidally effective amount" means the amount of such a compound or combination of such compounds that is capable of producing a control or modification of the growth of plants. The effects of control or modification include all deviations from natural development, e.g., kills, delays, leaf burns, albinism, dwarfing, etc. The term "plant" refers to all tangible parts of a plant, including seeds, seedlings, plantlets, roots, tubers, stems, stalks, leaves, and fruits. The term "locus" is intended to include soil, seeds and seedlings, as well as established plants (grassed habitat) and includes not only areas where weeds may have grown, but also areas where weeds have not yet emerged, and also areas for the planting of crops of useful plants. "planted area" includes the land on which crop plants have grown, as well as the land intended for planting such crop plants. The term "weeds" as used herein means any undesirable vegetation and thus includes not only important agronomic weeds as described below, but also volunteer crop plants.

Crops of useful plants in which the compositions according to the invention may be used include, but are not limited to, perennial crops such as citrus fruits, grapevines, nuts, oil palms, olives, pome fruits, stone fruits and rubber, and annual arable crops such as cereals (such as barley and wheat), cotton, oilseed rape, maize, rice, soya, sugar beet, sugar cane, sunflowers, ornamentals, switchgrass, turf and vegetables, especially cereals, maize and soya.

The herbicide of the present invention exhibits high safety to crops, particularly rice, wheat, barley, corn, sorghum, soybean, cotton, beet, etc.

The grasses and weeds to be controlled can be both monocotyledonous species, such as agrostis, alopecurus, avena, brachiaria, bromus, tribulus, cyperus, digitaria, barnyard grass, kojima, lolium, monocrotonia, panicum, poa, cylindron, arrowhead, scirpus, setaria, sida and sorghum, and dicotyledonous species, such as kenaf, amaranthus, chenopodium, chrysanthemum, euphorbia, labra, ipomoea, kochia, eclipta, polygonum, rhodomyrtus, sinapis, solanum, chickweed, veronica, viola and xanthium.

The compounds of the invention may show tolerance to important crops including, but not limited to, alfalfa, barley, cotton, wheat, canola, sugar beet, corn (maize), sorghum, soybean, rice, oats, peanut, vegetables, tomato, potato, perennial plant crops including coffee, cocoa, oil palm, rubber, sugar cane, citrus, grapes, fruit trees, nut trees, bananas, plantains, pineapple, hops, tea and forests such as eucalyptus and conifer (e.g., loblolly pine), and turf varieties (e.g., prairie grass, san augustine grass (st. augustine grass), Kentucky grass and bermudagrass).

If desired, the compounds of the formula (I) according to the invention can also be used in combination with other active ingredients, for example other herbicides and/or insecticides and/or acaricides and/or nematicides and/or molluscicides and/or fungicides and/or plant growth regulators. These mixtures, and the use of these mixtures for controlling the growth of weeds and/or undesired vegetation, form yet further aspects of the invention. For the avoidance of doubt, inventive mixtures also include mixtures of two or more different compounds of formula (I). In particular, the present invention also relates to a composition according to the invention comprising, in addition to the compound of formula (I), at least one further herbicide.

When a compound of formula (I) is combined with at least one additional herbicide, the following mixtures of compounds of formula (I) are preferred. Compound of formula (I) + acetochlor, compound of formula (I) + acifluorfen-sodium, compound of formula (I) + aclonifen, compound of formula (I) + acrolein, compound of formula (I) + larvas, compound of formula (I) + diclofop-methyl, compound of formula (I) + allyl alcohol, compound of formula (I) + ametryn, compound of formula (I) + amicarbazone, compound of formula (I) + amidosulfuron, compound of formula (I) + aminocyclopyrachlor, compound of formula (I) + aminopyralid, compound of formula (I) + clomazone, compound of formula (I) + aminopyralid, compound of formula (I) + sulfamate, ammonium sulfamate, sodium sulfamate, bromacil, Compound of formula (I) + anilofos, compound of formula (I) + asulam, compound of formula (I) + atrazine, compound of formula (I) + ivermectin (aviglycine), compound of formula (I) + oxadiazon, compound of formula (I) + tetrazolium, compound of formula (I) + BCPC, compound of formula (I) + beflubutamid, compound of formula (I) + benazolin, compound of formula (I) + benzofenamate (bencambazone), compound of formula (I) + flumioxazin, compound of formula (I) + furazan, compound of formula (I) + bensulfuron-methyl, compound of formula (I) + bensulam, compound of formula (I) + bensulap, compound of formula (I) + bensulide, compound of formula (I) + bentazon, compound of formula (I) + bentazofamid, compound of formula (I) + bensultap bensulam-methyl, Compound of formula (I) + mesotrione, compound of formula (I) + bicyclopyrone, compound of formula (I) + dicyclopyrone, compound of formula (I) + bifenox, compound of formula (I) + bialaphos, compound of formula (I) + bispyribac-sodium, compound of formula (I) + borax, compound of formula (I) + herbicidal, compound of formula (I) + butyryl-chloramide, compound of formula (I) + bromophenol oxime (bromophenoxim), compound of formula (I) + bromoxynil, compound of formula (I) + butachlor, compound of formula (I) + butafenacil, compound of formula (I) + fluoropyrimidoyl flurazone, compound of formula (I) + butafenacet, Compound of formula (I) + glufosinate, compound of formula (I) + butralin, compound of formula (I) + butroxylon, compound of formula (I) + dichloflufen, compound of formula (I) + dimethylarsinic acid, compound of formula (I) + calcium chlorate, compound of formula (I) + cafenstrole, compound of formula (I) + carpronium, compound of formula (I) + carfentrazone-ethyl, compound of formula (I) + CDEA, compound of formula (I) + CEPC, compound of formula (I) + shaping alcohol-methyl, compound of formula (I) + chlorphenamine, compound of formula (I) + chlorimuron (chlorimuron), compound of formula (I) + chlorimuron-ethyl, compound of formula (I) + chloroacetic acid, compound of formula (I) + chlortoluron, compound of formula (I) + chlorpropham, compound of formula (I) + chlorsulfuron, compound of formula (I) + dichlorthal (chlorothal), compound of formula (I) + dichlorthal-dimethyl, compound of formula (I) + indolodon-ethyl, compound of formula (I) + cinmethylin, compound of formula (I) + sulfoethermethyl, compound of formula (I) + pyroxene, compound of formula (I) + clethodim, compound of formula (I) + clodinafop, Compound of formula (I) + clodinafop propargyl (clodinafoproparyl), compound of formula (I) + clomazone, compound of formula (I) + clofenamid, compound of formula (I) + clofenamido (cloransulam), compound of formula (I) + clofenamido-methyl (cloransulam-methyl), compound of formula (I) + CMA, compound of formula (I) +4-CPB, compound of formula (I) + CPMF, compound of formula (I) +4-CPP, compound of formula (I) + CPPC, compound of formula (I) + cresol, compound of formula (I) + benzosulfuron, compound of formula (I) + cyanamide (cyanamide) + cyanamide (I) +, Compound of formula (I) + cyanazine, compound of formula (I) + bentazone, compound of formula (I) + cyclosulfamuron, compound of formula (I) + thiopyran, compound of formula (I) + cyhalofop-butyl (cyhalofop-butyl), compound of formula (I) +2,4-D, compound of formula (I) +3,4-DA, compound of formula (I) + fururon, compound of formula (I) + dalapon, compound of formula (I) + dazomet, compound of formula (I) +2,4-DB, compound of formula (I) +3,4-DB, compound of formula (I +2,4-DEB, compound of formula (I + betalain, compound of formula (I) + dimethoate, compound of formula (I + dicamba), compound of formula (I + dichlobenil, compound of formula (I + o-dichlorobenzene), compound of formula (I + P-dichlorobenzene), compound of formula (I + dichloropropionic acid-P), compound of formula (I + diclofop), compound of formula (I) + diclofop-methyl, compound of formula (I) + diclosulam, compound of formula (I) + difenzoquat, compound of formula (I) +, Compound of formula (I) + diflufenican, compound of formula (I) + diflufenzopyr, compound of formula (I) + oxazolone, compound of formula (I) + pyroxsulam, compound of formula (I) + dimethenamid, compound of formula (I) + isoacetochlor, compound of formula (I) + dimethenamid-P, compound of formula (I) + thionine, compound of formula (I) + dimethylarsinic acid, compound of formula (I) + fluanid, compound of formula (I) + tebucol, compound of formula (I) + metaldehyde, compound of formula (I) + ipropyn), compound of formula (I) + benoxaden, compound of formula (I) + flurazote, flurazone, compound of formula (I) +, Compound of formula (I) + diquat dibromide, compound of formula (I) + dithiopyr, compound of formula (I) + diuron, compound of formula (I) + DNOC, compound of formula (I) +3,4-DP, compound of formula (I) + DSMA, compound of formula (I) + EBEP, compound of formula (I) + endothal, compound of formula (I) + EPTC, compound of formula (I) + penetrol, compound of formula (I) + ethylbutenfluanid, compound of formula (I) + aminobenzsulfuron-methyl, formula (I) + ethephon, compound of formula (I) +) carbendazim, compound of formula (I) + ethephon, compound of formula (I) + furoxan, compound of formula (I) + benfurazone, dithiopyr, compound of formula (I) +, dithiopyr, Compound of formula (I) + fluroxypyr ether, compound of formula (I) + ethoxysulfuron, compound of formula (I) + phenetole, compound of formula (I) + fenoxaprop-P, fenoxaprop-P, compound of formula (I) + fenoxaprop-ethyl, fenoxaprop-ethyl of formula (I) + fenoxaprop-penthyl), compound of formula (I) + tetrazolamide, compound of formula (I) + ferrous sulfate, compound of formula (I) + mevinolin-M, compound of formula (I) + flazasulfuron, compound of formula (I) + diflufenican, florasulam, Compound of formula (I) + fluazifop, compound of formula (I) + fluazifop-butyl, compound of formula (I) + fluazifop-P-butyl, compound of formula (I) + isopyrazate (fluazolate), compound of formula (I) + fluoroketosulfuron-sodium, compound of formula (I) + fluazifop-ethyl, compound of formula (I) + flufenacet, compound of formula (I) + flupyridazine (flufenpyr), compound of formula (I) + flupyridazone-ethyl, compound of formula (I) + fluflurazoxylin, Compound of formula (I) + flumetsulam, compound of formula (I) + flumiclorac-pentyl, compound of formula (I) + flumetsulam, compound of formula (I) + flumetop, compound of formula (I) + fluometuron, compound of formula (I) + fluoroglycofen (fluoroglycofurofen), compound of formula (I) + fluoroglycofen-ethyl (fluoroglycofuron-ethyl), compound of formula (I) + fluoroprop (fluorooxaprot), compound of formula (I) + fluxofenazole (fluxofam), compound of formula (I) + flupropaferol), compound of formula (I) + flupropaferon + flufenamate, compound of formula (I) + flufenamidopropyl, compound of formula (I) + flufenamate, compound of formula (I) + flufenacetrimsulfuron, compound of formula (I) +, Compound of formula (I) + butadine, compound of formula (I) + fluridone (fluridone), compound of formula (I) + fludioxolone, compound of formula (I) + fluroxypyr, compound of formula (I) + flurtamone, compound of formula (I) + oxazinoxalic acid, compound of formula (I) + oxazino-methyl, compound of formula (I) + fomesafen, compound of formula (I) + foramsulfuron, compound of formula (I) + conditioning phosphine, compound of formula (I) + glufosinate, compound of formula (I) + glyphosate, compound of formula (I) + halauxifen, methyl ester, fluroxypyr, compound of formula (I) + fluroxypyr, compound of formula (I) + halosulfuron-methyl, compound of formula (I) + haloxyfop-ethyl, compound of formula (I) + haloxyfop-P, compound of formula (I) + HC-252, compound of formula (I) + hexazinone, compound of formula (I) + imazamox methyl, compound of formula (I) + imazethapyr, compound of formula (I) + imazapyr, compound of formula (I) + imazamox, compound of formula (I) + imazaquin, compound of formula (I) + imazethapyr, compound of formula (I) + imazasulfuron, compound of formula (I) + pyrazosulfuron-methyl, Compound of formula (I) + indandim, compound of formula (I) and triazinediamine (indaziflam), compound of formula (I) + methyl iodide, compound of formula (I) + iodometsulfuron-methyl-sodium, compound of formula (I) + iodobenzonitrile, compound of formula (I) and ebazone (ipfencarbazone), compound of formula (I) + isoproturon, compound of formula (I) + isoxoron, compound of formula (I) + isoxon, compound of formula (I) + isoxaben, compound of formula (I) + isoxaflutole, compound of formula (I) + tetramisoxaflutole, compound of formula (I) +, Compound of formula (I) + lactofen, compound of formula (I) + cyhalofop-butyl, compound of formula (I) + lenacil, compound of formula (I) + linuron, compound of formula (I) + MAA, compound of formula (I) + MAMA, compound of formula (I) + MCPA-thioethyl, compound of formula (I) + MCPB, compound of formula (I) + chlorophenoxypropionic acid (mecoprop), compound of formula (I) + chlorophenoxypropionic acid-P, compound of formula (I) + mefenacet, compound of formula (I) + flufenide, compound of formula (I) + disulfuron-methyl, thiuron-methyl, thidiazuron, Compound of formula (I) + mesotrione, compound of formula (I) + metam, compound of formula (I) + metamifop, compound of formula (I) + metamitron, compound of formula (I) + pyrazoxazole, compound of formula (I) + pyrazosulfuron-ethyl, compound of formula (I) and diethofenchloropyrazosulfuron (methazosulfuron), compound of formula (I) + mefenathiuron, formula (I) + mefenazole (methazole), compound of formula (I) and methicillin (methiozolin), compound of formula (I) + methylarsinic acid, compound of formula (I) + mefenacetron, compound of formula (I) + metoxuron, compound of formula (I) + bromogluron, compound of formula (I) + metosulam + metolachlor, Compound of formula (I) + metolachlor, compound of formula (I) + sulfentrazone, compound of formula (I) + metoxuron, compound of formula (I) + metribuzin, compound of formula (I) + metsulfuron), compound of formula (I) + metsulfuron-methyl, compound of formula (I) + MK-616, compound of formula (I) + diclofop-methyl, compound of formula (I) + chlorsulfuron, compound of formula (I) + bensulfuron, compound of formula (I) + glusulfuron and monosulfuron (monosulfuron), compound of formula (I) + monosulfuron-ester, compound of formula (I) + MSMA, compound of formula (I) + napropamide, compound of formula (I) + alachlor-methyl, compound of formula (I) + napropamide, compound of formula (I) + metolachlor, Compound of formula (I) + naproxen, formula (I) + NDA-402989, compound of formula (I) + fenflururon, compound of formula (I) + nicosulfuron, formula (I) + fluorochlormid (nipyraclofen), formula (I) + n-methyl glyphosate, compound of formula (I) + nonanoic acid, compound of formula (I) + norflurazon, compound of formula (I) + oleic acid (fatty acids), compound of formula (I) + prosulfocarb, compound of formula (I) + pyribencarb, compound of formula (I) + pyribensulfuron, compound of formula (I) + amosulalin, compound of formula (I) + oxadiargyl, compound of formula (I) + bensulfuron, compound of formula (I) + oxadiargyl of formula (I), compound of formula (I) + oxadiargyl, compound of formula (I) +, Compound of formula (I) + cloxazoline, compound of formula (I) + oxyfluorfen, compound of formula (I) + paraquat dihydrochloride, compound of formula (I) + dichlormate, compound of formula (I) + pendimethalin, compound of formula (I) + penoxsulam, compound of formula (I) + pentachlorophenol, compound of formula (I) + mechlorethamine, compound of formula (I) + cyclopentadiol, compound of formula (I) + dimethoxamine, compound of formula (I) + petroleum oils, compound of formula (I) + phenmedipham, compound of formula (I) + phenmedim, compound of formula (I) + phenmedipham-ethyl, phenmedim, phen, Compound of formula (I) + picloram, compound of formula (I) + flupyrazamide, compound of formula (I) + pinoxaden, compound of formula (I) + piperaphos, compound of formula (I) + arsenite, compound of formula (I) + potassium azide, compound of formula (I) + pretilachlor, compound of formula (I) + primisulfuron-methyl, compound of formula (I) + flumeturon-methyl, compound of formula (I) + aminotrifluralin, compound of formula (I) + flutolanil, compound of formula (I) + cycloxadim, formula (I) + proxadione-calceium), compound of formula (I) + prometon, compound of formula (I) + flunixol, compound of formula (I) + flunipagin, fluquine, compound of formula (I), fluquine, compound of formula (I) +, Compound of formula (I) + prometryn, compound of formula (I) + propaquizamide, compound of formula (I) + propanil, compound of formula (I) + propaquizafop, compound of formula (I) + anilazine, compound of formula (I) + propisochlor, compound of formula (I) + albenuron, compound of formula (I) + albendan-sodium, compound of formula (I) + propyzamide, compound of formula (I) + prosulfocarb, compound of formula (I) + pyraclonil, compound of formula (I) + pyraflufen-ethyl, Compound of formula (I) + sulfonatopyrazole (pyrasulfotole), compound of formula (I) + pyrazolate, compound of formula (I) + pyrazosulfuron-ethyl, compound of formula (I) + benzoxazole, compound of formula (I) + pyribenzoxim, compound of formula (I) + pyributea-ethyl, compound of formula (I) + chlorobenzotriol (pyridafol), compound of formula (I) + pyridate, compound of formula (I) + pyribenzoxim, compound of formula (I) + pyriminobac-methyl, compound of formula (I) + pyrithiobac-n, compound of formula (I) + pyrithiobac-methyl, Compound of formula (I) + pyrithiobac-sodium, formula (I) + pyrosulfuron (pyroxasulfone), formula (I) + pyrimethanil (pyroxualm), compound of formula (I) + quinconazole (pyroxulam), compound of formula (I) + quinclorac, compound of formula (I) + chloroquinolinic acid, compound of formula (I) + fucoxanthin, compound of formula (I) + quizalofop), compound of formula (I) + quizalofop-ethyl, compound of formula (I) + zalofop-P-ethyl), compound of formula (I) + rimsulfuron, compound of formula (I) + bensulfuron, compound of formula (I) + saflufenacil, compound of formula (I) + fluazifop-P-ethyl, Compound of formula (I) + cycluron, compound of formula (I) + simazine, compound of formula (I) + simetryn, compound of formula (I) + SMA, compound of formula (I) + sodium arsenite, compound of formula (I) + sodium azide, compound of formula (I) + sodium chloride, compound of formula (I) + sulcotrione, compound of formula (I) + sulfentrazone, compound of formula (I) + sulfosulfuron, compound of formula (I) + sulfuric acid, compound of formula (I) + pyrone, pyroxylin, sodium chloride, compound of formula (I) +2,3,6-TBA, compound of formula (I) + TCA-sodium, formula (I) + gramidil (tebutam), compound of formula (I) + buthiuron, formula (I) + bicyclosulfonate, compound of formula 1) + Tembotrione, compound of formula (I) + dinetofenuron, compound of formula (I) + terbutazone, compound of formula (I) + terbutaline, compound of formula (I) + terbutazone, compound of formula (I) + desmetryn, compound of formula (I) + methoxythiachlor, compound of formula (I) + thiafluazuron (thiazafluron), compound of formula (I) + thiazopyr, thiazop, Compound of formula (I) + thifensulfuron-methyl, compound of formula (I) + dithianesulfonyl (thiencarbazone), compound of formula (I) + thifensulfuron-methyl, compound of formula (I) + prosulfocarb, compound of formula (I) + topramezone, compound of formula (I) + tralkoxydim, compound of formula (I) and triafamone (triafamone), compound of formula (I) + triallate, compound of formula (I) + triasulfuron-methyl, compound of formula (I) + triallate-herbicidal, Compound of formula (I) + triclopyr, compound of formula (I) + atrazine, compound of formula (I) + trifloxysulfuron-sodium, compound of formula (I) + trifluralin, compound of formula (I) + triflusulfuron-methyl, compound of formula (I) + triflusoxypropionic acid (trifop), compound of formula (I) + trifloxysopropionic acid-methyl (trifop-methyl), compound of formula (I) + trihydroxy triazine, compound of formula (I) + trinexapac-ethyl), compound of formula (I) + triflusulfuron, compound of formula (I) + 3- [ 2-chloro-4-fluoro-5- Ethyl (1-methyl-6-trifluoromethyl-2, 4-dioxo-1, 2,3, 4-tetrahydropyrimidin-3-yl) phenoxy ] -2-pyridyloxy ] acetate (CAS RN 353292-31-6), compounds of formula (I) +2- [ [ 8-chloro-3, 4-dihydro-4- (4-methoxyphenyl) -3-oxo-2-quinoxalinyl ] carbonyl ] -1, 3-cyclohexanedione and compounds of formula (I) + VX-573.

The compounds of formula (I) according to the invention can also be used in combination with one or more safeners. Likewise, mixtures of the compounds of formula (I) according to the invention with one or more further active ingredients, in particular with one or more further herbicides, can also be used in combination with one or more safeners. The term "safener" as used herein means a chemical that, when used in combination with a herbicide, reduces the undesirable effects of the herbicide on non-target organisms, e.g., a safener protects crops from damage by the herbicide, but does not prevent the herbicide from killing weeds. When a compound of formula (I) is combined with a safener, the following combinations of a compound of formula (I) with a safener are particularly preferred. Compound of formula (I) + AD 67(MON4660), compound of formula (I) + benoxacor, compound of formula (I) + mequindox, compound of formula (I) + mefenacet and the (Z) isomer of compound of formula (I) + corresponding mefenacet, compound of formula (I) + cyprosulfamide (CAS RN221667-31-8), compound of formula (I) + dichloracrylamide, compound of formula (I) and dicyclonone (dicyclonon), compound of formula (I) and diethanolate (diethoxylate), compound of formula (I) + mefenpyr, compound of formula (I) +), compound of formula (I) + mefenpyr, compound of formula (I) + furazolazole and a compound of formula (I) + the corresponding R isomer or methylfumazone, compound of formula (I) + ethylbisbenzoxazole acid, compound of formula (I) + mefenpyr-diethyl ester, compound of formula (I) and cresylate (mephenate), compound of formula (I) + oxabetrinil, compound of formula (I) + naphthalic anhydride (CAS RN 81-84-5), compound of formula (I) and TI-35, compound of formula (I) + N-isopropyl-4- (2-methoxy-benzoyl sulfamoyl) -benzamide (CAS RN221668-34-4) and compound of formula (I) + N- (2-methoxybenzoyl) -4- [ (methylamino-carbamoyl) -4- [ (methylamino) ethyl-methyl-ethyl-propyl-4- (2-methoxy-benzoyl sulfamoyl) -benzamide (CAS RN221668-34-4) Alkylcarbonyl) amino ] benzenesulfonamide. Particularly preferred are mixtures of compounds of formula (I) with cloquintocet-mexyl, compounds of formula (I) with mefenpyr-diethyl, compounds of formula (I) with cyprosulfamide and mixtures of compounds of formula (I) with N- (2-methoxybenzoyl) -4- [ (methylaminocarbonyl) amino ] benzenesulfonamide. General synthetic procedure

In this specification, a structure is dominant if there is any difference between the chemical name and the chemical structure. In general, the compounds of the invention may be prepared by the methods described herein, unless otherwise indicated. The following synthetic schemes and examples 1-8 serve to further illustrate the context of the present invention.

Synthesis scheme I

The compounds of formula (c) may be prepared by synthetic schemesUpon preparation of R⁷And R⁸Have the meaning as described herein; reacting the compound 4- (((5, 5-dimethyl-4, 5-dihydroisoxazol-3-yl) thio) methyl) -1H-1,2, 4-triazol-5 (4H) -one with the compound of formula (a) to obtain a compound of formula (b); and oxidizing the compound of the formula (b) to obtain the compound of the formula (c).

Examples

Example 1: synthesis of 4- (((5, 5-dimethyl-4, 5-dihydroisoxazol-3-yl) sulfonyl) methyl) -N-ethyl-5-oxo-N-phenyl-4, 5-dihydro-1H-1, 2, 4-triazole-1-carboxamide

Step 1, synthesis of intermediate 3- ((chloromethyl) thio) -5, 5-dimethyl-4, 5-dihydroisoxazole

3-chloro-5, 5-dimethyl-4, 5-dihydroisoxazole (53.4g,0.4mol) was dissolved in DMF (100mL), and then sodium thiomethoxide solution (20%, 210g,0.6mol) was slowly added dropwise thereto, stirring was continued for 12 hours and stopped, then water (300mL) was added to the above reaction mixture and stirred, ethyl acetate (100mL) was extracted three times, the organic phases were combined, and the solvent was removed under reduced pressure to give 34.5g of 5, 5-dimethyl-3- (methylthio) -4, 5-dihydroisoxazole as a yellow liquid in 59.5% yield.

5, 5-dimethyl-3- (methylthio) -4, 5-dihydroisoxazole (34.5g,0.24mol) was dissolved in carbon tetrachloride (100mL), NCS (34.9g,0.26mol) was added, the reaction mixture was stirred at room temperature for 12 hours to stop the reaction, the reaction mixture was cooled at 0 ℃ for 30 minutes under stirring, and then filtered, the filtrate was concentrated under reduced pressure, and column chromatography was performed (eluent: Petrolum ether/EtOAc (v/v) ═ 20/1) to give 19.1g of a yellow oil, yield: 44.7 percent.

MS-ESI:m/z 180.1[M+H]⁺。

Step 2, Synthesis of intermediate 4- (((5, 5-dimethyl-4, 5-dihydroisoxazol-3-yl) thio) methyl) -1H-1,2, 4-triazol-5 (4H) -one

1, 2-dihydro-3H-1, 2, 4-triazol-3-one (1g,11.8mmol) and potassium carbonate (2g,14.7mmol) were dissolved in DMF (50mL), 3- ((chloromethyl) thio) -5, 5-dimethyl-4, 5-dihydroisoxazole (1.8g,9.8mmol) was added, and the mixture was stirred at 80 ℃ for 3H. The solvent was removed under reduced pressure, and the resulting mixture was dissolved in dichloromethane (80mL), washed with water, separated, the organic phase was dried over anhydrous sodium sulfate, concentrated, and separated by column chromatography (eluent: Petroleum ether/EtOAc (v/v) ═ 10/1) to give 1.4g of a pale yellow solid, yield: 53 percent.

MS-ESI:m/z 229.1[M+H]⁺。

Step 3, Synthesis of intermediate 4- (((5, 5-dimethyl-4, 5-dihydroisoxazol-3-yl) thio) methyl) -N-ethyl-5-oxo-N-phenyl-4, 5-dihydro-1H-1, 2, 4-triazole-1-carboxamide

Intermediate 4- (((5, 5-dimethyl-4, 5-dihydroisoxazol-3-yl) thio) methyl) -1H-1,2, 4-triazol-5 (4H) -one (0.46g,2mmol) and pyridine (0.32g,4mmol) were dissolved in dichloromethane (20mL), stirred at 25 deg.C, N-ethyl-N-phenylchlorocarboxamide (0.73g,4mmol) was added, and the reaction was continued for 12H at 40 deg.C to stop the reaction. Then, water (100mL) was added to the reaction mixture, and the mixture was stirred, ethyl acetate (50mL) was extracted three times, and the organic phases were combined, and the solvent was removed under reduced pressure to obtain 0.71g of a brown liquid oil in yield: 95.0 percent.

MS-ESI:m/z 376.1[M+H]⁺。

Step 4 Synthesis of Compound 4- (((5, 5-dimethyl-4, 5-dihydroisoxazol-3-yl) sulfonyl) methyl) -N-ethyl-5-oxo-N-phenyl-4, 5-dihydro-1H-1, 2, 4-triazole-1-carboxamide

Dissolving intermediate 4- (((5, 5-dimethyl-4, 5-dihydroisoxazol-3-yl) thio) methyl) -N-ethyl-5-oxo-N-phenyl-4, 5-dihydro-1H-1, 2, 4-triazole-1-carboxamide (0.71g,1.9mmol) and m-chloroperoxybenzoic acid (85%, 0.77g,3.8mmol) in dichloromethane (20mL), stirring at room temperature and 25 deg.C, stopping the reaction for 4H, then washing the above mixture with 50mL of water, saturated sodium sulfite, saturated brine, saturated sodium bicarbonate, saturated brine, three times, extracting dichloromethane (50mL), combining the organic phases, removing the solvent under reduced pressure, separating (eluent: Petrium ether/EtOAc (v/v) ═ 10/1), 0.37g of yellow oil was obtained, yield: 48.1 percent.

MS-ESI:m/z 407.8[M+H]⁺；

¹H NMR(400MHz,CDCl₃) (ppm)7.51(s,1H),7.34(t, J ═ 7.6Hz,2H),7.24(d, J ═ 7.4Hz,1H),7.13(d, J ═ 7.4Hz,2H),4.93(s,2H),3.89(q, J ═ 7.1Hz,2H),3.04(s,2H),1.23(t, J ═ 7.1Hz, 3H). With reference to step 3 of example 1, the intermediate compounds of table 1 were obtained using the corresponding starting materials.

TABLE 1

Referring to step 4 of example 1, the target compounds of table 2 were obtained using the corresponding starting materials.

TABLE 2

Biological examples

Compound preparation: a certain mass of the original drug is weighed by an analytical balance (0.0001g), dissolved by DMF containing 1% of Tween-80 emulsifier to prepare 1.0% of mother liquor, and then diluted by distilled water for later use.

The test method comprises the following steps: the potting method comprises the test targets of piemarker, redroot amaranth, snakehead intestine, crab grass, cockspur grass and green bristlegrass. A flowerpot with the inner diameter of 7.5cm is taken, composite soil (vegetable garden soil: seedling raising matrix, 1:2, v/v) is filled to 3/4 positions, the six weed targets are directly sown (the germination rate is more than or equal to 85 percent), the soil is covered by 0.2cm, and the weeds are kept for later use when the weeds grow to about 3-leaf stage. After each compound is applied to an automatic spray tower (model: 3WPSH-700E) according to the dosage of 300g a.i./ha, the weed leaves are transplanted to a greenhouse for culture after the liquid medicine on the surfaces of the weeds is dried, and the activity (%) of the weeds is checked after 25 days.

And (3) test results: the test results are shown in table a.

TABLE A

The result shows that the compound has good herbicidal activity on piemarker, cockspur grass and green bristlegrass at 300g ai/ha, and the herbicidal activity is superior to pyroxasulfofone; the herbicidal activity against Amaranthus retroflexus, snakehead intestine and crab grass is comparable to that of Pyroxasulfofone.

The compound has good control effect on broadleaf weeds (such as piemarker, amaranthus retroflexus and snakehead gut) and grassy weeds (such as crab grass, cockspur grass and green bristlegrass). The compound provided by the invention is a novel compound which has a wider weed control spectrum, is lower in cost and is safe to crops under a lower dosage. The control effect on weeds is better than that of commercial herbicides and isoxazoline compounds with similar structures.

Claims (6)

1. A compound which is a compound of formula (II) or a salt of a compound of formula (II):

(II)；

wherein

R⁷Is C_1-4Alkyl radical, C_3-6Cycloalkyl radical, C_6-10Aryl or C_6-10Aryl radical C_1-3An alkyl group;

R⁸is C_1-5Alkyl or C_3-6A cycloalkyl group;

R⁷and R⁸Each independently optionally substituted by 1 or 2 substituents selected from fluorine, chlorine, bromine, iodine or C_1-4Alkyl is substituted by a substituent;

x and Y are each independently CH or N.

2. The compound of claim 1, wherein

R⁷Is methyl, ethyl, n-propyl, isopropyl, phenyl, benzyl, cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl; r⁷Optionally substituted with 1 or 2 substituents selected from fluoro, chloro, bromo, iodo, methyl or ethyl.

3. The compound of claim 1, wherein

R⁸Is methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl.

4. A compound which is a compound having one of the following structures or a salt of a compound having one of the following structures:

5. a composition comprising a compound of any one of claims 1-4.

6. Use of a compound according to any one of claims 1 to 4 or a composition according to claim 5 as a herbicide in agriculture.