WO2010074751A1 - Stable sulfoximine-insecticide compositions - Google Patents

Stable sulfoximine-insecticide compositions Download PDF

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Publication number
WO2010074751A1
WO2010074751A1 PCT/US2009/006676 US2009006676W WO2010074751A1 WO 2010074751 A1 WO2010074751 A1 WO 2010074751A1 US 2009006676 W US2009006676 W US 2009006676W WO 2010074751 A1 WO2010074751 A1 WO 2010074751A1
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Prior art keywords
acid
composition
methyl
mmol
ethyl
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PCT/US2009/006676
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French (fr)
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WO2010074751A8 (en
Inventor
Kuide Qin
Raymond E. Boucher
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Dow Agrosciences, Llc
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Family has litigation
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Priority to AU2009330661A priority Critical patent/AU2009330661B2/en
Priority to MX2011006907A priority patent/MX2011006907A/en
Priority to CA2748133A priority patent/CA2748133C/en
Priority to EP09795589.2A priority patent/EP2369921B1/en
Priority to NZ593046A priority patent/NZ593046A/en
Priority to KR1020177002319A priority patent/KR101816507B1/en
Priority to ES09795589.2T priority patent/ES2589007T3/en
Priority to DK09795589.2T priority patent/DK2369921T3/en
Priority to EP16181237.5A priority patent/EP3120701B1/en
Priority to PL16181237T priority patent/PL3120701T3/en
Priority to CN200980152712.2A priority patent/CN102264224B/en
Priority to BRPI0923724A priority patent/BRPI0923724B8/en
Priority to UAA201109223A priority patent/UA106363C2/en
Priority to RU2011131058/13A priority patent/RU2518251C2/en
Priority to JP2011543497A priority patent/JP5548215B2/en
Priority to KR1020117017443A priority patent/KR101702337B1/en
Priority to MX2015001806A priority patent/MX361091B/en
Application filed by Dow Agrosciences, Llc filed Critical Dow Agrosciences, Llc
Publication of WO2010074751A1 publication Critical patent/WO2010074751A1/en
Priority to ZA2011/03926A priority patent/ZA201103926B/en
Priority to IL213705A priority patent/IL213705A/en
Publication of WO2010074751A8 publication Critical patent/WO2010074751A8/en
Priority to IL253256A priority patent/IL253256B/en

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Classifications

    • 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
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/22—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing ingredients stabilising the active ingredients
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/40—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having a double or triple bond to nitrogen, e.g. cyanates, cyanamides
    • 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
    • A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D213/26—Radicals substituted by halogen atoms or nitro radicals
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D213/28—Radicals substituted by singly-bound oxygen or sulphur atoms
    • C07D213/32—Sulfur atoms
    • C07D213/34—Sulfur atoms to which a second hetero atom is attached
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D213/44—Radicals substituted by doubly-bound oxygen, sulfur, or nitrogen atoms, or by two such atoms singly-bound to the same carbon atom
    • C07D213/52—Sulfur atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D213/54—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D213/57—Nitriles
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/61—Halogen atoms or nitro radicals
    • 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
    • C07D409/04—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 directly linked by a ring-member-to-ring-member bond

Definitions

  • the invention disclosed in this document is related to the field of pesticides and their use in controlling pests.
  • compositions have been developed over time to destroy pests and alleviate the damages they cause.
  • physical and chemical instabilities can lead to a reduction in pesticidal activity of the composition and/or present complications when it comes time to apply the composition to a locus where pest control is necessary or desired.
  • physical and chemical instabilities can alter one or more properties of the composition which make it difficult or impossible to prepare appropriate solutions of the composition for use.
  • many pesticide compositions are provided in a concentrated formulation from the manufacturer and are subsequently diluted by an end user before their application. During the time between manufacture and application, liquid forms of pesticide compositions can solidify as a result of chemical and physical instabilities of the composition.
  • the present invention concerns novel compositions including one or more N- substituted (6-haloalkylpyridin-3-yl)alkyl sulfoximines and an organic acid or a salt thereof and their use in controlling insects and certain other invertebrates, particularly aphids and other sucking insects.
  • This invention also includes new synthetic procedures for preparing the compositions and methods of controlling insects using the compositions.
  • compositions useful for the control of insects especially useful for the control of aphids and other sucking insects. More specifically, the invention concerns compositions including an organic acid or a salt thereof and a compound of the formula (1)
  • X represents NO 2 , CN or COOR 4 ;
  • L represents a single bond or R 1 , S and L taken together represent a 4-, 5- or 6- membered ring;
  • R 1 represents (Ci-C 4 ) alkyl
  • R 2 and R 3 are distinct from each other and individually represent hydrogen, methyl, ethyl, flouro, chloro or bromo; n is 1 when L represents a single bond and is O when R 1 , S and L taken together represents a 4-, 5- or 6- membered ring;
  • Y represents (Ci-C 4 ) haloalkyl, F, Cl, Br, or I;
  • R 4 represents (Ci-C 3 ) alkyl.
  • the composition includes a compound of formula (I) wherein L represents a single bond, i.e., having the following structure wherein n is 1
  • X represents NO 2 , CN or COOR 4 ;
  • R 1 represents (Ci-C 4 ) alkyl;
  • R 2 and R 3 are distinct from each other and individually represent hydrogen, methyl, ethyl, flouro, chloro or bromo;
  • Y represents (Ci-C 4 ) haloalkyl, F, Cl, Br, or I;
  • R 4 represents (C,-C 3 ) alkyl.
  • the composition includes a compound of formula (I) wherein R 1 , S and L taken together form a saturated 5-membered ring, and n is O, i.e., having the structure
  • X represents NO 2 , CN or COOR 4 ;
  • composition includes compounds of formula (I) in one or more of the following classes:
  • compositions described herein may be comprised of combinations of the above described classes of the compound of formula (I).
  • the organic acid is a carboxylic acid selected from the group consisting of citric acid, phthalic acid, malic acid, tartaric acid, maleic acid, malonic acid, lactic acid and succinic acid.
  • a method includes applying to a locus where control is desired an insect-inactivating amount of a pesticide composition.
  • alkyl (including derivative terms such as alkoxy) means straight chain, branched chain and cyclic groups including, for example, methyl, ethyl, 1-methylethyl, propyl, 1,1- dimethylethyl and cyclopropyl.
  • alkoxy means an alkyl further consisting of a carbon-oxygen single bond, for example, methoxy, ethoxy, propoxy, isopropoxy, 1-butoxy, 2-butoxy, isobutoxy, tert-butoxy, pentoxy, 2-methylbutoxy, 1,1-dimethylpropoxy, hexoxy, heptoxy, octoxy, nonoxy, and decoxy.
  • aryl means a cyclic, aromatic substituent consisting of hydrogen and carbon, for example, phenyl, naphthyl, and biphenylyl.
  • halo means fluoro, chloro, bromo, and iodo.
  • haloalkyl means an alkyl group substituted with from one to the maximum possible number of halogen atoms, all combinations of halogens included.
  • step a of Scheme A sulfide of formula (A) is oxidized with meta- chloroperoxybenzoic acid (mCPBA) in a polar solvent below O 0 C to provide sulfoxide of formula (B).
  • mCPBA meta- chloroperoxybenzoic acid
  • step a of Scheme A sulfide of formula (A) is oxidized with meta- chloroperoxybenzoic acid (mCPBA) in a polar solvent below O 0 C to provide sulfoxide of formula (B).
  • mCPBA meta- chloroperoxybenzoic acid
  • dichloromethane is the preferred solvent for oxidation.
  • step b of Scheme A sulfoxide (B) is iminated with sodium azide in the presence of concentrated sulfuric acid in an aprotic solvent under heating to provide sulfoximine of formula (C). In most cases, chloroform is the preferred solvent for this reaction.
  • the nitrogen of sulfoximine (C) can be either cyanated with cyanogen bromide in the presence of a base, or nitrated with nitric acid in the presence of acetic anhydride under mildly elevated temperature, or carboxylated with alkyl (R4) chloroformate in the presence of base such as 4-dimethylaminopyridine (DMAP) to provide N-substitutedsulfoximine (Ia).
  • Base is required for efficient cyanation and carboxylation and the preferred base is DMAP, whereas sulfuric acid is used as catalyst for efficient nitration reaction.
  • step a of Scheme B sulfide is oxidized with iodobenzene diacetate in the presence of cyanamide at O 0 C to give sulfilimine (D).
  • the reaction can be carried out in a polar aprotic solvent like CH 2 Cl 2 .
  • step b of Scheme B the sulfilimine (D) is oxidized with mCPBA.
  • a base such as potassium carbonate is employed to neutralize the acidity of /wCPBA.
  • Protic polar solvents such as ethanol and water are used to increase the solubility of the sulfilimine starting material and the base employed.
  • the sulfilimine (D) can also be oxidized with aqueous sodium or potassium periodinate solution in the presence of catalyst ruthenium trichloride hydrate or similar catalyst.
  • the organic solvent for this catalysis can be polar aprotic solvent such as CH 2 Cl 2 , chloroform, or acetonitrile.
  • KHMDS potassium hexamethyldisilamide
  • an amine e.g., pyrrolidine
  • DAST diethylaminosulfur trifluoride
  • Example I Preparation of n-[6-(trifiuoromethvOpyridin-3-yl1ethylHmethvOoxido- ⁇ 4 - sulfanylidenecyanamide (2).
  • Sulfoximine (2) is commonly known as sulfoxaflor, further details of which are available at http://www.alanwood.net/pesticides/index en frame.html.
  • sulfoximine (2) is also referred to as [methyl(oxido) ⁇ l-[6- (trifluoromethyl)-3-pyridyl]ethyl ⁇ - ⁇ 6 -sulfanylidene]cyanamide, and the CAS name given to sulfoximine (2) is N-[methyloxido[l-[6-(trifluoromethyl)-3-pyridinil]ethyl]- ⁇ 4 - sulfanylidene]cyanamide.
  • Example III Preparation of (l- ⁇ 6-rchloro(difluoro)methyl1pyridin-3-yl)ethv ⁇ (methyl)- oxido- ⁇ 4 -sulfanylidenecvanamide (4).
  • Example V Preparation of [l-(6-difluorornethylpyridin-3-yl)ethyl1(methyl)-oxido- ⁇ 4 -sulfa- nylidenecyanamide (6).
  • Example VI Preparation of ri-(6-pentafluoroethylpyridin-3-yl)ethyl](methylVoxido- ⁇ 4 - sulfanylidenecyanamide (7).
  • Example VII Preparation of 2-trifluoromethyl-5-(l- ⁇ methyl(oxido)[oxido(oxo)hydrazono]- ⁇ 4 -sulfanyl ⁇ ethyr>pyridine (8).
  • compositions of this invention can include compounds that can exist as one or more stereoisomers.
  • compositions of the present invention can include compounds of racemic mixtures, individual stereoisomers and optically active mixtures. It will be appreciated by those skilled in the art that one stereoisomer may be more active than the others. Individual stereoisomers and optically active mixtures may be obtained by selective synthetic procedures, by conventional synthetic procedures using resolved starting materials or by conventional resolution procedures.
  • Example I (trifluoromethyl)pyridin-3-yl]ethyl ⁇ (methyl)oxido- ⁇ 4 -sulfanylidenecyanamide compound described in Example I includes four separate stereoisomers. These four stereoisomers define two pairs of diastereomers, which for the purposes of this document are labeled as diastereomer groups A and B.
  • Diastereomer group A is defined by ⁇ (/?)-l-[6- (triflouromethyl)pyridin-3-yl]ethyl ⁇ -( ⁇ )-(methyl)oxido- ⁇ 4 -sulfanylidenecyanamide (A 1 ) and ⁇ (S)- 1 -[6-(triflouromethyl)pyridin-3-yl]ethyl ⁇ -(S)-(methy I)oxido- ⁇ 4 -sulfany lidenecyanam ide (A 2 ) as represented below.
  • Diastereomer group B is defined by ⁇ (/?)-l-[6-(triflouromethyl)pyridin-3-yl]ethyl ⁇ -
  • diastereomer groups (A) and (B) are present in an approximate 1 :2 mixture. However, it is has been discovered that a conversion occurs between diastereomer groups (A) and (B) over time.
  • the presence of diastereomer group A significantly increases as a result of exposure to increased temperatures over time, thereby presenting chemical and physical stability issues with respect to compositions including the ⁇ l-[6- (trifluoromethyl)pyridin-3-yl]ethyl ⁇ (methyl)oxido- ⁇ 4 -sulfanylidenecyanamide compound.
  • the addition of small amounts of one or more organic acids or the salts thereof to a compound according to formula (I) substantially stabilizes the ratio between stereoisomers of the compound.
  • the addition of organic acid maintains the ratio between two pairs of diastereomers.
  • the organic acid includes at least one carboxylic acid functional group.
  • carboxylic acid functional group refers to a functional group having the structural formula
  • organic acids with at least one carboxylic acid functional group include carboxylic acid, formic acid, acetic acid, stearic acid, lactic acid, madelic acid, acrylic acid, oleic acid, benzoic acid, citric acid, salicylic acid, tartaric acid, succinic acid, pthalic acid, malonic acid, methacrylic acid, oxalic acid, ispcitric acid, crotonic acid, glyceric acid, p- Toluic acid, propanoic acid, heptanoic acid, butanoic acid, tartronic acid, nitroacetic acid, cyanoecetic acid, methoxyacetic acid, flouroacetic acid, chloroacetic acid, bromoacetic acid, dichloroacetic acid, glutaric acid, trichloroacetic acid, malic acid, hexanoic acid, trimellitic acid, trimesic acid, aconitic acid, tricarballylic acid and gallic acid.
  • the organic acid includes three carboxylic acid functional groups.
  • organic acids with three carboxylic acid groups include citric acid, isocitric acid, trimellitic acid, trimesic acid, tricarballylic acid, aconitic acid and mixtures thereof.
  • the salt of an organic acid refers to a compound in which the hydrogen of the acid is replaced by a metal or its equivalents while retaining the same organic moiety as the organic acid.
  • metals that may be found in the salts include, but are not limited to, potassium, sodium, lithium, calcium, and aluminum.
  • the salt is a citrate salt of citric acid.
  • citrate salts include sodium citrate, trisodium citrate dihydrate, sodium citrate dihydrate, potassium citrate, lithium citrate and mixtures thereof.
  • the salt is a potassium hydrogen phthalate salt of phthalic acid. Still, it is contemplated that the salt may also be provided in one or more alternative forms.
  • a composition includes one compound or a mixture of compounds according to formula (I) and an organic acid or a salt thereof.
  • the composition includes a ratio, by weight, between the compound according to formula (I) and the organic acid or salt thereof from about 300: 1 to about 10: 1.
  • the ratio, by weight, between the compound according to formula (I) and the organic acid or salt thereof is from about 280: 1 to about 20: 1.
  • the ratio, by weight, between the compound according to formula (I) and the organic acid or salt thereof is from about 260: 1 to about 30: 1.
  • the ratio, by weight, between the compound according to formula (1) and the organic acid or salt thereof is from about 250: 1 to about 40: 1.
  • the ratio, by weight, between the compound according to formula (I) and the organic acid or salt thereof is from about 245: 1 to about 45: 1. In yet another form, the ratio, by weight, between the compound according to formula (I) and the organic acid or salt thereof is from about 240: 1 to about 48:1.
  • a method includes providing a composition including a compound according to formula (I) in an isomeric mixture. More particularly, the isomeric mixture is defined by two pairs of diastereomers. In one form of this embodiment, the two pairs of diastereomers are present in a ratio of about 2:1. However, alternative values for the ratio between the diastereomers are contemplated.
  • the two pairs of diastereomers may be present in a ratio from about 1 :4 to about 12:1, from about 1 :2 to about 8:1 or from about 1:1 to about 4:1.
  • the method further includes adding an organic acid or a salt thereof to the composition.
  • adding the organic acid or salt thereof to the composition substantially maintains the ratio between the two pairs of diastereomers over a period of time.
  • the period of time that the ratio is maintained may be at least two weeks, at least one month, at least three months, at least six months or at least 12 months or longer.
  • alternative values for the period of time that the ratio is maintained are contemplated.
  • the ratio between the two pairs of diastereomers is substantially maintained for at least two weeks when the composition is in the presence of temperatures above ambient, which as used herein means between 18-28° C.
  • temperatures above ambient which as used herein means between 18-28° C.
  • the temperature above ambient is in the range of 50-60° C, although alternative ranges are contemplated for the temperature above ambient as well as the period of time in which the ratios are maintained.
  • compositions of this invention may also be provided with a phytologically- acceptable inert carrier in the form of sprays, topical treatments, gels, seed coatings, microcapsulations, systemic uptake, baits, eartags, boluses, foggers, fumigants aerosols, dusts and many others.
  • formulations are applied as aqueous suspensions or emulsions.
  • Such suspensions or emulsions are produced from water-soluble, water suspendable, or emulsifiable formulations which are (1) solids, usually known as wettable powders or water dispersible granules or (2) liquids, usually known as emulsifiable concentrates, aqueous emulsions, suspension concentrates and water suspended capsules containing the composition.
  • solids usually known as wettable powders or water dispersible granules or
  • liquids usually known as emulsifiable concentrates, aqueous emulsions, suspension concentrates and water suspended capsules containing the composition.
  • any material to which the composition can be added may be used, provided they yield the desired utility without significant interference with the activity of the composition as a pesticide.
  • Wettable powders which may be compacted, extruded or processed through a dispersion in water followed by spray drying or fluid bed agglomeration to form water dispersible granules, comprise an intimate mixture of the composition, an inert carrier and surfactants.
  • concentration of the composition in the wettable powder is usually from 10 percent to 90 percent by weight based on the total weight of the wettable powder, more preferably 25 wt. percent to 75 wt. percent.
  • the composition can be compounded with any finely divided solid, such as prophyllite, talc, chalk, gypsum, Fuller's earth, bentonite, attapulgite, starch, casein, gluten, montmorillonite clays, diatomaceous earths, purified silicates or the like.
  • the finely divided carrier and surfactants are typically blended with the composition and milled.
  • Emulsifiable concentrates of the composition comprise a convenient concentration, such as from 5 wt. percent to 75 wt. percent of the composition, in a suitable liquid, based on the total weight of the concentrate.
  • the composition is dissolved in an inert carrier, which is either water, a water miscible solvent, a water immiscible solvent, or a mixture thereof and emulsifiers.
  • the concentrates may be diluted with water and oil to form spray mixtures in the form of oil-in-water emulsions.
  • Useful organic solvents include aromatics, especially the high-boiling naphthalenic and olefinic portions of petroleum such as heavy aromatic naphtha.
  • Other organic solvents may also be used, such as, for example, terpenic solvents, including rosin derivatives, aliphatic ketones, such as cyclohexanone, and complex alcohols, such as 2- ethoxyethanol.
  • Emulsifiers which can be advantageously employed herein can be readily determined by those skilled in the art and include various nonionic, anionic, cationic and amphoteric emulsifiers, or a blend of two or more emulsifiers.
  • nonionic emulsifiers useful in preparing the emulsifiable concentrates include the polyalkylene glycol ethers and condensation products of alkyl and aryl phenols, aliphatic alcohols, aliphatic amines or fatty acids with ethylene oxide, propylene oxides such as the ethoxylated alkyl phenols and carboxylic esters solubilized with the polyol or polyokyalkylene.
  • Cationic emulsifiers include quaternary ammonium compounds and fatty amine salts.
  • Anionic emulsifiers include the oil-soluble salts (e.g., calcium) of alkylaryl sulphonic acids, oil soluble salts or sulfated polyglycol ethers and appropriate salts of phosphated polyglycol ether.
  • aromatic liquids such as xylene, propyl benzene fractions; or mixed naphthalene fractions, mineral oils, substituted aromatic organic liquids such as dioctyl phthalate; kerosene; dialkyl amides of various
  • Preferred organic liquids include xylene, and propyl benzene fractions, with propylbenzene fractions being most preferred.
  • Surface-active emulsifying agents are typically employed in liquid formulations and in an amount of from 0.1 to 20 percent by weight based on the combined weight of the emulsifying agent with the composition.
  • the formulations comprising the composition of the present invention can also contain other compatible additives, for example, miticides, insecticides, plant growth regulators, other fungicides, and other biologically active compounds used in agriculture.
  • Aqueous suspensions comprise suspensions of the composition, dispersed in an aqueous vehicle at a concentration in the range from 5 to 50 weight percent, based on the total weight of the aqueous suspension.
  • Aqueous suspensions are prepared by vigorously mixing the composition of the present invention, or its solution, into a vehicle comprised of water and surfactants chosen from the same types discussed above. Other components, such as inorganic salts and synthetic or natural gums, may also be added to increase the density and viscosity of the aqueous vehicle.
  • aqueous suspensions include suspensions of oil droplets (EWs), solids (SCs), and capsules (CS's).
  • the composition can also be applied as granular formulations, which are particularly useful for applications to the soil.
  • Granular formulations usually contain from 0.5 to 10 wt. percent, based on the total weight of the granular formulation of the composition, dispersed in an inert carrier which consists entirely or in large part of coarsely divided inert material such as attapulgite, bentonite, diatomite, clay or a similar inexpensive substance.
  • Such formulations are usually prepared by diluting the composition in a suitable solvent and applying it to a granular carrier which has been preformed to the appropriate particle size, in the range of from 0.5 to 3 mm.
  • a suitable solvent is a solvent in which the compound is substantially or completely soluble.
  • Such formulations may also be prepared by making a dough or paste of the carrier and the composition and solvent, and crushing and drying to obtain the desired granular particle.
  • the composition of the present invention can also be applied as a water dispersible granule, or dry flowable formulation.
  • Water dispersible granules typically contain from 10 to 70 percent of the composition, based on the total weight of the formulation.
  • Such formulations are typically obtained through mixing and/or spraying the mixture onto a carrier with the addition of a dispersing and/or wetting agent, and combining with water to form a mixture suitable for further processing using well known granulation technologies, such as pan granulation, extrusion, spray-drying, fluid bed agglomeration, and the like.
  • Dusts containing the composition can be prepared by intimately mixing the composition with a suitable dusty agricultural carrier, such as, for example, kaolin clay, ground volcanic rock, and the like. Dusts can suitably contain from 1 to 10 wt. percent of the composition, based on the total weight of the dust. Dusts may also be prepared by impregnating the composition onto a carrier in a similar manner to that described for granules above.
  • the formulations of the present invention may additionally contain adjuvant surfactants to enhance deposition, wetting and penetration of the composition onto the target crop and organism.
  • adjuvant surfactants may optionally be employed as a component of the formulation or as a tank mix.
  • the amount of adjuvant surfactant will typically vary from 0.01 to 1.0 percent by volume, based on a spray-volume of water, preferably 0.05 to 0.5 volume percent.
  • Suitable adjuvant surfactants include, but are not limited to ethoxylated nonyl phenols, ethoxylated synthetic or natural alcohols, salts of the esters or sulphosuccinic acids, ethoxylated organosilicones, ethoxylated fatty amines and blends of surfactants with mineral or vegetable oils.
  • Example IX Stability of composition including ⁇ l-f6-(trifluoromethv0pyridin-3- yl]ethylHmethyl)oxido- ⁇ -sulfanylidenecvanamide.
  • a composition (i) having a 1 liter total volume ( ⁇ 1 100 g total weight) was prepared by first adding deionized water to a clean beaker equipped with a mechanical stirrer. The following ingredients were then added to the beaker, in no particular, under continued stirring: 3.5 g of Agnique® DFM 1 12S, a silicon based defoamer available commercially from the Cognis Group, headquartered in Monheim, Germany; 20 g of Tersperse® 2500, a polymeric surfactant commercially available from Huntsman Performance Products, 10003 Woodloch Forest Drive, The Woodlands, TX 77380; 30 g of Morwet® D-360, a surfactant commercially available from Akzo Nobel Surfactants, 525 W.
  • Van Buren St. Chicago, IL 60607; 20 g of Ethylan® NS 500 LQ, a surfactant commercially available from Akzo Nobel Surfactants, 525 W. Van Buren St., Chicago, IL 60607; 40 g of propylene glycol; 1 g of Proxel® GXL, a microbiostat solution commercially available from Arch Chemicals, Inc., 1955 Lake Drive, Suite 100, Smyrna, GA 30080.
  • composition (i) 240 g of ⁇ l-[6-(trifluoromethyl)pyridin-3- yl]ethyl ⁇ (methyl)oxido- ⁇ 4 -sulfanylidenecyanamide was then added to the beaker, followed by the addition of 10 g of Avicel® CL-611, a stabilizer commercially available from FMC BioPolymer, 1735 Market Street, Philadelphia, PA 19103, and 2 g of Kelzan, a xanthan gum commercially available from CP Kelco, 1000 Parkwood Circle, Suite 1000, Atlanta, GA 30339. The ingredients were stirred until a homogeneous mixture' was obtained. The mixture was then milled with a bead mill down to an average particle size of 3-5 ⁇ m.
  • Table 1 The final formulation of composition (i) is set forth in Table 1.
  • composition (i) Two 20 mL samples of composition (i) were collected and individually stored at room temperature and 54 0 C for a period of two weeks in 1 oz. sealed glass jars. After two weeks, the samples were collected and assayed by chromatography to measure the ratio between diastereomer groups A and B of ⁇ l-[6-(trifluoromethyl)pyridin-3-yl]ethyl ⁇ (methyl)oxido- ⁇ 4 - sulfanylidenecyanamide in composition (i). The results of the chromatography analysis are provided in Table 2.
  • Example X Stability of compositions including ⁇ l-f6-(trifluoromethvDpyridin-3- yl1ethyl)(methv0oxido- ⁇ 4 -sulfanylidenecvanamide and an organic acid or a salt thereof.
  • compositions (ii)-(xii) each having a 1 liter total volume ( ⁇ 1100 g) were individually prepared in the manner set forth above with respect to Example IX.
  • Each of compositions (ii)-(xii) included the ingredients of composition (i) and, with the exception of water, each ingredient was provided in the same amount.
  • compositions (ii)-(xii) were prepared in contrast to the preparation of composition (i) however, a small amount of an organic acid or an organic acid salt was added to each of compositions (ii)-(xii) before the 240 g of ⁇ l-[6-(trifluoromethyl)pyridin-3- yl]ethyl ⁇ (methyl)oxido- ⁇ 4 -sulfanylidenecyanamide, 10 g of Avicel® CL-61 1 and 2 g of Kelzan were added.
  • the final formulations of compositions (ii)-(xii) are set forth in Table 3, with the specific organic acid/salt and the amount of same for each of compositions (ii)-(xii) being set forth in Table 4.
  • compositions (ii)-(xii) Two 20 mL samples of each of compositions (ii)-(xii) were collected and individually stored at 5 0 C and 54 0 C for a period of two weeks in 1 oz. sealed glass jars. After two weeks, the samples were collected and assayed by chromatography to measure the ratio between diastereomer groups A and B of ⁇ l-[6-(trifluoromethyl)pyridin-3-yl]ethyl ⁇ (methyl)oxido- ⁇ 4 - sulfanylidenecyanamide in compositions (ii)-(xii).
  • compositions (ii)-(xii) could be replaced with one or a mixture of the compounds according to formula (I) or with an alternative organic acid or salt thereof.
  • compositions could be prepared with one or more co-ingredients in addition to or in lieu of those provided in the Examples.
  • compositions disclosed in this document are useful for the control of invertebrates including insects. Therefore, the present invention also is directed to a method for inhibiting an insect which comprises applying an insect-inhibiting amount of the composition to a locus of the insect, to the area to be protected, or directly on the insect to be controlled.
  • the compositions of the invention may also be used to control other invertebrate pests such as mites and nematodes.
  • insects which eat, damage or contact edible, commodity, ornamental, turf or pasture plants can be controlled by applying the compositions to the seed of the plant before planting, to the seedling, or cutting which is planted, the leaves, stems, fruits, grain, and/or roots, or to the soil or other growth medium before or after the crop is planted. Protection of these plants against virus, fungus or bacterium diseases may also be achieved indirectly through controlling sap-feeding pests such as whitefly, plant hopper, aphid and spider mite. Such plants include those which are bred through conventional approaches and which are genetically modified using modern biotechnology to gain insect-resistant, herbicide-resistant, nutrition-enhancement, and/or any other beneficial traits.
  • compositions might also be useful to protect textiles, paper, stored grain, seeds and other foodstuffs, houses and other buildings which may be occupied by humans and/or companion, farm, ranch, zoo, or other animals, by applying an active composition to or near such objects.
  • domesticated animals, buildings or human beings might be protected with the compositions by controlling invertebrate and/or nematode pests that are parasitic or are capable of transmitting infectious diseases.
  • pests include, for example, chiggers, ticks, lice, mosquitoes, flies, fleas and heartworms.
  • Nonagronomic applications also include invertebrate pest control in forests, in yards, along road sides and railroad right of way.
  • insects or other pests which can be inhibited include, but are not limited to:
  • Lepidoptera Heliothis spp., Helicoverpa spp., Spodoptera spp., Mythimna unipuncta, Agrotis ipsilon, Earias spp., Euxoa auxiliaris, Trichoplusia ni, Anticarsia gemmatalis, Rachiplusia nu, Plutella xylostella, Chilo spp., Scirpophaga incertulas, Sesamia inferens, Cnaphalocrocis medinalis, Ostrinia nubilalis, Cydia pomonella, Carposina niponensis, Adoxophyes orana, Archips argyrospilus, Pandemis heparana, Epinotia aporema, Eupoecilia ambiguella, Lobesia botrana, Polychrosis viteana, Pectinophora gossypiella,
  • Coleoptera Diabrotica spp., Leptinotarsa decemlineata, Oulema oryzae, Anthonomus grandis, Lissorhoptrus oryzophilus, Agriotes spp., Melanotus communis, Popilliajaponica, Cyclocephala spp., Tribolium spp.
  • Reticulitermes flavipes Coptotermes formosanus, Reticulitermes virginicus, Heterotermes aureus, Reticulitermes hesperus, Coptotermes frenchii, Shedorhinotermes spp., Reticulitermes santonensis, Reticulitermes grassei, Reticulitermes banyulensis, Reticulitermes speratus, Reticulitermes hageni, Reticulitermes tibialis, Zootermopsis spp., Incisitermes spp., Marginitermes spp., Macrotermes spp., Microcerotermes spp., Microtermes spp.
  • Orthoptera grasshoppers, crickets
  • Melanoplus spp. Locusta migratoria
  • Schistocerca gregaria Gryllotalpidae (mole crickets).
  • Blattoidea (cockroaches) — Blatta orientalis, Blattella germanica, Periplaneta americana, Supella longipalpa, Periplaneta australasiae, Periplaneta brunnea, Parcoblatta pennsylvanica, Periplaneta fuliginosa, Pycnoscelus surinamensis,
  • compositions to be applied to loci of insects and mites are not critical and can readily be determined by those skilled in the art in view of the examples above. In general, concentrations from 10 ppm to 5000 ppm by weight of compound are expected to provide good control. With many of the compounds, concentrations from 100 to 1500 ppm will suffice.
  • the locus to which a composition is applied can be any locus inhabited by an insect or mite, for example, vegetable crops, fruit and nut trees, grape vines, ornamental plants, domesticated animals, the interior or exterior surfaces of buildings, and the soil around buildings.
  • compositions of the invention may be utilized to control pests on one portion of the plant by applying the compositions to a different portion of it.
  • control of foliar-feeding insects can be controlled by drip irrigation or furrow application, or by treating the seed before planting.
  • Seed treatment can be applied to all types of seeds, including those from which plants genetically transformed to express specialized traits will germinate.
  • compositions can also be provided as an insecticidal bait formulation including attractants and/or feeding stimulants that may be used to increase efficacy of the compositions against insect pest in a device such as trap, bait station, and the like.
  • the bait formulation is usually a solid, semi-solid (including gel) or liquid bait matrix including the stimulants and one or more non-microencapsulated or microencapsulated insecticides in an amount effective to act as kill agents.
  • compositions of the present invention are often applied in conjunction with one or more other insecticides or fungicides or herbicides to obtain control of a wider variety of pests diseases and weeds.
  • the presently claimed compositions can be formulated with the other insecticides or fungicides or herbicide, tank mixed with the other insecticides or fungicides or herbicides, or applied sequentially with the other insecticides or fungicides or herbicides.
  • antibiotic insecticides such
  • Some of the herbicides that can be employed in conjunction with the compositions of the present invention include: amide herbicides such as allidochlor, beflubutamid, benzadox, benzipram, bromobutide, cafenstrole, CDEA, chlorthiamid, cyprazole, dimethenamid, dimethenamid-P, diphenamid, epronaz, etnipromid, fentrazamide, flupoxam, fomesafen, halosafen, isocarbamid, isoxaben, napropamide, naptalam, pethoxamid, propyzamide, quinonamid and tebutam; anilide herbicides such as chloranocryl, cisanilide, clomeprop, cypromid, diflufenican, etobenzanid, fenasulam, flufenacet, flufenican, mefenacet, meflui

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Abstract

Insect controlling compositions including an N-substituted (6-haloalkylpyridin-3- yl)alkyl sulfoximine compound and an organic acid or a salt thereof exhibit increased stability.

Description

STABLE SULFOXIMINE-INSECTICIDE COMPOSITIONS
CROSS-REFERENCE TO RELATED APPLICATIONS:
The present application claims priority to U.S. Provisional Patent Application No. 61/203,689 filed December 26, 2008, the content of which is incorporated herein by reference in its entirety.
FIELD OF THE INVENTION
The invention disclosed in this document is related to the field of pesticides and their use in controlling pests.
BACKGROUND OF THE INVENTION Pests cause millions of human deaths around the world each year. Furthermore, there are more than ten thousand species of pests that cause losses in agriculture. These agricultural losses amount to billions of U.S. dollars each year. Termites cause damage to various structures such as homes. These termite damage losses amount to billions of U.S. dollars each year. As a final note, many stored food pests eat and adulterate stored food. These stored food losses amount to billions of U.S. dollars each year, but more importantly, deprive people of needed food.
Many pesticide compositions have been developed over time to destroy pests and alleviate the damages they cause. With respect to at least some of these compositions, physical and chemical instabilities can lead to a reduction in pesticidal activity of the composition and/or present complications when it comes time to apply the composition to a locus where pest control is necessary or desired. For example, physical and chemical instabilities can alter one or more properties of the composition which make it difficult or impossible to prepare appropriate solutions of the composition for use. More particularly, many pesticide compositions are provided in a concentrated formulation from the manufacturer and are subsequently diluted by an end user before their application. During the time between manufacture and application, liquid forms of pesticide compositions can solidify as a result of chemical and physical instabilities of the composition. Often times, this solidification prevents or substantially impedes the dispersion of the composition into a solution suitable for application, resulting in greater user burden and cost and/or wasted pesticide products. Moreover, when physical and chemical instabilities lead to a reduction in pesticidal activity of a composition, an increase in the concentration at which the pesticide is applied and/or more frequent applications of the pesticide composition are often required. As a result, user costs and the cost to consumers can escalate. Therefore, a need exists for new pesticide compositions that exhibit increased chemical and physical stability properties. U.S. Patent Application Publication 2007/0203191 Al describes certain N-substituted
(6-haloalkylpyridin-3-yl) alkyl sulfoximine compounds and their use in controlling insects. It has now been discovered how to improve the stability of compositions including one or more of these compounds over greater periods of time.
SUMMARY OF THE INVENTION
The present invention concerns novel compositions including one or more N- substituted (6-haloalkylpyridin-3-yl)alkyl sulfoximines and an organic acid or a salt thereof and their use in controlling insects and certain other invertebrates, particularly aphids and other sucking insects. This invention also includes new synthetic procedures for preparing the compositions and methods of controlling insects using the compositions.
This invention concerns compositions useful for the control of insects, especially useful for the control of aphids and other sucking insects. More specifically, the invention concerns compositions including an organic acid or a salt thereof and a compound of the formula (1)
Figure imgf000004_0001
X represents NO2, CN or COOR4;
L represents a single bond or R1, S and L taken together represent a 4-, 5- or 6- membered ring;
R1 represents (Ci-C4) alkyl;
R2 and R3 are distinct from each other and individually represent hydrogen, methyl, ethyl, flouro, chloro or bromo; n is 1 when L represents a single bond and is O when R1, S and L taken together represents a 4-, 5- or 6- membered ring;
Y represents (Ci-C4) haloalkyl, F, Cl, Br, or I; and
R4 represents (Ci-C3) alkyl. In one particular embodiment, the composition includes a compound of formula (I) wherein L represents a single bond, i.e., having the following structure wherein n is 1
Figure imgf000005_0001
wherein
X represents NO2, CN or COOR4; ' R1 represents (Ci-C4) alkyl;
R2 and R3 are distinct from each other and individually represent hydrogen, methyl, ethyl, flouro, chloro or bromo;
Y represents (Ci-C4) haloalkyl, F, Cl, Br, or I; and
R4 represents (C,-C3) alkyl.
In another particular embodiment, the composition includes a compound of formula (I) wherein R1, S and L taken together form a saturated 5-membered ring, and n is O, i.e., having the structure
Figure imgf000005_0002
wherein
X represents NO2, CN or COOR4;
Y represents (Ci-C4) haloalkyl, F, Cl, Br, or I; and R4 represents (C1-C3) alkyl. In certain embodiments, the composition includes compounds of formula (I) in one or more of the following classes:
(1) Compounds of formula (I) wherein X is NO2 or CN, most preferably CN.
(2) Compounds of formula (I) wherein Y is CF3. (3) Compounds of formula (I) wherein R2 and R3 are distinct from each other and independently represent hydrogen, methyl or ethyl.
(4) Compounds of formula (I) wherein R1 represents CH3.
It will be appreciated by those skilled in the art that one or more of the compositions described herein may be comprised of combinations of the above described classes of the compound of formula (I).
In one or more particular embodiments, the organic acid is a carboxylic acid selected from the group consisting of citric acid, phthalic acid, malic acid, tartaric acid, maleic acid, malonic acid, lactic acid and succinic acid.
In yet another embodiment, a method includes applying to a locus where control is desired an insect-inactivating amount of a pesticide composition.
Still, further embodiments, forms, features, aspects, benefits, objects, and advantages of the present invention shall become apparent from the detailed description and examples provided.
SUBSTITUENTS (NON-EXHAUSTIVE LIST)
The examples given for the substituents are (except for halo) non-exhaustive and must not be construed as limiting the invention disclosed in this document.
"alkyl" (including derivative terms such as alkoxy) means straight chain, branched chain and cyclic groups including, for example, methyl, ethyl, 1-methylethyl, propyl, 1,1- dimethylethyl and cyclopropyl.
"alkoxy" means an alkyl further consisting of a carbon-oxygen single bond, for example, methoxy, ethoxy, propoxy, isopropoxy, 1-butoxy, 2-butoxy, isobutoxy, tert-butoxy, pentoxy, 2-methylbutoxy, 1,1-dimethylpropoxy, hexoxy, heptoxy, octoxy, nonoxy, and decoxy.
"aryl" means a cyclic, aromatic substituent consisting of hydrogen and carbon, for example, phenyl, naphthyl, and biphenylyl.
"halo" means fluoro, chloro, bromo, and iodo.
"haloalkyl" means an alkyl group substituted with from one to the maximum possible number of halogen atoms, all combinations of halogens included.
DETAILED DESCRIPTION OF THE INVENTION
Throughout this document, all temperatures are given in degrees Celsius, and all percentages are weight percentages unless otherwise stated.
The compounds of formula (Ia), wherein R1, R2, R3, R4, X, and Y are as previously defined, L is a single bond and n is 1, can be prepared by the methods illustrated in Scheme A:
Scheme A
Figure imgf000008_0001
In step a of Scheme A, sulfide of formula (A) is oxidized with meta- chloroperoxybenzoic acid (mCPBA) in a polar solvent below O 0C to provide sulfoxide of formula (B). In most cases, dichloromethane is the preferred solvent for oxidation.
In step b of Scheme A, sulfoxide (B) is iminated with sodium azide in the presence of concentrated sulfuric acid in an aprotic solvent under heating to provide sulfoximine of formula (C). In most cases, chloroform is the preferred solvent for this reaction. In step c of Scheme A, the nitrogen of sulfoximine (C) can be either cyanated with cyanogen bromide in the presence of a base, or nitrated with nitric acid in the presence of acetic anhydride under mildly elevated temperature, or carboxylated with alkyl (R4) chloroformate in the presence of base such as 4-dimethylaminopyridine (DMAP) to provide N-substitutedsulfoximine (Ia). Base is required for efficient cyanation and carboxylation and the preferred base is DMAP, whereas sulfuric acid is used as catalyst for efficient nitration reaction.
The compounds of formula (Ia), wherein X represents CN and R1, R2, R3, R4 and Y are as previously defined and n is 1, can be prepared by the mild and efficient method illustrated in Scheme B.
Scheme B
Figure imgf000009_0001
In step a of Scheme B, sulfide is oxidized with iodobenzene diacetate in the presence of cyanamide at O 0C to give sulfilimine (D). The reaction can be carried out in a polar aprotic solvent like CH2Cl2. In step b of Scheme B, the sulfilimine (D) is oxidized with mCPBA. A base such as potassium carbonate is employed to neutralize the acidity of /wCPBA. Protic polar solvents such as ethanol and water are used to increase the solubility of the sulfilimine starting material and the base employed. The sulfilimine (D) can also be oxidized with aqueous sodium or potassium periodinate solution in the presence of catalyst ruthenium trichloride hydrate or similar catalyst. The organic solvent for this catalysis can be polar aprotic solvent such as CH2Cl2, chloroform, or acetonitrile.
The α-carbon of the N-substituted sulfoximine of formula (Ia), i.e., n=l, R3 = H in the (CR2R3) group adjacent to the N-substituted sulfoximine function can be further alkylated or halogenated (R5) in the presence of a base such as potassium hexamethyldisilamide (KHMDS) to give N-substituted sulfoximines of formula (Ib), wherein R1, R2, R3, R4, X, L and Y are as previously defined and Z is an appropriate leaving group, as illustrated in Scheme C. The preferred leaving groups are iodide (R5 = alkyl), benzenesulfonimide (R5 = F), tetrachloroethene (R5 = Cl), and tetrafluoroethene (R5 = Br).
Scheme C
Y
Figure imgf000010_0001
The starting sulfides (A) in Scheme A can be prepared in different ways as illustrated in Schemes D, E, F, G and H.
In Scheme D, the sulfide of formula (Ai), wherein R1, R2 and Y are as previously defined, n=l, and R3 = H, can be prepared from the chloride of formula (D) by nucleophilic substitution with the sodium salt of an alkyl thiol.
Scheme D
Figure imgf000010_0002
(D) (A1) In Scheme E, the sulfide of formula (A4), wherein R1, S and L taken together represents a 4-, 5- or 6-membered ring (m = 0, 1, or 2) and n is 0 can be prepared from the corresponding substituted chloromethyl pyridine by treatment with thiourea, hydrolysis and subsequent alkylation with the appropriate bromo chloroalkane (m = 0, 1, or 2) under aqueous base conditions, and cyclization in the presence of a base like potassium-Z-butoxide in a polar aprotic solvent such as THF.
Scheme E
Figure imgf000011_0001
0C
Figure imgf000011_0002
Figure imgf000011_0003
A4 where m=0, 1,2
Sulfides of formula (Ai), wherein R', R^ = CH3, Y as previously defined, and RJ = H, can be prepared alternatively via methods illustrated in Scheme F. Accordingly, the appropriate enone is coupled with dimethyl-aminoacrylonitrile and cyclized with ammonium acetate in DMF to yield the corresponding 6-substituted nicotinonitrile. Treatment with methylmagnesium bromide, reduction with sodium borohydride, chlorination with thionyl chloride, and nucleophilic substitution with the sodium salt of an alkyl thiol provide desired sulfides (Ai).
Scheme F R2
Figure imgf000012_0001
Al
Sulfides of formula (A|), wherein R » 1 - = methyl or ethyl, R and R are distinct from each other and independently represent hydrogen, methyl or ethyl, and Y is as previously defined can be prepared via a variation of Scheme F, depicted in Scheme G, wherein enamines, formed from the addition of an amine, e.g., pyrrolidine, with the Michael adduct of certain sulfides with appropriately substituted α, β-unsaturated aldehydes, are coupled with substituted enones and cyclized with ammonium acetate in acetonitrile to yield the desired sulfides (Ai).
Scheme G
Figure imgf000012_0002
In Scheme H, sulfides of formula (Ai), wherein Y is a fluoroalkyl group, R1, R2 and R3 are as previously defined, and n=l can be prepared from the 6-acylpyridine or 6-formyl pyridine by reaction with diethylaminosulfur trifluoride (DAST). Subsequent halogenation of the 3-methyl group with NBS followed by nucleophilic substitution with the sodium salt of an alkyl thiol furnishes the desired sulfide.
Scheme H
Figure imgf000013_0001
Examples of nonlimiting compounds according to formula (I):
Example I. Preparation of n-[6-(trifiuoromethvOpyridin-3-yl1ethylHmethvOoxido- λ4- sulfanylidenecyanamide (2).
Figure imgf000013_0002
(2)
Figure imgf000013_0003
To a solution of 3-chloromethyl-6-(trifluorornethyl)pyridine (5.1 g, 26 mmol) in dimethyl sulfoxide (DMSO; 20 mL) was added in one portion sodium thiomethoxide (1.8 g, 26 mmol). A violent exothermic reaction was observed which resulted in the reaction turning dark. The reaction was stirred for 1 hr, then additional sodium thiomethoxide (0.91 g, 13 mmol) was added slowly. The reaction was stirred overnight, after which it was poured into H2O and several drops of cone. HCl were added. The mixture was extracted with Et2O (3 x 50 mL) and the organic layers combined, washed with brine, dried over MgSO4 and concentrated. The crude product was purified by chromatography (Prep 500, 10% acetone/hexanes) to furnish the sulfide (A) as a pale yellow oil (3.6 g, 67%). 1H NMR (300 MHz, CDCl3) δ 8.6 (s, I H), 7.9 (d, IH), 7.7 (d, I H), 3.7 (s, 2H), 2.0 (s, 3H); GC-MS: mass calcd for C8H8F3NS [M]+ 207. Found 207. (B)
Figure imgf000014_0001
(A) (B)
To a solution of sulfide (A) (3.5 g, 17 mmol) and cyanamide (1.4 mg, 34 mmol) in CH2Cl2 (30 mL) at 0 0C was added iodobenzenediacetate (1 1.0 g, 34 mmol) all at once. The reaction was stirred for 30 min, then allowed to warm to room temperature overnight. The mixture was diluted with CH2Cl2 (50 mL) and washed with H2O. The aqueous layer was extracted with ethyl acetate (4 x 50 mL), and the combined CH2Cl2 and ethyl acetate layers dried over MgSO4 and concentrated. The crude product was triturated with hexanes and purified by chromatography (chromatotron, 60 percent acetone/hexanes) to furnish the sulfilimine (B) as a yellow gum (0.60 g, 14 percent). IR (film) 3008, 2924, 2143, 1693 cm 1; 1H NMR (300 MHz, CDCl3) δ 8.8 (s, IH), 8.0 (d, IH), 7.8 (d, IH), 4.5 (d, IH), 4.3 (d, IH), 2.9 (s, 3H); LC-MS (ESI): mass calcd for C9H9F3N3S [M+H]+ 248.04. Found 248. (C)
Figure imgf000014_0002
(1)
To a solution of m-chloroperbenzoic acid (mCPBA; 80 percent, 1.0 g, 4.9 mmol) in EtOH (10 mL) at 0° was added a solution Of K2CO3 (1.4 g, 10 mmol) in H2O (7 mL). The solution was stirred for 20 min, then a solution of sulfilimine (B) (0.60 g, 2.4 mmol) in EtOH (20 mL) was added all at once. The reaction was stirred at 0 0C for 30 min, then allowed to warm to room temperature over the course of 1 hr. The reaction was then quenched with aq. sodium bisulfite and the mixture was concentrated to remove ethanol. The resulting mixture was extracted with CH2Cl2 and the combined organic layers dried over MgSO4 and concentrated. The crude product was purified by chromatography (chromatotron, 50 percent acetone/hexanes) to furnish the sulfoximine (1) as an off-white solid (0.28 g, 44 percent). Mp=135-137 0C; 1H NMR (300 MHz, CDCl3) δ 8.8 (s, IH), 8.1 (d, IH), 7.8 (d, IH), 4.7 (m, 2H), 3.2 (s, 3H); LC-MS (ELSD): mass calcd for C9H9F3N3OS [M+H]+ 264.04. Found 263.92.
(D) HMPA,
Figure imgf000015_0002
Figure imgf000015_0001
(1)
(2)
To a solution of sulfoximine (1) (50 mg, 0.19 mmol) and hexamethylphosphoramide (HMPA; 17 μL, 0.10 mmol) in tetrahydrofuran (THF; 2 mL) at -78 0C was added potassium hexamethyldisilazane (KHMDS; 0.5 M in toluene, 420 μL, 0.21 mmol) dropwise. The solution was stirred at -78 0C for an additional 20 min, after which iodomethane (13 μL, 0.21 mmol) was added. The reaction was allowed to warm to room temperature over the course of lhr, after which it was quenched with satd. aq. NH4Cl and extracted with CH2Cl2. The organic layer was dried over Na2SO4, concentrated, and the crude product purified by chromatography (chromatotron, 70 percent acetone/CH2Cl2) to furnish the sulfoximine (2) as a 2: 1 mixture of diastereomers (colorless oil; 31 mg, 59 percent). Sulfoximine (2) is commonly known as sulfoxaflor, further details of which are available at http://www.alanwood.net/pesticides/index en frame.html. According to a revised version of IUPAC nomenclature, sulfoximine (2) is also referred to as [methyl(oxido){ l-[6- (trifluoromethyl)-3-pyridyl]ethyl}-λ6-sulfanylidene]cyanamide, and the CAS name given to sulfoximine (2) is N-[methyloxido[l-[6-(trifluoromethyl)-3-pyridinil]ethyl]-λ4- sulfanylidene]cyanamide. 1H ΝMR (300MHz, CDCl3) δ (major diastereomer) 8.8 (s, IH), 8.1 (d, IH), 7.8 (d, IH), 4.6 (q, IH), 3.0 (s, 3H), 2.0 (d, 3H); (minor diastereomer) 8.8 (s, IH), 8.1 (d, IH), 7.8 (d, IH), 4.6 (q, IH), 3.1 (s, 3H), 2.0 (d, 3H); LC-MS (ELSD): mass calcd for C10H10F3Ν3OS [M+H]+ 278.06. Found 278.05.
Example II. Preparation of 2-(6-trifluoromethylpyridin-3-yl)-l-oxido-tetrahydro-lH-lλ4- thien-1-ylidenecyanamide (3).
Figure imgf000016_0001
(A)
Figure imgf000016_0002
(A)
To a suspension of thiourea (1.2 g, 16 mmol) in EtOH (25 mL) was added a solution of 3-chloromethyl-6-(trifluoromethyl)pyridine in EtOH (10 mL). The suspension was stirred at room temperature for 2 days, during which a white precipitate formed. The precipitate was filtered to give the desired amidine hyrdochloride as a white solid (2.4 g, 58 percent). Mp = 186-188 0C. No further attempt was made to purify the product. 1H NMR (300 MHz, CDCl3) δ 8.9 (bs, 4H), 8.4 (s, IH), 7.6 (d, IH), 7.3 (d, IH), 4.2 (s, 2H); LC-MS (ELSD): mass calcd for C8H8FN3S [M+H]+ 236.05. Found 236.01.
(B)
Figure imgf000017_0001
To a solution of amidine hydrochloride (A) (1.8 g, 6.8 mmol) in H2O (12 mL) at 10 0C was added I O N NaOH (0.68 mL, 6.8 mmol), which resulted in the formation of a white precipitate. The suspension was heated at 100 0C for 30 min, then cooled back down to 10 0C. Additional IO N NaOH (0.68 mL, 6.8 mmol) was then added, followed by l-bromo-3- chloropropane (0.67 mL, 6.8 mmol) all at once. The reaction was stirred at room temperature overnight, then extracted with CH2Cl2. The combined organic layers were washed with brine, dried over Na2SO4 and concentrated to furnish the sulfide (B) as a colorless oil (1.7 g, 96 percent). No further attempt was made to purify the product. 1H NMR (300 MHz, CDCl3) δ 8.6 (s, I H), 7.8 (d, IH), 7.6 (d, IH), 3.8 (s, 2H), 3.6 (t, 2H), 2.6 (t, 2H), 2.0 (quint, 2H).
(C)
Figure imgf000017_0002
(B) (C)
To a suspension of potassium tert-butoxide (1.5 g, 13 mmol) in THF (12 mL) was added HMPA (1.7 mL, 10 mmol) followed by a solution of sulfide (B) (1.8 g, 6.7 mmol) in THF (3 mL) dropwise. The reaction was allowed to stir at room temperature overnight, followed by concentration and purification by chromatography (Biotage, 40 percent EtOAc/hexanes) to furnish cyclized product (C) as an orange oil (230 mg, 15 percent). 1H NMR (300 MHz, CDCl3) δ 8.7 (s, IH), 8.0 (d, IH), 7.6 (d, IH), 4.6 (dd, IH), 3.2 (m, IH), 3.1 (m,lH), 2.5 (m, I H), 2.3 (m, IH), 2.1-1.9 (m, 2H).
(D)
Figure imgf000018_0001
(C) (D)
To a solution of sulfide (C) (230 mg, 0.99 mmol) and cyanamide (83 mg, 2.0 mmol) in CH2Cl2 (5 mL) at 0 0C was added iodobenzenediacetate (350 mg, 1.1 mmol) all at once. The reaction was stirred for 3 hr, then concentrated and the crude product purified by chromatography (chromatotron, 50 percent acetone/hexanes) to furnish the sulfilimine (D) as an orange oil (150 mg, mixture of diastereomers, 56 percent). 1H NMR (300 MHz, CDCl3) δ 8.8 (s, IH), 7.9 (d,lH), 7.8 (d, I H), 4.8 (dd, I H), 3.5 (m, 2H), 2.9-2.7 (m, 2H), 2.6 (m, IH), 2.3 (m, IH).
(E)
Figure imgf000018_0002
(D) (3) To a solution of mCPBA (80 percent, 180 mg, 0.82 mmol) in EtOH (3 mL) at 0 0C was added a solution OfK2CO3 (230 mg, 1.7 mmol) in H2O (1.5 mL). The solution was stirred for 20 min, then a solution of sulfilimine (D) (150 mg, 0.55 mmol) in EtOH (2 mL) was added all at once. The reaction was stirred at 0 0C for 45 min, after which the solvent was decanted into a separate flask and concentrated to give a white solid. The solid was slurried in CHCl3, filtered, and concentrated to furnish pure sulfoximine (3) as a colorless oil (72 mg, 44 percent). 1H NMR (300 MHz, CDCl3) δ (1.5:1 mixture of diastereomers) 8.8 (s, 2H), 8.0 (d, 2H), 7.8 (d, 2H), 4.7 (q, IH), 4.6 (q, IH), 4.0-3.4 (m, s, 4H), 3.0-2.4 (m, 8 H); LC-MS (ELSD): mass calcd for CI 1HHF3N3OS [M+H]+ 290.06. Found 289.99.
Example III. Preparation of (l-{6-rchloro(difluoro)methyl1pyridin-3-yl)ethvπ(methyl)- oxido-λ4-sulfanylidenecvanamide (4).
Figure imgf000019_0001
(A)
Figure imgf000019_0002
(3E)-l-Chloro-4-ethoxy-l,l-difluorobut-3-en-2-one (7.36 g, 40 mmol) was dissolved in dry toluene (40 mL) and treated with 3-dirnethylaminoacrylonitrile (4.61 g, 48 mmol) at room temperature. The solution was heated at 100 0C for 3.5 hr. The solvent was then removed under reduced pressure and the remaining mixture was re-dissolved in DMF (20 mL), treated with ammonium acetate (4.62 g, 60 mmol) and stirred at room temperature overnight. Water was added to the reaction mixture and the resulting mixture was extracted with ether-CH2CH2 (1 : 2, v/v) twice. The combined organic layer was washed with brine, dried, filtered and concentrated. The residue was purified on silica gel to give 3.1 g of 6- [chloro(difluoro)methyl]nicotinonitrile (A) as light colored oil in 41 percent yield. GC-MS: mass calcd for C7H3ClF2N2 [M]+ 188. Found 188.
(B)
Figure imgf000020_0001
6-[chloro(difluoro)methyl]nicotinonitrile (A) (3.0 g 15.8 mmol) was dissolved in anhydrous ether (25 mL) and cooled in an ice-water bath. A solution of 3 M of methylmagnesium bromide in hexane (6.4 mL, 19 mmol) was added through a syringe. After the addition was over, the mixture was stirred at 0 0C for 5 hr and then at room temperature for 10 hr. The reaction was quenched slowly with 1 N citric acid aqueous solution at 0 0C and the resulting mixture was stirred at room temperature for 1 hr. The pH was adjusted back to pH 7 with saturated NaHCO3 aqueous solution. The two phases were separated and the aqueous phase was extracted with ethyl acetate twice. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, and concentrated. The remaining mixture was purified on silica gel eluted with 15 percent acetone in hexane to give 0.88 g of the desired product l-{6-[chloro(difluoro)methyl]pyridin-3-yl}-ethanone (B) as brownish oil in 30 percent yield. GC-MS: mass calcd for C8H6ClF2NO [M]+ 205. Found 205. (C)
Figure imgf000021_0001
(B) (C)
To a solution of l-{6-[chloro(difluoro)methyl]pyridin-3-yl}ethanone (B) (0.85 g, 4.14 mmol) in MeOH (10 mL) at 0 0C was added NaBH4 (0.16 g, 4.14 mmol). The mixture was stirred for 30 min and 2 M HCl aqueous solution was added until pH reached 7. Solvent was removed under reduced pressure and the remaining mixture was extracted with CH2Cl2 (2 x 50 mL). The combined organic layer was dried over anhydrous Na2SO4, filtered, concentrated, and dried in vacuo to give 0.798 g of analytically pure l-{6- [chloro(difiuoro)rnethyl]-pyridin-3-yl}ethanol (C) on GC-MS as a light yellow oil in 93 percent yield. GC- MS: mass calcd for C8H6ClF2NO [M]+ 207. Found 207.
(D)
Figure imgf000021_0002
To a solution of l-{6-[chloro(difluoro)methyl]-pyridin-3-yl}ethanol (0.78 g, 3.77 mmol) in CH2Cl2 (40 mL) was added thionyl chloride (0.54 mL, 7.54 mmol) dropwise at room temperature. After lhr, the reaction was quenched slowly with saturated NaHCO3 aqueous solution and the two phases were separated. The organic layer was dried over Na2SO4, filtered, concentrated, and dried in vacuum to give 0.83 g of the crude 2- [chloro(difluoro)methyl]-5-(l-chloroethyl)pyridine (D) as brown oil in 98 percent yield, which was directly used for the next step reaction. GC-MS: mass calcd for C8H7Cl2F2N [M]+ 225. Found 225.
(E)
Figure imgf000022_0001
(D) (E)
To a solution of 2-[chloro(difluoro)methyl]-5-(l-chloroethyl)pyridine (D) (0.81 g, 3.6 mmol) in ethanol (10 mL) was added sodium thiomethoxide (0.52 g, 7.4 mmol) under stirring in one portion at 0 0C. After 10 min, the mixture was allowed to warm to room temperature and stirred overnight. The solvent ethanol was then removed under reduced pressure and the residue was re-taken into ether/CH2Cl2 and brine. The two phases were separated and the organic layer was extracted with CH2Cl2 one more time. The combined organic layer was dried over anhydrous Na2SO4, filtered, concentrated, purified on silica gel using 5 percent ethyl acetate in hexane to give 0.348 g of the 2-[chloro(difiuoro)methyl]-5-[l- (methylthio)ethyljpyridine (E) in 40 percent yield GC-MS: mass calcd for C9Hi0CIF2NS [M]+ 237. Found 237.
(F)
Figure imgf000023_0001
To a stirred solution of 2-[chloro(difluoro)methyl]-5-[l-(methylthio)- ethyl]pyridine (E) (0.32 g, 1.35 mmol) and cyanamide (0.058 g, 1.35 mmol) in THF (7 mL) was added iodobenzene diacetate (0.44 g, 1.35 mmol) in one portion at 0 0C and the resulting mixture was stirred at this temperature for lhr and then at room temperature for 2 hr. The solvent was then removed under reduced pressure and the resulting mixture was dissolved in CH2Cl2, washed with half-saturated brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel using 50 percent acetone in hexane to give 0.175 g of (l-{6-[chloro- (difluoro)methyl]pyridin-3-yl}ethyl)(methyl)- λ4-sulfanylidenecyanamide (F) as light-yellow oil in 48 percent yield. 1H NMR (300 MHz, CDCl3) δ 8.7 1 (d, J= 1.8 Hz, IH), 7.91 (dd, J = 8.4, 1.8 Hz, IH) 7.78 (d, J= 8.4 Hz, IH), 4.42 (q, J= 6.9 Hz, IH), 2.64 (s, 3H), 1.92 (d, J = 6.9 Hz, 3H); LC-MS: mass calcd for Ci0H I0CIF2N3S [M+l]+ 278. Found 278.
(G)
Figure imgf000023_0002
To a stirred solution of (l-{6-[chloro(difluoro)methyl]pyridin-3-yl}ethyl)-(methyl)- λ4-sulfanylidenecyanamide (F) (0.16 g, 0.6 mmol) in ethanol (10 mL) was added 20 percent potassium carbonate aqueous solution (1.24 g, 1.8 mmol) at 0 0C under stirring. After 10 min stirring, 80 percent mCPBA (0.19 g, ca 0.9 mmol) was added to the mixture, which was stirred at 0 0C for 2 hr after which the reaction was quenched with a spatula of solid sodium thiosulfate. Most of the solvent ethanol was removed under reduced pressure and an aqueous saturated NaHCO3 -brine (1:1, v/v) solution was added and the mixture extracted with chloroform three times. The combined organic layer was dried over Na2SO4, filtered and concentrated. The residue was purified on silica gel using 35-50 percent acetone in hexane as eluent to give 0.092 g of the product (l-{6-[chloro(difluoro)-methyl]pyridin-3- yl}ethyl)(methyl)oxido-λ4-sulfanylidenecyanamide (4) as colorless oil in 57 percent yield. 1H NMR (300 MHz, CDCl3) δ 8.79 (s, IH), 8.09 (d, J= 8.1 Hz, IH), 7.80 (d, J= 8.1 Hz, IH), 4.73 (q, J= 7.2 Hz, IH), 3.16 and 3.11 (2 s, 3H, a mixture of two diastereomeric α-CH3 groups between the sulfoximine and the pyridine tail), 2.00 (d, J= 7.2 Hz, 3H); LC-MS: mass calcd for Ci0H,oClF2N3OS [M-I]+ 292. Found 292.
Example IV. Preparation of [l-(6-trichloromethylpyridin-3-yl)ethyl1(methyl)-oxido- λ4- sulfanylidenecyanamide (5).
(5)
(A)
Figure imgf000024_0002
A mixture of S-ethylpyridine^-carboxylic acid (1.98 g, 13 minol), phenyl- phosphonic dichloride (2.8 g, 14.3 mmol), phosphorus pentachloride (7.7 g, 32 mmol) was stirred and slowly heated. Once a clear yellow liquid was formed, the mixture was heated to reflux overnight. After cooling, the volatiles were removed under reduced pressure. The residue was carefully poured into saturated sodium carbonate aqueous solution cooled in an ice-water bath. The aqueous phase was then extracted with CH2Cl2 two times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and partially purified on silica gel eluted with 10 percent EtOAc in hexane to give 2.7 g of crude product containing both 5-ethyl-2-(trichloromethyl)pyridine and 5-(I- chloro-ethyl)-2-(trichloromethyl)pyridine in an approximate 3: 1 ratio (GC data, masses calcd for C8H8Cl3N and C8H7Cl4N [M]+ 223 and 257 respectively. Found 223 and 257 respectively). A mixture of the above-mentioned crude product (2.6 g) in carbon tetrachloride (100 mL) was then treated with 80 percent of N-bromosuccinimide (1.9 g, 1 1 mmol) and benzoylperoxide (0.66 g, 0.275 mmol) and then refluxed overnight. The solid was filtered off, the filtrate concentrated and the resulting residue purified on silica gel using 4 percent EtOAc in hexane to give 1.0 g of the desired product 5-(l-bromoethyl)-2- (trichloromethyl)pyridine (A) as a yellow solid. The combined yield for the two steps was 25 percent. GC-MS: mass calcd for C8H7BrCl3N [M-I-Cl]+ 266. Found 266.
(B)
Figure imgf000025_0001
A solution of 5-(l-bromoethyl)-2-(trichloromethyl)pyridine (A) (0.95 g, 3.14 mmol) in ethanol (15 mL) was treated with sodium thiomethoxide (0.44 g, 6.29 mmol) portionwise at 0 0C. The mixture was stirred at room temperature overnight. The solvent ethanol was then removed under a reduced pressure and the residue was re-taken into CH2Cl2 and brine. The two phases were separated and the organic layer was dried over anhydrous Na2SO4, filtered, concentrated. The residue was purified on silica gel using 5 percent EtOAc in hexane to give 0.57 g of the partially pure 5-[l-(methylthio)ethyl]-2-(trichloromethyl)pyridine (B) in 67 percent crude yield. GC-MS: mass calcd for C9H10Cl3NS [M]+ 269. Found 269.
(C)
Figure imgf000026_0001
To a stirred solution of 5-[l-(methylthio)ethyl]-2-(trichloromethyl)-pyridine (B) (0.55 g 2.3 mmol) and cyanamide (0.097 g, 2.3 mmol) in THF (7 mL) cooled to 0 0C was added iodobenzene diacetate (0.75 g, 2.3 mmol) in one portion. The resulting mixture was stirred at 0 0C for 1 hr and then at room temperature for 2 hr. The solvent was removed in vacuo and the resulting mixture was purified on silica gel using 50 percent acetone in hexane to give 0.254 g of (lE)-methyl{l-[6-(trichIoromethyl)pyridin-3-yl]ethyl}- λ4- sulfanylidenecyanamide (C) as an off-white solid in 40 percent yield. 1H NMR for the diastereomeric mixture (300 MHz, d6-acetone) δ 8.87 (s, IH), 8.21-8.25 (m, 2H), 4.65-4.76 (m, IH), 2.86-2.66 (m, 3H), 1.88-1.92 (m, 3H).
(D)
Figure imgf000027_0001
To a stirred solution of (lE)-methyl{ l-[6-(trichloromethyl)pyridin-3-yl]ethyl}-λ - sulfanylidenecyanamide (C) (0.20 g, 0.65 mmol) in ethanol (15 mL) was added 20 percent aqueous potassium carbonate solution (1.3 mL) at 0 0C, followed by addition of 80 percent mCPBA. The resulting mixture was stirred for 2 hr at 0 0C and then quenched with solid sodium thiosulfate. Most of the solvent was evaporated and 1 : 1 aqueous saturated NaHCO3- brine (v/v) was added and the mixture was extracted with chloroform three times. The combined organic layer was dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified on silica gel using 40 percent acetone in hexane to give 0.10 g of [l-(6- trichloromethylpyridin-3-yl)ethyl](methyl)-oxido- λ4-sulfanylidene-cyanamide (5) as colorless oil in 50 percent yield. 1H NMR (300 MHz, CDCl3) δ 8.83 (s, IH), 8.12-8.23 (m, I H), 5.15(q, IH), 3.37 and 3.28 (2 s, 3H, a mixture of two diastereomeric α-CH3 groups between the sulfoximine and the pyridine tail), 2.03 (d, 3H); LC-MS: mass calcd for Cio H12Cl3N3OS [M+l]+ 328. Found 328.
Example V. Preparation of [l-(6-difluorornethylpyridin-3-yl)ethyl1(methyl)-oxido-λ4-sulfa- nylidenecyanamide (6).
Figure imgf000028_0001
(6)
(A)
Figure imgf000028_0002
To a solution of 2-iodo-5-bromopyridine (18.4 g, 65 mmol) in THF (100 mL) at -15 0C was added isopropylmagnesium chloride (2M, 35 mL, 70 mmol) dropwise at a rate such that the temperature of the reaction did not exceed 0 0C. The reaction was stirred at -15 0C. for 1 h, then DMF (7.5 mL, 97 mmol) was added dropwise at a rate such that the temperature of the reaction did not exceed 0 0C. The reaction was stirred for 30 min, then warmed to room temperature for an additional 1 h. The reaction was cooled back down to 0 0C and 2 N HCl (80 mL) was added dropwise, maintaining the temperature below 20 0C. After stirring for 30 "min, 2 N NaOH was added until pH 7 was reached. The organic layer was then separated and the aqueous layer extracted with CH2Cl2 (3x). The combined organic layers were dried over MgSO4, concentrated and purified by flash chromatography (SiO2, 10% EtOAc/hexanes) to furnish 5-bromopyridine-2-carbaldehyde (A) as a white solid (7.3 g, 60 percent). 1H NMR (300 MHz, CDCl3) δ 10.0 (s, IH), 8.9 (s, IH), 8.0 (d, IH), 7.8 (d, IH). (B) jrγBr
Figure imgf000029_0001
(A) (B)
To a cooled solution of 5-bromopyridine-2-carbaldehyde (A) (7.0 g, 38 mmol) in CH2Cl2 (300 mL) at -78 0C was added diethylaminosulfur trifluoride (DAST, 10.8 mL, 83 mmol). The reaction was allowed to warm to room temperature over the course of 6 h, then it was quenched slowly with H2O, washed with saturated aqueous NaHCO3 and dried over Na2SO4. Concentration and purification by silica gel plug (CH2Cl2 eluent) furnished 5- bromo-2-difluoromethylpyridine (B) as brown crystals (5.3 g, 67 percent). 1H NMR (300 MHz, CDCI3) δ 8.8 (s, I H), 8.0 (d, I H), 7.6 (d, I H), 6.6 (t, I H).
(C)
Figure imgf000029_0002
(B) (C)
To a solution of 5-bromo-2-difluoromethylpyridine (B) (1.8 g, 8.6 mmol) in THF (40 mL) at 25 0C was added isopropylmagnesium chloride (2M, 8.6 mL, 17 mmol) dropwise.
The reaction was allowed to stir for 2 h, then DMF (660 μL, 8.6 mmol) was added and the reaction was stirred for an additional 22 h. The reaction was quenched with 2M HCl and basified with I M NaOH until pH 7 reached. The organic layer was separated and the aqueous layer was extracted with CH2Cl2. The combined organic layers were dried over Na2SO4, concentrated and purified by flash chromatography (10 percent EtOAc/hexanes) to furnish ό-difluoromethylpyridine-S-carbaldehyde (C) as an orange oil (320 mg, 24 percent).
(D)
Figure imgf000030_0001
(C) (D)
To a solution of ό-difluoromethylpyridine-S-carbaldehyde (C) (500 mg, 3.2 mmol) in MeOH (10 mL) at 0 0C was added NaBH4 (60 mg, 1.6 mmol). The reaction was allowed to stir for 30 min, then 2M HCl was added until pH 2 was reached. The resulting solution was extracted with CH2Cl2 (3x) and the combined organic layers dried over Na2SO4 and concentrated to furnish (6-difluoromethyl-pyridin-3-yl)methanol (D) as an orange oil (420 mg, 82 percent) which was used in the next step without further purification. 1H NMR (300 MHz, CDCl3) δ 8.6 (s, 1 H), 7.9 (d, 1 H), 7.6 (d, 1 H), 6.6 (t, 1 H), 4.8 (s, 2H).
(E)
Figure imgf000030_0002
(D) (E)
To a solution of (6-difluoromethylpyridin-3-yl)methanol (D) (450 mg, 2.8 mmol) in CH2Cl2 (10 mL) at room temperature was SO2Cl (230 μL, 3.1 mmol). The reaction was allowed to stir for 1 h, then the reaction was quenched slowly with saturated aqueous NaHCO3. The aqueous phase was extracted with CH2Cl2 (3x) and the combined organic layers were dried over Na2SO4 and concentrated. The resulting solution was extracted with CH2Cl2 (3x) and the combined organic layers dried over Na2SO4 and concentrated to furnish S-chloromethyl^-difluoromethylpyridine (E) as a reddish brown oil (490 mg, 98%) which was used in the next step without further purification. 1H NMR (300 MHz, CDCl3) δ 8.7 (s, IH), 7.9 (d, IH), 7.6 (d, IH), 6.6 (t, IH), 4.6 (s, 2H).
(F)
Figure imgf000031_0001
(E) (F)
To a solution of sodium thiomethoxide (240 mg, 3.3 mmol) in EtOH (10 ml) at room temperature was added a solution of 5-chloromethyl-2-difluoromethylpyridine (E) (490 mg, 2.8 mmol) in EtOH (3 mL). The reaction was allowed to stir for 9 h, then the reaction was concentrated, taken up in Et2O, and washed with H2O. The organic phase was dried over Na2SO4 and concentrated to furnish 2-difluoromethyl-5-methylthiomethyl-pyridine (F) as an orange oil (422 mg, 81%) which was used in the next step without further purification. 1H NMR (300 MHz, CDCl3) δ 8.6 (s, IH), 7.8 (d, IH), 7.6 (d, IH), 6.6 (t, IH), 3.7 (s, 2H), 2.0 (s, 3H).
(G)
Figure imgf000031_0002
(F) (G)
[(6-Difluoromethylpyridin-3-yl)methyl](methyl)-oxido-λ4-sulfanylidenecyanamide (G) was synthesized from 2-difluoromethyl-5-methylthiomethylpyridine (F) in two steps as described in Examples I-B and I-C. Isolated as a white solid (51% yield). 1H NMR (300 MHz, CDCl3) δ 8.7 (s, IH), 8.0 (d, IH), 7.8 (d, IH), 6.7 (t, IH), 4.7 (dd, 2H), 3.2 (s, 3H); LC-
MS (ELSD): mass calcd for C9H10F2N3OS [M+H]+, 246. Found 246.
(H)
Figure imgf000032_0001
<G> (6) [l-(6-difluoromethylpyridin-3-yl)ethyl](methyl)-oxido-λ4-sulfanylidenecyanamide (6) was synthesized from [(6-difluoromethylpyridin-3-yl)methyl](methyl)-oxido-λ4-sulfan- ylidenecyanamide (G) in one step as described in Example I. Isolated as a colorless oil (74 percent yield) and a 1:1 mixture of diastereomers. 1H NMR (300 MHz, CDCb) δ (mixture of two diastereomers) 8.7 (s, 2H), 8.0 (d, 2H), 7.8 (d, 2H), 6.7 (t, 2H), 4.6 (q, 2H), 3.1 (s, 3H), 3.0 (s, 3H), 2.0 (d, 6H), LC-MS (ELSD): mass calcd for Ci0Hi2F2N3OS [M+H]+, 260. Found 260.
Example VI. Preparation of ri-(6-pentafluoroethylpyridin-3-yl)ethyl](methylVoxido-λ4- sulfanylidenecyanamide (7).
Figure imgf000032_0002
(7) (A)
Figure imgf000033_0001
(A)
(E)-l-Ethoxy-4,4,5,5,5-pentafluoropent-l -en-3-one (1.09 g, 5 mmol) in anhydrous ethyl ether (5 mL) was treated with l-((E)-3-methylthiobut-l-enyl)pyrrolidine (0.85 g, 5 mmol) in 2 mL dry ether at -15 0C over a period of 5 min and the reaction was continued for 20 min. Then the temperature was allowed to rise to room temperature and the reaction continued for 3 h. The solvent was removed under reduced pressure and the residue re- dissolved in anhydrous DMF (5 mL). Ammonium acetate (0.58 g, 7.5 mmol) was added and the mixture stirred at room temperature over a weekend. Water was added and mixture extracted with ether three times. The combined organic layer was washed with brine, dried over anhydrous Na2SO4, filtered, concentrated, and purified on silica gel eluted with 8% EtOAc in hexane (v/v) to give 0.16 g of the desired 5-(l-methylthioethyl)-2- pentafluoroethylpyridine (A) as brownish colored oil in 12 percent yield. GC-MS: mass calcd for Ci0Hi ,F2N3S [M]+ 271. Found 271.
(B)
Figure imgf000033_0002
(A) (B) To a stirred solution of the 5-(l-methylthioethyl)-2-pentafluoro-ethylpyridine (A) (0.16 g, 0.6 mmol) and cyanamide (0.025 g, 0.6 mmol) in THF (3 mL) cooled to 0 0C was added iodobenzene diacetate (0.19 g, 0.6 mmol) in one portion and the resulting mixture was stirred at 0 0C for 2 h and then at room temperature overnight. The solvent was removed in vacuo and the resulting mixture was suspended in brine-saturated NaHCO3 (9: 1), which was then extracted with CH2Cl2-EtOAc (1 : 1, v/v) two times. The combined organic layer was dried over Na2SO4, filtered, concentrated, and dried to give 0.16 g of (l-{6- [pentafluoroethyl]pyridin-3-yl}ethyl)(methyl)-λ4-sulfanylidenecyanamide (B) as a brownish oil in 85 percent yield. LC-MS: mass calcd for CnH10F5N3S [M]+ 31 1.28. Found [M-I]+ 309.84. (C)
Figure imgf000034_0001
To a stirred solution of the 80 percent 3-chloroperoxybenzoic acid (0.17 g, ca 0.8 mmol) in ethanol (3 mL) cooled to 0 0C was added 20 percent aqueous potassium carbonate (1.0 mL, 1.5 mmol) and the resulting mixture was stirred at 0 0C for 20 min. Then (1 -
{6[pentafluoro-ethyl]pyridin-3-yl}ethyl)(methyl)-λ4-sulfanylidenecyanamide (B) was added at once and the mixture was stirred at 0 0C for 1 h. The reaction was quenched with a small spatula of solid sodium thiosulfate. Most of the solvent was evaporated and brine solution was added and the mixture extracted with CH2Cl2 three times. The combined organic layer was dried over Na2SO4, filtered and concentrated and the residue was purified on silica gel using 10% acetone in CH2Cl2 (v/v) to give 0.089 g of [l-(6-pentafluoroethylpyridin-3- yl)ethyl](methyl)-oxido-λ4-sulfanylidenecyanamide (7) as a white solid in 54% yield. LC- MS: mass calcd for COHI0F5N3OS [M]+ 327.28. Found [M-I]+ 325.83.
Example VII. Preparation of 2-trifluoromethyl-5-(l-{methyl(oxido)[oxido(oxo)hydrazono]- λ4-sulfanyl}ethyr>pyridine (8).
Figure imgf000035_0001
(8)
(A)
Figure imgf000035_0002
To a solution of 5-(l-methylthioethyl)-2-trifluoromethylpyridine (2.0 g, 9 mmol) in CHCl3 (20 mL) at 0 0C was added solution of mCPBA (2.1 g, 10 mmol) in CHCl3 (25 mL) over the course of 1.5 h. The solution was stirred an additional 2 h, then it was concentrated and purified by flash chromatography (10 percent MeOH/CH2Cl2) to furnish 5- (lmethylsulfinyl-ethyl)-2-trifiuoromethylpyridine (A) as a yellow oil (710 mg, 33 percent) and a ~2: 1 mixture of diastereomers. 1H NMR (300 MHz, CDCl3) δ (major diastereomer) 8.7 (s, IH), 7.8 (d, IH), 7.7 (d, IH), 4.0 (q, lH), 2.4 (s, 3H), 1.75 (d, 3H); (minor diastereomer) 8.6 (s, IH), 7.9 (d, I H), 7.7 (d, IH), 3.8 (q, I H), 2.3 (s, 3H), 1.8 (d, 3H); LC-MS (ELSD): mass calcd for C9H, ,F3NOS [M+H]+, 238. Found 238. (B)
Figure imgf000036_0001
To a solution of 5-(l -methylsulfinylethyl)-2-trifluoromethylpyridine (A) (600 mg, 2.5 mmol) in CHCl3 (5 mL) at 0 0C was added sodium azide (260 mg, 4.0 mmol) and H2SO4 (1 mL). The reaction was warmed to 55 0C until gas evolution was observed, then it was cooled back down to room temperature overnight. The liquid was decanted into a separate flask and the residual syrup was dissolved in H2O, basified with Na2CO3 and extracted with CH2Cl2. The combined organic layers were dried over Na2SO4, concentrated and purified by flash chromatography to furnish 5-[l -(methylsulfonimidoyl)ethyl]-2-trifluoromethylpyridine (B) as a yellow oil (130 mg, 20 percent) and a -1 : 1 mixture of diastereomers. 1H NMR (300 MHz, CDCl3) δ (mixture of diastereomer) 8.8 (d, 2H), 8.0 (dd, 2H), 7.8 (d, 2H), 4.4 (m, 2H), 2.9 (s, 3H), 2.85 (s, 3H), 1.8 (m, 6H); LC-MS (ELSD): mass calcd for C9HnF3N2OS [M]+, 252. Found 252. (C)
00C 40 0C
Figure imgf000036_0003
Figure imgf000036_0002
(B) (8)
To a solution of 5-[l-(methylsulfonimidoyl)ethyl]-2-trifluoromethylpyridine (B) (100 mg, 0.4 mmol) in CH2Cl2 (2 mL) at 0 0C was added HNO3 (16 μL, 0.4 mmol) dropwise. To the resulting suspension was added acetic anhydride (750 μL) and concentrated H2SO4 (5 μL) and the mixture was heated to 40 0C. The suspension slowly became homogeneous over the course of 15 min. The solvent was then removed and the crude residue was dissolved in H2O. Solid Na2CO3 was added until pH 8 was reached and the aqueous phase was extracted with CH2Cl2. The combined organic layers were dried over Na2SO4, concentrated and purified by flash chromatography to furnish 2-trifiuoromethyl-5-(l-{methyl(oxido)- [oxido(oxo)hydrazono]-λ4-sulfanyl}ethyl)pyridine (8) as a yellow oil (22 mg, 19 percent) and a 1 : 1 mixture of diastereomers. 1H NMR (300 MHz, CDCl3) δ(mixture of diastereomers) 8.8 (d, 2H), 8.1 (m, 2H), 7.8 (m, 2H), 5.1 (q, IH), 5.0 (q, IH), 3.3 (s, 3H), 3.25 (s, 3H), 2.0 (m, 6H); LC-MS (ELSD): mass calcd for C9H1 1F3N3O3S [M+H]+, 298. Found 298.
Example VIII. Preparation of F6-(l J-difluoroethyl)pyridin-3-y0ethyl](methyl)-oxido-λ4-sul- fanylidenecyanamide (9).
Figure imgf000037_0001
(9)
(A)
Figure imgf000037_0002
(A)
To a solution 5-methyl-2-acetylpyridine (9.9 g, 73.3 mmol) in molecule sieves-dried
CH2Cl2 (150 mL) was added diethylamino sulfolnyltrifluoride (DAST) (25.8 g, 260 mmol) at room temperature and the mixture was stirred at room temperature overnight. More DAST (12 g, 74 mmol) was added and the reaction continued for two more days after which an additional DAST (3.8 g, 23 mmol) was added and the reaction continued for another 3 days. After the reaction was quenched slowly with saturated NaHCO3 at 0 0C, the organic phase was separated, dried over Na2SO4, filtered, and concentrated. The residue was purified on silica gel eluted with 8% EtOAc in hexane to give 3.91 g of 2-(l,l-difluoroethyl)-5- methylpyridine (A) as a light brownish oil in 34 percent yield. GC-MS: mass calcd for C8H9F2N [M]+ 157. Found 157.
(B)
Ph(COO) 2, NBS NaSMe
Figure imgf000038_0001
Figure imgf000038_0002
Figure imgf000038_0003
(A) (B)
A mixture of 2-(l,l-difluoroethyl)-5-methylpyridine (A) (2.0 g, 12.7 mmol), N- bromosuccinimide (2.2 g, 12.7 mmol) and benzoylperoxide (0.15 g, 0.63 mmol) in carbon tetrachloride (100 mL) was refluxed overnight. After the solid was removed by filtration, the filtrate was concentrated. The residue was re-dissolved in ethanol (40 mL) and sodium thiorhethoxide (1.33 g, 19 mmol) was added at room temperature and stirred for 3 h. The solvent was removed under reduced pressure and the remaining mixture was dissolved in CH2Cl2 and water. After separation, the organic layer was dried over Na2SO4, filtered and concentrated. The crude product 2-(l,l-difluoroethyl)-5-methylthiomethyl-pyridine (B) was 94 percent pure on GC/MS, which was used directly for the next reaction without further purification. GG-MS: mass calcd for C9HnF2NS [M]+ 203. Found 203. (C)
Figure imgf000039_0001
(B) (C)
To a stirred solution of 2-(l,l-difluoroethyl)-5-methylthiomethylpyridine (B) (1.22 g. 6.0 mmol) and cyanamide (0.25 g, 6.0 mmol) in THF (7 mL) cooled to 0 0C was added iodobenzene diacetate (1.93 g, 6.0 mmol) in one portion and the resulting mixture was stirred at 00C for 1 h and then at room temperature for 2 h. The solvent was removed in vacuo and the resulting mixture was purified on silica gel using 60 percent acetone in hexane (v/v) to give 1.22 g of [(6-(l,l-difluoroethylpyridin-3-yl)methyl](methyl)-λ4-sulfanylidenecyanamide (C) (84 percent yield) as brownish oil which turned into a brownish solid after standing in the refrigerator overnight. LC-MS: mass calcd for Ci0HnF2N3S [M]+ 243.28. Found [M+l]+ 244.11.
(D)
Figure imgf000039_0002
To a 100 ml round bottom flask equipped with magnetic stirrer, addition funnel, and thermometer was charged the sodium periodate (0.95 g, 4.44 mmol) and water (12 mL). After the solid had dissolved, 15 mL Of CH2Cl2 was added followed by the ruthenium trichloride hydrate (0.033 g, 0.15 mmol). [(6-(l,l-difluoroethylpyridin-3-yl)methyl](methyl)- λ4-sulfanylidenecyanamide (C) (0.72 g, 2.96 mmol) dissolved in 5 mL OfCH2Cl2 was added dropwise over a period of 30 min. The mixture was stirred rapidly at room temperature for 1.5 h and then filtered through a filtering paper to remove some insolubles. The mixture was then separated in separation funnel after ethyl acetate was added to facilitate the separation. The aqueous phase was extracted with CH2Cl2 twice. The combined organics was washed with brine, dried over dry Na2SO4, filtered, concentrated, and briefly purified on silica gel with 70 percent acetone in hexane to give 0.652 g of the desired product [(6-(1,I- difluoroethylpyridin-3-yl)methyl](methyl)-oxido λ4-sulfanylidenecyanamide (D) as a white solid in 87 percent yield. LC-MS: mass calcd for CI0HHF2N3OS [M]+ 259.28. Found [M+l]+ 260.02. (E)
Figure imgf000040_0001
(D) (9)
To a solution of [(6-(l,l-difluoroethylpyridin-3-yl)methyl](methyl)-oxido λ4- sulfanylidenecyanamide (D) (0.55 g, 2.0 mmol) and HMPA (0.09 mL, 0.55 mmol) in 20 mL anhydrous THF was added 0.5 M potassium bis(trimethylsilyl)amide in toluene (4.4 mL, 2.2 mmol) at -78 0C dropwise. After 45 min, iodomethane (0.14 mL, 2.2 mmol) was added in one portion via a syringe. Ten minutes later, the temperature was allowed to rise to 0 0C and mixture continued to stir for 1.5 h. The reaction was quenched with saturated aqueous NH4Cl, diluted with brine, extracted once each with EtOAc and CH2Cl2. The combined organic layer was dried over Na2SO4, filtered, and concentrated. The residue was purified by preparative HPLC to give 0.15 g of the desired [6-(l,l-difluoroethyl)pyridin-3- yl)ethyl](methyl)-oxido-λ4-sulfanylidenecyanamide (9) in 26 percent yield. LC-MS: mass calcd for C1 1H13F2N3OS [M]+ 273.31. Found [M+l]+ 274.21. Further details regarding Examples I-VIII and other related compounds are provided in U.S. Patent Application Publication 2007/0203191 Al, the contents of which are incorporated herein by reference in their entirety.
It should be appreciated that the compositions of this invention can include compounds that can exist as one or more stereoisomers.
The various stereoisomers include geometric isomers, diastereomers and enantiomers. Thus the compositions of the present invention can include compounds of racemic mixtures, individual stereoisomers and optically active mixtures. It will be appreciated by those skilled in the art that one stereoisomer may be more active than the others. Individual stereoisomers and optically active mixtures may be obtained by selective synthetic procedures, by conventional synthetic procedures using resolved starting materials or by conventional resolution procedures.
As a more particular example regarding stereoisomers, the { 1 -[6-
(trifluoromethyl)pyridin-3-yl]ethyl}(methyl)oxido- λ4-sulfanylidenecyanamide compound described in Example I includes four separate stereoisomers. These four stereoisomers define two pairs of diastereomers, which for the purposes of this document are labeled as diastereomer groups A and B. Diastereomer group A is defined by {(/?)-l-[6- (triflouromethyl)pyridin-3-yl]ethyl}-(Λ)-(methyl)oxido-λ4-sulfanylidenecyanamide (A1) and { (S)- 1 -[6-(triflouromethyl)pyridin-3-yl]ethyl } -(S)-(methy I)oxido-λ4-sulfany lidenecyanam ide (A2) as represented below.
Diastereomer Group A
Figure imgf000042_0001
A1
{(Λ)-l-[6-(triflouromethyl)pyridin-3-yl]ethyl}-(/?)- (methyl)oxido-λ4-sulfanylidenecyanamide (A1)
Figure imgf000042_0002
A2
{ (S)- 1 -[6-(triflouromethyl)pyridin-3-y l]ethyl } -(S)- (methyl)oxido-λ4-sulfanylidenecyanamide (A2) Diastereomer group B is defined by {(/?)-l-[6-(triflouromethyl)pyridin-3-yl]ethyl}-
(5)-(methyl)oxido-λ4-sulfanylidenecyanamide (B1) and {(S)-l-[6-(triflouromethyl)pyridin-3- yl]ethyl}-(i?)-(methyl)oxido-λ4-sulfanylidenecyanamide (B2) as represented below.
Diastereomer Group B
Figure imgf000042_0003
B1
{(/?)-l-[6-(triflouromethyl)pyridin-3-yl]ethyl}-(S)- (methyl)oxido-λ4-sulfanylidenecyanamide (B1)
Figure imgf000043_0001
B2
{(5)-l-[6-(triflouromethyl)pyridin-3-yl]ethyl}-(Λ)-
(methyl)oxido-λ4-sulfanylidenecyanamide (B2)
Following the initial synthesis of the {l-[6-(trifluoromethyl)pyridin-3- yl]ethyl}(methyl)oxido- λ4-sulfanylidenecyanamide compound, diastereomer groups (A) and (B) are present in an approximate 1 :2 mixture. However, it is has been discovered that a conversion occurs between diastereomer groups (A) and (B) over time. For example, as set forth in Example IX below, the presence of diastereomer group A significantly increases as a result of exposure to increased temperatures over time, thereby presenting chemical and physical stability issues with respect to compositions including the { l-[6- (trifluoromethyl)pyridin-3-yl]ethyl}(methyl)oxido- λ4-sulfanylidenecyanamide compound. It has now been surprisingly discovered that the addition of small amounts of one or more organic acids or the salts thereof to a compound according to formula (I) substantially stabilizes the ratio between stereoisomers of the compound. In one form, the addition of organic acid maintains the ratio between two pairs of diastereomers. In one particular form, the organic acid includes at least one carboxylic acid functional group. As used herein, "carboxylic acid functional group" refers to a functional group having the structural formula
O -C-OH .
Examples of organic acids with at least one carboxylic acid functional group include carboxylic acid, formic acid, acetic acid, stearic acid, lactic acid, madelic acid, acrylic acid, oleic acid, benzoic acid, citric acid, salicylic acid, tartaric acid, succinic acid, pthalic acid, malonic acid, methacrylic acid, oxalic acid, ispcitric acid, crotonic acid, glyceric acid, p- Toluic acid, propanoic acid, heptanoic acid, butanoic acid, tartronic acid, nitroacetic acid, cyanoecetic acid, methoxyacetic acid, flouroacetic acid, chloroacetic acid, bromoacetic acid, dichloroacetic acid, glutaric acid, trichloroacetic acid, malic acid, hexanoic acid, trimellitic acid, trimesic acid, aconitic acid, tricarballylic acid and gallic acid. In another embodiment, the organic acid includes three carboxylic acid functional groups. Examples of organic acids with three carboxylic acid groups include citric acid, isocitric acid, trimellitic acid, trimesic acid, tricarballylic acid, aconitic acid and mixtures thereof.
As used herein, the "salt" of an organic acid refers to a compound in which the hydrogen of the acid is replaced by a metal or its equivalents while retaining the same organic moiety as the organic acid. Examples of metals that may be found in the salts include, but are not limited to, potassium, sodium, lithium, calcium, and aluminum. In one particular form, the salt is a citrate salt of citric acid. Non-limiting examples of citrate salts include sodium citrate, trisodium citrate dihydrate, sodium citrate dihydrate, potassium citrate, lithium citrate and mixtures thereof. In another form, the salt is a potassium hydrogen phthalate salt of phthalic acid. Still, it is contemplated that the salt may also be provided in one or more alternative forms. In one embodiment, a composition includes one compound or a mixture of compounds according to formula (I) and an organic acid or a salt thereof. In one form, the composition includes a ratio, by weight, between the compound according to formula (I) and the organic acid or salt thereof from about 300: 1 to about 10: 1. In another form, the ratio, by weight, between the compound according to formula (I) and the organic acid or salt thereof is from about 280: 1 to about 20: 1. In yet another form, the ratio, by weight, between the compound according to formula (I) and the organic acid or salt thereof is from about 260: 1 to about 30: 1. In another form, the ratio, by weight, between the compound according to formula (1) and the organic acid or salt thereof is from about 250: 1 to about 40: 1. In another form, the ratio, by weight, between the compound according to formula (I) and the organic acid or salt thereof is from about 245: 1 to about 45: 1. In yet another form, the ratio, by weight, between the compound according to formula (I) and the organic acid or salt thereof is from about 240: 1 to about 48:1. In another embodiment, a method includes providing a composition including a compound according to formula (I) in an isomeric mixture. More particularly, the isomeric mixture is defined by two pairs of diastereomers. In one form of this embodiment, the two pairs of diastereomers are present in a ratio of about 2:1. However, alternative values for the ratio between the diastereomers are contemplated. For example, the two pairs of diastereomers may be present in a ratio from about 1 :4 to about 12:1, from about 1 :2 to about 8:1 or from about 1:1 to about 4:1. The method further includes adding an organic acid or a salt thereof to the composition. In one aspect of this embodiment, adding the organic acid or salt thereof to the composition substantially maintains the ratio between the two pairs of diastereomers over a period of time. Non-limiting examples of the period of time that the ratio is maintained may be at least two weeks, at least one month, at least three months, at least six months or at least 12 months or longer. However, alternative values for the period of time that the ratio is maintained are contemplated. In another aspect of this embodiment, the ratio between the two pairs of diastereomers is substantially maintained for at least two weeks when the composition is in the presence of temperatures above ambient, which as used herein means between 18-28° C. As one non-limiting example, the temperature above ambient is in the range of 50-60° C, although alternative ranges are contemplated for the temperature above ambient as well as the period of time in which the ratios are maintained.
The compositions of this invention may also be provided with a phytologically- acceptable inert carrier in the form of sprays, topical treatments, gels, seed coatings, microcapsulations, systemic uptake, baits, eartags, boluses, foggers, fumigants aerosols, dusts and many others. Typically, formulations are applied as aqueous suspensions or emulsions. Such suspensions or emulsions are produced from water-soluble, water suspendable, or emulsifiable formulations which are (1) solids, usually known as wettable powders or water dispersible granules or (2) liquids, usually known as emulsifiable concentrates, aqueous emulsions, suspension concentrates and water suspended capsules containing the composition. As will be readily appreciated, any material to which the composition can be added may be used, provided they yield the desired utility without significant interference with the activity of the composition as a pesticide.
Wettable powders, which may be compacted, extruded or processed through a dispersion in water followed by spray drying or fluid bed agglomeration to form water dispersible granules, comprise an intimate mixture of the composition, an inert carrier and surfactants. The concentration of the composition in the wettable powder is usually from 10 percent to 90 percent by weight based on the total weight of the wettable powder, more preferably 25 wt. percent to 75 wt. percent. In the preparation of wettable powder formulations, the composition can be compounded with any finely divided solid, such as prophyllite, talc, chalk, gypsum, Fuller's earth, bentonite, attapulgite, starch, casein, gluten, montmorillonite clays, diatomaceous earths, purified silicates or the like. In such operations, the finely divided carrier and surfactants are typically blended with the composition and milled. ' Emulsifiable concentrates of the composition comprise a convenient concentration, such as from 5 wt. percent to 75 wt. percent of the composition, in a suitable liquid, based on the total weight of the concentrate. The composition is dissolved in an inert carrier, which is either water, a water miscible solvent, a water immiscible solvent, or a mixture thereof and emulsifiers. The concentrates may be diluted with water and oil to form spray mixtures in the form of oil-in-water emulsions. Useful organic solvents include aromatics, especially the high-boiling naphthalenic and olefinic portions of petroleum such as heavy aromatic naphtha. Other organic solvents may also be used, such as, for example, terpenic solvents, including rosin derivatives, aliphatic ketones, such as cyclohexanone, and complex alcohols, such as 2- ethoxyethanol. Emulsifiers which can be advantageously employed herein can be readily determined by those skilled in the art and include various nonionic, anionic, cationic and amphoteric emulsifiers, or a blend of two or more emulsifiers. Examples of nonionic emulsifiers useful in preparing the emulsifiable concentrates include the polyalkylene glycol ethers and condensation products of alkyl and aryl phenols, aliphatic alcohols, aliphatic amines or fatty acids with ethylene oxide, propylene oxides such as the ethoxylated alkyl phenols and carboxylic esters solubilized with the polyol or polyokyalkylene. Cationic emulsifiers include quaternary ammonium compounds and fatty amine salts. Anionic emulsifiers include the oil-soluble salts (e.g., calcium) of alkylaryl sulphonic acids, oil soluble salts or sulfated polyglycol ethers and appropriate salts of phosphated polyglycol ether. Representative organic liquids which can be employed in preparing the emulsifiable concentrates of the composition are the aromatic liquids such as xylene, propyl benzene fractions; or mixed naphthalene fractions, mineral oils, substituted aromatic organic liquids such as dioctyl phthalate; kerosene; dialkyl amides of various fatty acids, particularly the dimethyl amides of fatty glycols and glycol derivatives such as the n-butyl ether, ethyl ether or methyl ether of diethylene glycol, and the methyl ether of triethylene glycol and the like. Mixtures of two or more organic liquids may also be employed in the preparation of the emulsifiable concentrate. Preferred organic liquids include xylene, and propyl benzene fractions, with propylbenzene fractions being most preferred. Surface-active emulsifying agents are typically employed in liquid formulations and in an amount of from 0.1 to 20 percent by weight based on the combined weight of the emulsifying agent with the composition. The formulations comprising the composition of the present invention can also contain other compatible additives, for example, miticides, insecticides, plant growth regulators, other fungicides, and other biologically active compounds used in agriculture.
Aqueous suspensions comprise suspensions of the composition, dispersed in an aqueous vehicle at a concentration in the range from 5 to 50 weight percent, based on the total weight of the aqueous suspension. Aqueous suspensions are prepared by vigorously mixing the composition of the present invention, or its solution, into a vehicle comprised of water and surfactants chosen from the same types discussed above. Other components, such as inorganic salts and synthetic or natural gums, may also be added to increase the density and viscosity of the aqueous vehicle. Examples of aqueous suspensions include suspensions of oil droplets (EWs), solids (SCs), and capsules (CS's).
The composition can also be applied as granular formulations, which are particularly useful for applications to the soil. Granular formulations usually contain from 0.5 to 10 wt. percent, based on the total weight of the granular formulation of the composition, dispersed in an inert carrier which consists entirely or in large part of coarsely divided inert material such as attapulgite, bentonite, diatomite, clay or a similar inexpensive substance. Such formulations are usually prepared by diluting the composition in a suitable solvent and applying it to a granular carrier which has been preformed to the appropriate particle size, in the range of from 0.5 to 3 mm. A suitable solvent is a solvent in which the compound is substantially or completely soluble. Such formulations may also be prepared by making a dough or paste of the carrier and the composition and solvent, and crushing and drying to obtain the desired granular particle.
The composition of the present invention can also be applied as a water dispersible granule, or dry flowable formulation. Water dispersible granules typically contain from 10 to 70 percent of the composition, based on the total weight of the formulation. Such formulations are typically obtained through mixing and/or spraying the mixture onto a carrier with the addition of a dispersing and/or wetting agent, and combining with water to form a mixture suitable for further processing using well known granulation technologies, such as pan granulation, extrusion, spray-drying, fluid bed agglomeration, and the like. Dusts containing the composition can be prepared by intimately mixing the composition with a suitable dusty agricultural carrier, such as, for example, kaolin clay, ground volcanic rock, and the like. Dusts can suitably contain from 1 to 10 wt. percent of the composition, based on the total weight of the dust. Dusts may also be prepared by impregnating the composition onto a carrier in a similar manner to that described for granules above.
The formulations of the present invention may additionally contain adjuvant surfactants to enhance deposition, wetting and penetration of the composition onto the target crop and organism. These adjuvant surfactants may optionally be employed as a component of the formulation or as a tank mix. The amount of adjuvant surfactant will typically vary from 0.01 to 1.0 percent by volume, based on a spray-volume of water, preferably 0.05 to 0.5 volume percent. Suitable adjuvant surfactants include, but are not limited to ethoxylated nonyl phenols, ethoxylated synthetic or natural alcohols, salts of the esters or sulphosuccinic acids, ethoxylated organosilicones, ethoxylated fatty amines and blends of surfactants with mineral or vegetable oils.
Example IX. Stability of composition including { l-f6-(trifluoromethv0pyridin-3- yl]ethylHmethyl)oxido- λ -sulfanylidenecvanamide.
A composition (i) having a 1 liter total volume (~1 100 g total weight) was prepared by first adding deionized water to a clean beaker equipped with a mechanical stirrer. The following ingredients were then added to the beaker, in no particular, under continued stirring: 3.5 g of Agnique® DFM 1 12S, a silicon based defoamer available commercially from the Cognis Group, headquartered in Monheim, Germany; 20 g of Tersperse® 2500, a polymeric surfactant commercially available from Huntsman Performance Products, 10003 Woodloch Forest Drive, The Woodlands, TX 77380; 30 g of Morwet® D-360, a surfactant commercially available from Akzo Nobel Surfactants, 525 W. Van Buren St., Chicago, IL 60607; 20 g of Ethylan® NS 500 LQ, a surfactant commercially available from Akzo Nobel Surfactants, 525 W. Van Buren St., Chicago, IL 60607; 40 g of propylene glycol; 1 g of Proxel® GXL, a microbiostat solution commercially available from Arch Chemicals, Inc., 1955 Lake Drive, Suite 100, Smyrna, GA 30080. 240 g of { l-[6-(trifluoromethyl)pyridin-3- yl]ethyl}(methyl)oxido-λ4-sulfanylidenecyanamide was then added to the beaker, followed by the addition of 10 g of Avicel® CL-611, a stabilizer commercially available from FMC BioPolymer, 1735 Market Street, Philadelphia, PA 19103, and 2 g of Kelzan, a xanthan gum commercially available from CP Kelco, 1000 Parkwood Circle, Suite 1000, Atlanta, GA 30339. The ingredients were stirred until a homogeneous mixture' was obtained. The mixture was then milled with a bead mill down to an average particle size of 3-5 μm. The final formulation of composition (i) is set forth in Table 1.
Table 1 Composition (i)
Figure imgf000050_0001
Two 20 mL samples of composition (i) were collected and individually stored at room temperature and 54 0C for a period of two weeks in 1 oz. sealed glass jars. After two weeks, the samples were collected and assayed by chromatography to measure the ratio between diastereomer groups A and B of { l-[6-(trifluoromethyl)pyridin-3-yl]ethyl}(methyl)oxido-λ4- sulfanylidenecyanamide in composition (i). The results of the chromatography analysis are provided in Table 2.
Table 2
Diastereomer ratios of { l-[67(trifluoromethyl)pyridin-3-yl]ethyl}-
(methyl)oxido-λ4-sulfanylidenecyanamide in composition (i) after two weeks of storage.
Figure imgf000051_0001
Example X. Stability of compositions including { l-f6-(trifluoromethvDpyridin-3- yl1ethyl)(methv0oxido-λ4-sulfanylidenecvanamide and an organic acid or a salt thereof.
Compositions (ii)-(xii) each having a 1 liter total volume (~1100 g) were individually prepared in the manner set forth above with respect to Example IX. Each of compositions (ii)-(xii) included the ingredients of composition (i) and, with the exception of water, each ingredient was provided in the same amount. In contrast to the preparation of composition (i) however, a small amount of an organic acid or an organic acid salt was added to each of compositions (ii)-(xii) before the 240 g of { l-[6-(trifluoromethyl)pyridin-3- yl]ethyl}(methyl)oxido-λ4-sulfanylidenecyanamide, 10 g of Avicel® CL-61 1 and 2 g of Kelzan were added. The final formulations of compositions (ii)-(xii) are set forth in Table 3, with the specific organic acid/salt and the amount of same for each of compositions (ii)-(xii) being set forth in Table 4.
Table 3 Compositions (ii)-(xii)
Figure imgf000052_0001
Table 4 Or anic acids/salts of Com ositions (ii)-(xii
Figure imgf000052_0002
Two 20 mL samples of each of compositions (ii)-(xii) were collected and individually stored at 5 0C and 54 0C for a period of two weeks in 1 oz. sealed glass jars. After two weeks, the samples were collected and assayed by chromatography to measure the ratio between diastereomer groups A and B of {l-[6-(trifluoromethyl)pyridin-3-yl]ethyl}(methyl)oxido-λ4- sulfanylidenecyanamide in compositions (ii)-(xii). The results of the chromatography analysis are provided in Table 5, which also indicates the pH of each composition and the percent by weight, based on the total weight of the respective composition, of the { l-[6- (trifluoromethyl)pyridin-3-yl]ethyl}(methyl)oxido-λ4-sulfanylidenecyanamid compound.
Table 5
Figure imgf000053_0001
It should be appreciated that the foregoing Examples are for illustration purposes and are not intended to be construed as limiting the invention disclosed in this document to only the embodiments disclosed in these examples. For example, it is contemplated that the {l-[6- (trifluoromethyl)pyridin-3-yl]ethyl}(methyl)-xido-λ4-sulfanylidenecyanamide compound in compositions (ii)-(xii) could be replaced with one or a mixture of the compounds according to formula (I) or with an alternative organic acid or salt thereof. Similarly, it is contemplated that the compositions could be prepared with one or more co-ingredients in addition to or in lieu of those provided in the Examples.
Insecticide Utility The compositions disclosed in this document are useful for the control of invertebrates including insects. Therefore, the present invention also is directed to a method for inhibiting an insect which comprises applying an insect-inhibiting amount of the composition to a locus of the insect, to the area to be protected, or directly on the insect to be controlled. The compositions of the invention may also be used to control other invertebrate pests such as mites and nematodes.
The "locus" of insects or other pests is a term used herein to refer to the environment in which the insects or other pests live or where their eggs are present, including the air surrounding them, the food they eat, or objects which they contact. For example, insects which eat, damage or contact edible, commodity, ornamental, turf or pasture plants can be controlled by applying the compositions to the seed of the plant before planting, to the seedling, or cutting which is planted, the leaves, stems, fruits, grain, and/or roots, or to the soil or other growth medium before or after the crop is planted. Protection of these plants against virus, fungus or bacterium diseases may also be achieved indirectly through controlling sap-feeding pests such as whitefly, plant hopper, aphid and spider mite. Such plants include those which are bred through conventional approaches and which are genetically modified using modern biotechnology to gain insect-resistant, herbicide-resistant, nutrition-enhancement, and/or any other beneficial traits.
It is contemplated that the compositions might also be useful to protect textiles, paper, stored grain, seeds and other foodstuffs, houses and other buildings which may be occupied by humans and/or companion, farm, ranch, zoo, or other animals, by applying an active composition to or near such objects. Domesticated animals, buildings or human beings might be protected with the compositions by controlling invertebrate and/or nematode pests that are parasitic or are capable of transmitting infectious diseases. Such pests include, for example, chiggers, ticks, lice, mosquitoes, flies, fleas and heartworms. Nonagronomic applications also include invertebrate pest control in forests, in yards, along road sides and railroad right of way.
The term "inhibiting an insect" refers to a decrease in the numbers of living insects, or a decrease in the number of viable insect eggs. The extent of reduction accomplished by a composition depends, of course, upon the application rate of the composition, the particular composition used, and the target insect species. At least an inactivating amount should be used. The term "insect-inactivating amount" is used to describe the amount, which is sufficient to cause a measurable reduction in the treated insect population. Generally an amount in the range from about 1 to about 1000 ppm by weight active compound is used. For example, insects or other pests which can be inhibited include, but are not limited to:
Lepidoptera — Heliothis spp., Helicoverpa spp., Spodoptera spp., Mythimna unipuncta, Agrotis ipsilon, Earias spp., Euxoa auxiliaris, Trichoplusia ni, Anticarsia gemmatalis, Rachiplusia nu, Plutella xylostella, Chilo spp., Scirpophaga incertulas, Sesamia inferens, Cnaphalocrocis medinalis, Ostrinia nubilalis, Cydia pomonella, Carposina niponensis, Adoxophyes orana, Archips argyrospilus, Pandemis heparana, Epinotia aporema, Eupoecilia ambiguella, Lobesia botrana, Polychrosis viteana, Pectinophora gossypiella, Pieris rapae, Phyllonorycter spp., Leucoptera malifoliella, Phyllocnisitis citrella
Coleoptera — Diabrotica spp., Leptinotarsa decemlineata, Oulema oryzae, Anthonomus grandis, Lissorhoptrus oryzophilus, Agriotes spp., Melanotus communis, Popilliajaponica, Cyclocephala spp., Tribolium spp.
Homoptera -- Aphis spp., Myzus persicae, Rhopalosiphum spp., Dysaphis plantaginea, Toxoptera spp., Macrosiphum euphorbiae, Aulacorthum solani, Sitobion avenae, Metopolophium dirhodum, Schizaphis graminum, Brachycolus noxius, Nephotettix spp., Nilaparvata lugens, Sogatella furcifera, Laodelphax striatellus, Bemisia tabaci, Trialeurodes vaporariorum, Aleurodes proletella, Aleurothrixus floccosus, Quadraspidiotus perniciosus, Unaspis yanonensis, Ceroplastes rubens, Aonidiella aurantii
Hemiptera ~ Lygus spp., Eurygaster maura, Nezara viridula, Piezodorus guildingi, Leptocorisa varicornis, Cimex lectularius, Cimex hemipterus Thysanoptera ~ Frankliniella spp., Thrips spp., Scirtothrips dorsalis
Isoptera ~ Reticulitermes flavipes, Coptotermes formosanus, Reticulitermes virginicus, Heterotermes aureus, Reticulitermes hesperus, Coptotermes frenchii, Shedorhinotermes spp., Reticulitermes santonensis, Reticulitermes grassei, Reticulitermes banyulensis, Reticulitermes speratus, Reticulitermes hageni, Reticulitermes tibialis, Zootermopsis spp., Incisitermes spp., Marginitermes spp., Macrotermes spp., Microcerotermes spp., Microtermes spp.
Diptera ~ Liriomyza spp., Musca domestica, Aedes spp., Culex spp., Anopheles spp., Fannia spp., Stomoxys spp.
Hymenoptera ~ Iridomyrmex humilis, Solenopsis spp., Monomorium pharaonis, Atta spp., Pogonomyrmex spp., Camponotus spp., Monomorium spp., Tapinoma sessile, Tetramorium spp., Xylocapa spp., Vespula spp., Polistes spp.
Mallophaga (chewing lice)
Anoplura (sucking lice) ~ Pthirus pubis, Pediculus spp.
Orthoptera (grasshoppers, crickets) ~ Melanoplus spp., Locusta migratoria, Schistocerca gregaria, Gryllotalpidae (mole crickets).
Blattoidea (cockroaches) — Blatta orientalis, Blattella germanica, Periplaneta americana, Supella longipalpa, Periplaneta australasiae, Periplaneta brunnea, Parcoblatta pennsylvanica, Periplaneta fuliginosa, Pycnoscelus surinamensis,
Siphonaptera — Ctenophalides spp., Pulex irritans Acari ~ Tetranychus spp., Panonychus spp., Eotetranychus carpini, Phyllocoptruta oleivora, Aculus pelekassi, Brevipalpus phoencis, Boophilus spp., Dermacentor variabilis, Rhipicephalus sanguineus, Amblyomma americanum, Ixodes spp., Notoedres cati, Sarcoptes scabiei, Dermatophagoides spp. Nematoda ~ Dirofdaria immitis, Meloidogyne spp., Heterodera spp., Hoplolaimus columbus, Belonolaimus spp., Pratylenchus spp., Rotylenchus reniformis, Criconemella ornata, Ditylenchus spp., Aphelenchoides besseyi, Hirschmanniella spp.
The actual amount of composition to be applied to loci of insects and mites is not critical and can readily be determined by those skilled in the art in view of the examples above. In general, concentrations from 10 ppm to 5000 ppm by weight of compound are expected to provide good control. With many of the compounds, concentrations from 100 to 1500 ppm will suffice.
The locus to which a composition is applied can be any locus inhabited by an insect or mite, for example, vegetable crops, fruit and nut trees, grape vines, ornamental plants, domesticated animals, the interior or exterior surfaces of buildings, and the soil around buildings.
Because of the unique ability of insect eggs to resist toxicant action, repeated applications may be desirable to control newly emerged larvae, as is true of other known insecticides and acaricides. Systemic movement of compositions of the invention in plants may be utilized to control pests on one portion of the plant by applying the compositions to a different portion of it. For example, control of foliar-feeding insects can be controlled by drip irrigation or furrow application, or by treating the seed before planting. Seed treatment can be applied to all types of seeds, including those from which plants genetically transformed to express specialized traits will germinate. Representative examples include those expressing proteins toxic to invertebrate pests, such as Bacillus thuringiensis or other insecticidal proteins, those expressing herbicide resistance, such as "Roundup Ready®" seed, or those with "stacked" foreign genes expressing insecticidal proteins, herbicide resistance, nutrition-enhancement and/or any other beneficial traits. The composition can also be provided as an insecticidal bait formulation including attractants and/or feeding stimulants that may be used to increase efficacy of the compositions against insect pest in a device such as trap, bait station, and the like. The bait formulation is usually a solid, semi-solid (including gel) or liquid bait matrix including the stimulants and one or more non-microencapsulated or microencapsulated insecticides in an amount effective to act as kill agents.
The compositions of the present invention are often applied in conjunction with one or more other insecticides or fungicides or herbicides to obtain control of a wider variety of pests diseases and weeds. When used in conjunction with other insecticides or fungicides or herbicides, the presently claimed compositions can be formulated with the other insecticides or fungicides or herbicide, tank mixed with the other insecticides or fungicides or herbicides, or applied sequentially with the other insecticides or fungicides or herbicides.
Some of the insecticides that can be employed beneficially in combination with the compositions of the present invention include: antibiotic insecticides such as allosamidin and thuringiensin; macrocyclic lactone insecticides such as spinosad, spinetoram, and other spinosyns including the 21-butenyl spinosyns and their derivatives; avermectin insecticides such as abamectin, doramectin, emamectin, eprinomectin, ivermectin and selamectin; milbemycin insecticides such as lepimectin, milbemectin, milbemycin oxime and moxidectin; arsenical insecticides such as calcium arsenate, copper acetoarsenite, copper arsenate, lead arsenate, potassium arsenite and sodium arsenite; biological insecticides such as Bacillus popilliae, B. sphaericius, B. thurinigiensis subsp. aizawai, B. thuringiensis subsp. kurstaki, B. thuriugiensis subsp. tenebrionis, Beauveria bassiana, Cydia pomonella granulosis virus, Douglas fir tussock moth NPV, gypsy moth NPV, Helicoverpa zea NPV, Indian meal moth granulosis virus, Metarhizium anisopliae, Nosema locustae, Paecilomyces fumosoroseus, P. lilacinus, Photorhabdus luminescens, Spodoptera exigua NPV, trypsin modulating oostatic factor, Xenorhabdus nematophilus, and X. bovienii; plant incorporated protectant insecticides such as Cry IAb, Cry IAc, Cry IF, Cry IA.105, Cry2Ab2, Cry3A, mir Cry3A, Cry3Bbl, Cry34, Cry35, and VIP3A; botanical insecticides such as anabasine, azadirachtin, d-limonene, nicotine, pyrethrins, cinerins, cinerin I, cinerin II, jasmolin I, jasmolin II, pyrethrin I, pyrethrin II, quassia, rotenone, ryania and sabadilla; carbamate insecticides such as bendiocarb and carbaryl; benzofuranyl methylcarbamate insecticides such as benfuracarb, carbofuran, carbosulfan, decarbofuran and furathiocarb; dimethylcarbamate insecticides dimitan, dimetilan, hyquincarb and pirimicarb; oxime carbamate insecticides such as alanycarb, aldicarb, aldoxycarb, butocarboxim, butoxycarboxim, methomyl, nitrilacarb, oxamyl, tazimcarb, thiocarboxime, thiodicarb and thiofanox; phenyl methylcarbamate insecticides such as allyxycarb, aminocarb, bufencarb, butacarb, carbanolate, cloethocarb, dicresyl, dioxacarb, EMPC, ethiofencarb, fenethacarb, fenobucarb, isoprocarb, methiocarb, metolcarb, mexacarbate, promacyl, promecarb, propoxur, trimethacarb, XMC and xylylcarb; dinitrophenol insecticides such as dinex, dinoprop, dinosam and DNOC; fluorine insecticides such as barium hexafluorosilicate, cryolite, sodium fluoride, sodium hexafluorosilicate and
Figure imgf000059_0001
insecticides such as amitraz, chlordimeform, formetanate and formparanate;/w/w/gαm insecticides such as acrylonitrile, carbon disulfide, carbon tetrachloride, chloroform, chloropicrin, para-dichlorobenzene, 1,2-dichloropropane, ethyl formate, ethylene dibromide, ethylene dichloride, ethylene oxide, hydrogen cyanide, iodomethane, methyl bromide, methylchloroform, methylene chloride, naphthalene, phosphine, sulfuryl fluoride and tetrachloroethane; inorganic insecticides such as borax, calcium polysulfide, copper oleate, mercurous chloride, potassium thiocyanate and sodium thiocyanate; chitin synthesis inhibitors such as bistrifluron, buprofezin, chlorfluazuron, cyromazine, diflubenzuron, flucycloxuron, flufenoxuron, hexaflumuron, lufenuron, novaluron, noviflumuron, penfluron, teflubenzuron and triflumuron;7wvem/e hormone mimics such as epofenonane, fenoxycarb, hydroprene, kinoprene, methoprene, pyriproxyfen and tήprene; juvenile hormones such as juvenile hormone I, juvenile hormone II and juvenile hormone III; moulting hormone agonists such as chromafenozide, halofenozide, methoxyfenozide and tebufenozide; moulting hormones such as α-ecdysone and ecdysterone; moulting inhibitors such as diofenolan; precocenes such as precocene I, precocene II and precocene III; unclassified insect growth regulators such as dicyclanil; nereistoxin analogue insecticides such as bensultap, cartap, thiocyclam and thiosultap; nicotinoid insecticides such as flonicamid; nitroguanidine insecticides such as clothianidin, dinotefuran, imidacloprid and thiamethoxam; nitromethylene insecticides such as nitenpyram and nithiazine; pyridylmethylamine insecticides such as acetamiprid, imidacloprid, nitenpyram and thiacloprid; organochlorine insecticides such as bromo-DDT, camphechlor, DDT, pp'-DDT, ethyl-DDD, HCH, gamma-HCH, lindane, methoxychlor, pentachlorophenol and TDE; cyclodiene insecticides such as aldrin, bromocyclen, chlorbicyclen, chlordane, chlordecoήe, dieldrin, dilor, endosulfan, endrin, HEOD, heptachlor, HHDN, isobenzan, isodrin, kelevan and mirex; organophosphate insecticides such as bromfenvinfos, chlorfenvinphos, crotoxyphos, dichlorvos, dicrotophos, dimethylvinphos, fospirate, heptenophos, methocrotophos, mevinphos, monocrotophos, naled, naftalofos, phosphamidon, propaphos, TEPP and tetrachlorvinphos; organothiophosphate insecticides such as dioxabenzofos, fosmethilan and phenthoate; aliphatic organothiophosphate insecticides such as acethion, amiton, cadusafos, chlorethoxyfos, chlormephos, demephion, demephion-O, demephion-S, demeton, demeton-O, demeton-S, demeton-methyl, demeton-O-methyl, demeton-S-methyl, demeton-S-methylsulphon, disulfoton, ethion, ethoprophos, PSP, isothioate, malathion, methacrifos, oxydemeton-methyl, oxydeprofos, oxydisulfoton, phorate, sulfotep, terbufos and thiometon; aliphatic amide organothiophosphate insecticides such as amidithion, cyanthoate, dimethoate, ethoate-methyl, formothion, mecarbam, omethoate, prothoate, sophamide and vamidothion; oxime organothiophosphate insecticides such as chlorphoxim, phoxim and phoxim-methyl; heterocyclic organothiophosphate insecticides such as azamethiphos, coumaphos, coumithoate, dioxathion, endothion, menazon, morphothion, phosalone, pyraclofos, pyridaphenthion and quinothion; benzothiopyran organothiophosphate insecticides such as dithicrofos and thicrofos; benzotriazine organothiophosphate insecticides such as azinphos-ethyl and azinphos-methyl; isoindole organothiophosphate insecticides such as dialifos and phosmet; isoxazole organothiophosphate insecticides such as isoxathion and zolaprofos; pyrazolopyrimidine organothiophosphate insecticides such as chlorprazophos and pyrazophos; pyridine organothiophosphate insecticides such as chlorpyrifos and chlorpyrifos-methyl; pjτ//mVΛ«e organothiophosphate insecticides such as butathiofos, diazinon, etrimfos, lirimfos, pirimiphos-ethyl, pirimiphos-methyl, primidophos, pyrimitate and tebupirimfos; quinoxaline organothiophosphate insecticides such as quinalphos and quinalphos-methyl; thiadiazole organothiophosphate insecticides such as athidathion, lythidathion, methidathion and prothidathion; triazole organothiophosphate insecticides such as isazofos and triazophos; phenyl organothiophosphate insecticides such as azothoate, bromophos, bromophos-ethyl, carbophenothion, chlorthiophos, cyanophos, cythioate, dicapthon, dichlofenthion, etaphos, famphur, fenchlorphos, fenitrothion fensulfothion, fenthion, fenthion-ethyl, heterophos, jodfenphos, mesulfenfos, parathion, parathion-methyl, phenkapton, phosnichlor, profenofos, prothiofos, sulprofos, temnephos, trichlormetaphos-3 and trifenofos; phosphloiate insecticides such as butonate and trichlorfon; phosphonothioate insecticides such as mecarphon; phenyl ethylphosplionotliioate insecticides such as fonofos and trichloronat; phenyl phenylphosphonothioate insecticides such as cyanofenphos, EPN and leptophos; phosphor amidate insecticides such as crufomate, fenamiphos, fosthietan, mephosfolan,phosfolan and pirimetaphos; phosphoramidothioate insecticides such as acephate, isocarbophos, isofenphos, methamidophos and propetamphos; phosphorodiamide insecticides such as dimefox, mazidox, mipafox and schradan; oxadiazine insecticides such as indoxacarb; phthalimide insecticides such as dialifos, phosmet and tetramethrin ; pyrazole insecticides such as acetoprole, ethiprole, fipronil, pyrafluprole, pyriprole, tebufenpyrad, tolfenpyrad and vaniliprole; pyrethroid ester insecticides such as acrinathrin, allethrin, bioallethrin, barthrin, bifenthrin, bioethanomethrin, cyclethrin, cycloprothrin, cyfluthrin, beta- cyfluthrin, cyhalothrin, gamma-cyhalothrin, lambda-cyhalothrin, cypermethrin, alpha- cypermethrin, beta-cypermethrin, theta-cypermethrin, zeta-cypermethrin, cyphenothrin, deltamethrin, dimefluthrin, dimethrin, empenthrin, fenfluthrin, fenpirithrin, fenpropathrin, fenvalerate, esfenvalerate, flucythrinate, fluvalinate, tau-fluvalinate, furethrin, imiprothrin, metofluthrin, permethrin, biopermethrin, transpermethrin, phenothrin, prallethrin, profluthrin, pyresmethrin, resmethrin, bioresmethrin, cismethrin, tefluthrin, terallethrin, tetramethrin, tralomethrin and
Figure imgf000062_0001
pyrethroid ether insecticides such as etofenprox, flufenprox, halfenprox, protrifenbute and silafluofen; pyrimidinamine insecticides such as flufenerim and pyrimidifen; pyrrole insecticides such as chlorfenapyr; tetronic acid insecticides such as spirodiclofen, spiromesifen and spirotetramat; thiourea insecticides such as diafenthiuron; urea insecticides such as flucofuron and sulcofuron; and unclassified insecticides such as AKD-3088, closantel, crotamiton, cyflumetofen, E2Y45, EXD, fenazaflor, fenazaquin, fenoxacrim, fenpyroximate, FKI- 1033, flubendiamide, HGW86, hydramethylnon, 1K1-2002, isoprothiolane, malonoben, metaflumizone, metoxadiazone, nifluridide, NNI-9850, NNI- 0101, pymetrozine, pyridaben, pyridalyl, Qcide, rafoxanide, rynaxypyr, SYJ- 159, triarathene and triazamate and any combinations thereof. Some of the fungicides that can be employed beneficially in combination with the compositions of the present invention include: 2-(thiocyanatomethylthio)-benzothiazole, 2- phenylphenol, 8-hydroxyquinoline sulfate, Ampelomyces, quisqualis, azaconazole, azoxystrobin, Bacillus subtilis, benalaxyl, benomyl, benthiavalicarb-isopropyl, benzylaminobenzene-sulfonate (BABS) salt, bicarbonates, biphenyl, bismerthiazol, bitertanol, blasticidin-S, borax, Bordeaux mixture, boscalid, bromuconazole, bupirimate, calcium polysulfide, captafol, captan, carbendazim, carboxin, carpropamid, carvone, chloroneb, chlorothalonil, chlozolinate, Coniothyrium minitans, copper hydroxide, copper octanoate, copper oxychloride, copper sulfate, copper sulfate (tribasic), cuprous oxide, cyazofamid, cyflufenamid, cymoxanil, cyproconazole, cyprodinil, dazomet, debacarb, diammonium ethylenebis-(dithiocarbamate), dichlofluanid, dichlorophen, diclocymet, diclomezine, dichloran, diethofencarb, difenoconazole, difenzoquat ion, difiumetorim, dimethomorph, dimoxystrobin, diniconazole, diniconazole-M,dinobuton, dinocap, diphenylamine, dithianon, dodemorph, dodemorph acetate, dodine, dodine free base, edifenphos, epoxiconazole, ethaboxam, ethoxyquin, etridiazole, famoxadone, fenamidone, fenarimol, fenbuconazole, fenfuram, fenhexamid, fenoxanil, fenpiclonil, fenpropidin, fenpropimorph, fentin, fentin acetate, fentin hydroxide, ferbam, ferimzone, fluazinam, fludioxonil, flumorph, fluopicolide, fluoroimide, fluoxastrobin, fluquinconazole, flusilazole, fiusulfamide, flutolanil, flutriafol, folpet, formaldehyde, fosetyl, fosetyl-aluminium, fuberidazole, furalaxyl, furametpyr, guazatine, guazatine acetates, G Y-81 , hexachlorobenzene, hexaconazole, hymexazol, imazalil, imazalil sulfate, imibenconazole, iminoctadine, iminoctadine triacetate, iminoctadine tris(albesilate), ipconazole, iprobenfos, iprodione, iprovalicarb, isoprothiolane, kasugamycin, kasugamycin hydrochloride hydrate, kresoxim-methyl, mancopper, mancozeb, maneb, mepanipyrim, mepronil, mercuric chloride, mercuric oxide, mercurous chloride, metalaxyl, mefenoxam, metalaxyl-M, metam, metam- ammonium, metam-potassium, metam-sodium, metconazole, methasulfocarb, methyl iodide, methyl isothiocyanate, metiram, metominostrobin, metrafenone, mildiomycin, myclobutanil, nabam, nitrothal-isopropyl, nuarimol, octhilinone, ofurace, oleic acid (fatty acids), orysastrobin, oxadixyl, oxine-copper, oxpoconazole fumarate, oxycarboxin, pefurazoate, penconazole, pencycuron, pentachlorophenol, pentachlorophenyl laurate, penthiopyrad, phenylmercury acetate, phosphonic acid, phthalide, picoxystrobin, polyoxin B, polyoxins, polyoxorim, potassium bicarbonate, potassium hydroxyquinoline sulfate, probenazole, prochloraz, procymidone, propamocarb, propamocarb hydrochloride, propiconazole, propineb, proquinazid, prothioconazole, pyraclostrobin, pyrazophos, pyributicarb, pyrifenox, pyrimethanil, pyroquilon, quinoclamine, quinoxyfen, quintozene, Reynoutria sachalinensis extract, silthiofam, simeconazole, sodium 2-phenylphenoxide, sodium bicarbonate, sodium pentachlorophenoxide, spiroxamine, sulfur, SYP-Z071, tar oils, tebuconazole, tecnazene, tetraconazole, thiabendazole, thifluzamide, thiophanate-methyl, thiram, tiadinil, tolclofos- methyl, tolylfluanid, triadimefon, triadimenol, triazoxide, tricyclazole, tridemorph, trifloxystrobin, triflumizole, triforine, triticonazole, validamycin, vinclozolin, zineb, ziram, zoxamide, Candida oleophila, Fusarium oxysporum, Gliocladium spp., Phlebiopsis gigantean, Streptomyces griseoviridis, Trichoderma spp., (RS)- N-(3,5-dichlorophenyl)-2- (methoxymethyl)-succinimide, 1 ,2-dichloropropane, 1 ,3-dichloro- 1 , 1 ,3,3-tetrafluoroacetone hydrate, l-chloro-2,4-dinitronaphthalene, l-chloro-2-nitropropane, 2-(2-heptadecyl-2- imidazolin-l-yl)ethanol, 2,3-dihydro-5-phenyl-l,4-dithi-ine 1,1,4,4-tetraoxide, 2- methoxyethylmercury acetate, 2-methoxyethylmercury chloride, 2-methoxyethylmercury silicate, 3-(4-chlorophenyl)-5-methylrhodanine, 4-(2-nitroprop-l-enyl)phenyl thiocyanateme: ampropylfos, anilazine, azithiram, barium polysulfide, Bayer 32394, benodanil, benquinox, bentaluron, benzamacril; benzamacril-isobutyl, benzamorf, binapacryl, bis(methylmercury) sulfate, bis(tributyltin) oxide, buthiobate, cadmium calcium copper zinc chromate sulfate, carbamorph, CECA, chlobenthiazone, chloraniformethan, chlorfenazole, chlorquinox, climbazole, copper bis(3-phenylsalicylate), copper zinc chromate, cufraneb, cupric hydrazinium sulfate, cuprobam, cyclafuramid, cypendazole, cyprofuram, decafentin, dichlone, dichlozoline, diclobutrazol, dimethirimol, dinocton, dinosulfon, dinoterbon, dipyrithione, ditalimfos, dodicin, drazoxolon, EBP, ESBP, etaconazole, etem, ethirim, fenaminosulf, fenapanil, fenitropan, fluotrimazole, furcarbanil, furconazole, furconazole-cis, furmecyclox, furophanate, glyodine, griseofulvin, halacrinate, Hercules 3944, hexylthiofos, ICIA0858, isopamphos, isovaledione, mebenil, mecarbinzid, metazoxolon, methfuroxam, methylmercury dicyandiamide, metsulfovax, milneb, mucochloric anhydride, myclozolin, N- S^-dichlorophenyl-succinimide, N-3-nitrophenylitaconimide, natamycin, N-ethylmercurio-4- toluenesulfonanilide, nickel bis(dimethyldithiocarbamate), OCH, phenylmercury dimethyldithiocarbamate, phenylmercury nitrate, phosdiphen, prothiocarb; prothiocarb hydrochloride, pyracarbolid, pyridinitril, pyroxychlor, pyroxyfur, quinacetol; quinacetol sulfate, quinazamid, quinconazole, rabenzazole, salicylanilide, SSF-109, sultropen, tecoram, thiadifluor, thicyofen, thiochlorfenphim, thiophanate, thioquinox, tioxymid, triamiphos, triarimol, triazbutil, trichlamide, urbacid, XRD-563, and zarilamid, and any combinations thereof.
Some of the herbicides that can be employed in conjunction with the compositions of the present invention include: amide herbicides such as allidochlor, beflubutamid, benzadox, benzipram, bromobutide, cafenstrole, CDEA, chlorthiamid, cyprazole, dimethenamid, dimethenamid-P, diphenamid, epronaz, etnipromid, fentrazamide, flupoxam, fomesafen, halosafen, isocarbamid, isoxaben, napropamide, naptalam, pethoxamid, propyzamide, quinonamid and tebutam; anilide herbicides such as chloranocryl, cisanilide, clomeprop, cypromid, diflufenican, etobenzanid, fenasulam, flufenacet, flufenican, mefenacet, mefluidide, metamifop, monalide, naproanilide, pentanochlor, picolinafen and propanil; arylalanine herbicides such as benzoylprop, flamprop and flamprop-M; chloroacetanilide herbicides such as acetochlor, alachlor, butachlor, butenachlor, delachlor, diethatyl, dimethachlor, metazachlor, metolachlor, S-metolachlor, pretilachlor, propachlor, propisochlor, prynachlor, terbuchlor, thenylchlor and xylachlor; sulfonanilide herbicides such as benzofluor, perfluidone, pyrimisulfan and profluazol; sulfonamide herbicides such as asulam, carbasulam, fenasulam and oryzalin; antibiotic herbicides such as bilanafos; benzoic acid herbicides such as chloramben, dicamba, 2,3,6-TBA and tricamba; pyrimidinyloxybenzoic acid herbicides such as bispyribac and pyriminobac; pyrimidinylthiobenzoic acid herbicides such as pyrithiobac; phthalic acid herbicides such as chlorthal; picolinic acid herbicides such as aminopyralid, clopyralid and picloram; quinolinecarboxylic acid herbicides such as quinclorac and quinmerac; arsenical herbicides such as cacodylic acid, CMA, DSMA, hexaflurate, MAA, MAMA, MSMA, potassium arsenite and sodium arsenite; benzoylcyclohexanedione herbicides such as mesotrione, sulcotrione, tefuryltrione and tembotrione; benzofuranyl alkylsulfonate herbicides such as benfuresate and ethofumesate; carbamate herbicides such as asulam, carboxazole chlorprocarb, dichlormate, fenasulam, karbutilate and terbucarb; carbanilate herbicides such as barban, BCPC, carbasulam, carbetamide, CEPC, chlorbufam, chlorpropham, CPPC, desmedipham, phenisopham, phenmedipham, phenmedipham-ethyl, propham and swep; cyclohexene oxime herbicides such as alloxydim, butroxydim, clethodim, cloproxydim, cycloxydim, profoxydim, sethoxydim, tepraloxydim and tralkoxydim; cyclopropylisoxazole herbicides such as isoxachlortole and isoxaflutole; dicarboximide herbicides such as benzfendizone, cinidon-ethyl, flumezin, flumiclorac, flumioxazin and flumipropyn; dinitroaniline herbicides such as benfluralin, butralin, dinitramine, ethalfluralin, fluchloralin, isopropalin, methalpropalin, nitralin, oryzalin, pendimethalin, prodiamine, profluralin and trifluralin; dinitrophenol herbicides such as dinofenate, dinoprop, dinosam, dinoseb, dinoterb, DNOC, etinofen and medinoterb; diplhenyl ether herbicides such as ethoxyfen; nitrophenyl ether herbicides such as acifluorfen, aclonifen, bifenox, chlomethoxyfen, chlornitrofen, etnipromid, fluorodifen, fluoroglycofen, fluoronitrofen, fomesafen, furyloxyfen, halosafen, lactofen,nitrofen, nitrofluorfen and oxyfluorfen; dithiocarbamate herbicides such as dazomet and metam; halogenated aliphatic herbicides such as alorac, chloropon, dalapon, flupropanate, hexachloroacetone, iodomethane, methyl bromide, monochloroacetic acid, SMA and TCA; imidazolinone herbicides such as imazamethabenz, imazamox, imazapic, imazapyr, imazaquin and imazethapyr; inorganic herbicides such as ammonium sulfamate, borax, calcium chlorate, copper sulfate, ferrous sulfate, potassium azide, potassium cyanate, sodium azide, sodium chlorate and sulfuric acid; nitrile herbicides such as bromobonil, bromoxynil, chloroxynil, dichlobenil, iodobonil, ioxynil and pyraclonil; organophosphorus herbicides such as amiprofos-methyl, anilofos, bensulide, bilanafos, butamifos, 2,4-DEP, DMPA, EBEP, fosamine, glufosinate, glyphosate and piperophos; phenoxy herbicides such as bromofenoxim, clomeprop, 2,4-DEB, 2,4-DEP, difenopenten, disul, erbon, etnipromid, fenteracol and trifopsime; phenoxyacetic herbicides such as 4-CPA, 2,4-D, 3,4-DA, MCPA, MCPA-thioethyl and 2,4,5-T; phenoxybutyric herbicides such as 4-CPB, 2,4-DB, 3,4-DB, MCPB and 2,4,5-TB; phenoxypropionic herbicides such as cloprop, 4-CPP, dichlorprop, dichlorprop-P, 3,4-DP, fenoprop, mecoprop and mecoprop-P; aryloxyphenoxypropionic herbicides such as chlorazifop, clodinafop, clofop, cyhalofop, diclofop, fenoxaprop, fenoxaprop-P, fenthiaprop, fluazifop, fluazifop-P, haloxyfop, haloxyfop-P, isoxapyrifop, metamifop, propaquizafop, quizalofop, quizalofop-P and trifop; phenylenediamine herbicides such as dinitramine and prodiamine; pyrazolyl herbicides such as benzofenap, pyrazolynate, pyrasulfotole, pyrazoxyfen, pyroxasulfone and topramezone; pyrazolyiplpietiyl herbicides such as fluazolate and pyraflufen; /τym/αz//;e herbicides such as credazine, pyridafol and pyridate; pyridazitiotte herbicides such as brompyrazon, chloridazon, dimidazon, flufenpyr, metflurazon, norflurazon, oxapyrazon and pydanon; pyridinie herbicides such as aminopyralid, cliodinate, clopyralid, dithiopyr, fluroxypyr, haloxydine, picloram, picolinafen, pyriclor, thiazopyr and triclopyr; pyrimidinediαmitie herbicides such as iprymidam and tioclorim; quaternary ammonium herbicides such as cyperquat, diethamquat, difenzoquat, diquat, morfamquat and paraquat; thiocarbamate herbicides such as butylate, cycloate, di- allate, EPTC, esprocarb, ethiolate, isopolinate, methiobencarb, molinate, orbencarb, pebulate, prosulfocarb, pyributicarb, sulfallate, thiobencarb, tiocarbazil, tri-allate and vernolate; thiocarbonate herbicides such as dimexano, EXD and proxan; thiourea herbicides such as methiuron; triazine herbicides such as dipropetryn, triaziflam and trihydroxytriazine; chlorotriazine herbicides such as atrazine, chlorazine, cyanazine, cyprazine, eglinazine, ipazine, mesoprazine, procyazine, proglinazine, propazine, sebuthylazine, simazine, terbuthylazine and trietazine; methoxytriazine herbicides such as atraton, methometon, prometon, secbumeton, simeton and terbumeton; methylthiotriazine herbicides such as ametryn, aziprotryne, cyanatryn, desmetryn, dimethametryn, methoprotryne, prometryn, simetryn and terbutryn; triazinone herbicides such as ametridione, amibuzin, hexazinone, isomethiozin, metamitron and metribuzin; triazole herbicides such as amitrole, cafenstrole, epronaz and flupoxam; triazolone herbicides such as amicarbazone, bencarbazone, carfentrazone, flucarbazone, propoxycarbazone, sulfentrazone and thiencarbazone-methyl; triazolopyrimidine herbicides such as cloransulam, diclosulam, florasulam, flumetsulam, metosulam, penoxsulam and pyroxsulam; uracil herbicides such as butafenacil, bromacil, flupropacil, isocil, lenacil and terbacil; 3-phenyluracils; urea herbicides such as benzthiazuron, cumyluron, cycluron, dichloralurea, diflufenzopyr, isonoruron, isouron, methabenzthiazuron, monisouron and nowron; phenylurea herbicides such as anisuron, buturon, chlorbromuron, chloreturon, chlorotoluron, chloroxuron, daimuron, difenoxuron, dimefuron, diuron, fenuron, fluometuron, fluothiuron, isoproturon, linuron, methiuron, methyldymron, metobenzuron, metobromuron, metoxuron, monolinuron, monuron, neburon, parafluron, phenobenzuron, siduron, tetrafluron and
Figure imgf000069_0001
pyrimidinylsulfonylurea herbicides such as amidosulfuron, azimsulfuron, bensulfuron, chlorimuron, cyclosulfamuron, ethoxysulfuron, flazasulfiiron, flucetosulfuron, flupyrsulfuron, foramsulfuron, halosulfuron, imazosulfϊiron, mesosulfuron, nicosulfuron, orthosulfamuron, oxasulfuron, primisulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron and trifloxysulfuron; triazinylsulfonylurea herbicides such as chlorsulfuron, cinosulfuron, ethametsulfuron, iodosulfuron, metsulfuron, prosulfuron, thifensulfuron, triasulfuron, tribenuron, triflusulfuron and tritosulfuron; thiadiazolylurea herbicides such as buthiuron, ethidimuron, tebuthiuron, thiazafluron and thidiazuron; and unclassified herbicides such as acrolein, allyl alcohol, azafenidin, benazolin, bentazone, benzobicyclon, buthidazole, calcium cyanamide, cambendichlor, chlorfenac, chlorfenprop, chlorflurazole, chlorflurenol, cinmethylin, clomazone, CPMF, cresol, ortho-dichlorobenzene, dimepiperate, endothal, fluoromidine, fluridone, flurochloridone, flurtamone, fluthiacet, indanofan, methazole, methyl isothiocyanate, nipyraclofen, OCH, oxadiargyl, oxadiazon, oxaziclomefone, pentachlorophenol, pentoxazone, phenylmercury acetate, pinoxaden, prosulfalin, pyribenzoxim, pyriftalid, quinoclamine, rhodethanil, sulglycapin, thidiazimin, tridiphane, trimeturon, tripropindan and tritac.
Before an insecticide can be used or sold commercially, such composition undergoes lengthy evaluation processes by various governmental authorities (local, regional, state, national, and international). Voluminous data requirements are specified by regulatory authorities and must be addressed through data generation and submission by the product registrant or by another on the product registrant's behalf. These governmental authorities then review such data and if a determination of safety is concluded, provide the potential user and/or seller with product registration approval. Thereafter, in that locality where the product registration is granted and supported, such user and/or seller may use and/or sell such compound.
Any theory, mechanism of operation, proof, or finding stated herein is meant to further enhance understanding of the present invention and is not intended to make the present invention in any way dependent upon such theory, mechanism of operation, proof, or finding. It should be understood that while the use of the word preferable, preferably or preferred in the description above indicates that the feature so described may be more desirable, it nonetheless may not be necessary and embodiments lacking the same may be contemplated as within the scope of the invention, that scope being defined by the claims that follow. In reading the claims it is intended that when words such as "a," "an," "at least one," "at least a portion" are used there is no intention to limit the claim to only one item unless specifically stated to the contrary in the claim. Further, when the language "at least a portion" and/or "a portion" is used the item may include a portion and/or the entire item unless specifically stated to the contrary. While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the selected embodiments have been shown and described and that all changes, modifications and equivalents that come within the spirit of the invention as defined herein or by any of the following claims are desired to be protected.

Claims

What is claimed is:
1. A composition, comprising: a compound having the following formula (I):
Figure imgf000071_0001
X represents NO2, CN or COOR4;
L represents a single bond or R1, S and L taken together represents a 4-, 5- or 6- membered ring; R1 represents (C1-C4) alkyl;
R2 and R3 are distinct from each other and individually represent hydrogen, methyl, ethyl, fluoro, chloro or bromo; n is 1 when L represents a single bond or is O when R1, S and L taken together represents a 4-, 5- or 6- membered ring; Y represents (Ci-C4) haloalkyl, F, Cl, Br, or I; and
R4 represents (C1-C3) alkyl; and an organic acid or a salt thereof.
2. The composition of claim 1, wherein L represents a single bond and the compound includes the following structure:
Figure imgf000072_0001
wherein
X represents NO2, CN or COOR4; R1 represents (C1-C4) alkyl;
R2 and R3 are distinct from each other and individually represent hydrogen, methyl, ethyl, fluoro, chloro or bromo;
Y represents (C1-C4) haloalkyl, F, Cl, Br, or I; and R4 represents (Ci -C3) alkyl.
3. The composition of claim 1, wherein R1, S and L taken together form a 5-membered ring and n is 0 and the compound includes the following structure:
Figure imgf000072_0002
wherein
X represents NO2, CN or COOR4;
Y represents (Ci-C4) haloalkyl, F, Cl, Br, or I; and R4 represents (Cj-C3) alkyl.
4. The composition of any of claims 1-3, wherein X represents NO2 or CN.
5. The composition of any of claims 1-3, wherein Y represents -CF3.
5.
6. The composition of any of claims 1-3, wherein R2 and R3 independently represent hydrogen, methyl or ethyl.
7. The composition of any of claims 1-6, wherein said organic acid is a carboxylic acid. 0
8. The composition of claim 7, wherein said carboxylic acid is selected from the group consisting of citric acid, phthalic acid, malic acid, tartaric acid, maleic acid, malonic acid, lactic acid and succinic acid.
9. The composition of any one of claims 1-7, further comprising a phytologically- 5 acceptable carrier.
10. A method of controlling insects which comprises applying to a locus where control is desired an insect-inactivating amount of a composition according to any one of claims 1-9.
1 1. A composition, comprising: a compound having the following structure:
Figure imgf000073_0001
and an organic acid or a salt thereof.
12. The composition of claim 11, wherein said organic acid is a carboxylic acid selected from the group consisting of citric acid, phthalic acid, malic acid, tartaric acid, maleic acid, malonic acid, lactic acid and succinic acid.
13. The composition of claim 11, further comprising one or more other insecticides or fungicides.
14. The composition of claim 11, wherein the ratio, by weight, between the compound and the organic acid or salt thereof is from about 240: 1 to about 48: 1.
15. A method of controlling insects which comprises applying to a locus where control is desired an insect-inactivating amount of a composition according to claim 11.
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