EP0846112A1 - Herbicides bicycliques - Google Patents

Herbicides bicycliques

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Publication number
EP0846112A1
EP0846112A1 EP96928223A EP96928223A EP0846112A1 EP 0846112 A1 EP0846112 A1 EP 0846112A1 EP 96928223 A EP96928223 A EP 96928223A EP 96928223 A EP96928223 A EP 96928223A EP 0846112 A1 EP0846112 A1 EP 0846112A1
Authority
EP
European Patent Office
Prior art keywords
alkyl
halogen
optionally substituted
haloalkyl
alkoxy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96928223A
Other languages
German (de)
English (en)
Inventor
Stephen Kenneth Gee
Mary Ann Hanagan
Wonpyo Hong
Roman Kucharczyk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of EP0846112A1 publication Critical patent/EP0846112A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
    • C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
    • C07D333/54—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/06—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings
    • A01N43/12—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings condensed with a carbocyclic ring
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
    • A01N43/18—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with sulfur as the ring hetero atom
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
    • A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
    • A01N43/84—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms six-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,4
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D279/00—Heterocyclic compounds containing six-membered rings having one nitrogen atom and one sulfur atom as the only ring hetero atoms
    • C07D279/10—1,4-Thiazines; Hydrogenated 1,4-thiazines
    • C07D279/14—1,4-Thiazines; Hydrogenated 1,4-thiazines condensed with carbocyclic rings or ring systems
    • C07D279/16—1,4-Thiazines; Hydrogenated 1,4-thiazines condensed with carbocyclic rings or ring systems condensed with one six-membered ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D335/00—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom
    • C07D335/04—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
    • C07D335/06—Benzothiopyrans; Hydrogenated benzothiopyrans
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/06—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
    • C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
    • C07D403/06—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
    • C07D405/06—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
    • C07D409/06—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms

Definitions

  • This invention relates to certain bicyclic compounds, their agriculturally suitable salts and compositions, and methods of their use for controlling undesirable vegetation.
  • the control of undesired vegetation is extremely important in achieving high crop efficiency. Achievement of selective control of the growth of weeds especially in such useful crops as rice, soybean, sugar beet, corn (maize), potato, wheat, barley, tomato and plantation crops, among others, is very desirable. Unchecked weed growth in such useful crops can cause significant reduction in productivity and thereby result in increased costs to the consumer.
  • the control of undesired vegetation in noncrop areas is also important. Many products are commercially available for these purposes, but the need continues for new compounds which are more effective, less costly, less toxic, environmentally safer or have different modes of action.
  • EP 283,261 discloses cyclic diones of Formula i as herbicides:
  • X, X 1 and X 2 are independently O or S;
  • R 1 is a monocyclic or fused-bicyclic heterocyclic group containing up to ten ring atoms up to five of which may be selected from O, N and S, optionally substituted with one or more groups selected from, among others, oxo, halogen, nitro, cyano, alkyl, haloalkyl, haloalkoxy, alkoxy, alkylsulfonyl;
  • Y is, among others, C 2 -C 4 alkylene which is optionally substituted with one or more groups selected from, among others, halogen or alkyl.
  • This invention is directed to compounds of Formula I including all geometric and stereoisomers, agriculturally suitable salts thereof, agricultural compositions containing them and their use for controlling undesirable vegetation:
  • Y is O; NR 9 ; or CH 2 optionally substituted with one or two groups independently selected from Ci-Cg alkyl, C ⁇ -C 6 haloalkyl and halogen; provided that when A is -NR 9 -(CH 2 ) ⁇ -, then Y is CH 2 ;
  • X is O or S
  • R 1 is H, C r C 6 alkyl, C r C 6 haloalkyl, C r C 6 alkoxy, C r C 6 haloalkoxy, halogen, cyano, nitro, S(O) 2 NR 10 R 11 , C r C 6 alkylsulfonyl, C r C 6 haloalkylsulfonyl, C 3 -C 6 alkenylsulfonyl, C 3 -C 6 haloalkenylsulfonyl, C 3 -C 6 alkynylsulfonyl, C3-C6 haloalkynylsulfonyl or C3-C6 cycloalkylsulfonyl; or R 1 is phenylsulfonyl optionally substituted with C1-C3 alkyl, -C3 haloalkyl, C1-C3 alkoxy, C1-C3 haloalk
  • R 5 is H, -Cg alkyl, C r C 6 haloalkyl, C 2 -C 6 alkoxyalkyl, formyl, C 2 -C 6 alkylcarbonyl, C -C 6 alkoxycarbonyl, C 2 -C 6 alkylaminocarbonyl, C 3 -C 7 dialkylaminocarbonyl, Cj-C 6 alkylsulfonyl or C r C 6 haloalkylsulfonyl; or R 5 is benzoyl or phenylsulfonyl, each optionally substituted with C j -C 3 alkyl, halogen, cyano or nitro;
  • R 6 is H, C r C 6 alkyl, C r C 6 haloalkyl, C 3 -C 6 alkenyl or C 3 -C 6 alkynyl; or R6 is phenyl or benzyl, each optionally substituted on the phenyl ring with C1-C 3 alkyl, C r C 3 haloalkyl, C r C 3 alkoxy, C r C 3 haloalkoxy, 1-2 halogen, cyano or nitro;
  • R 10 is H, C r C 6 alkyl, C r C 6 haloalkyl, C 3 -C 6 alkenyl, C 3 -C 6 haloalkenyl, C 3 -C 6 alkynyl, C 3 -C 6 haloalkynyl, C 3 -C 6 cycloalkyl or C 1 -C 6 alkoxy; or R 10 is phenyl or benzyl, each optionally substituted on the phenyl ring with C ] -C 3 alkyl, C r C 3 haloalkyl, C r C 3 alkoxy, C r C 3 haloalkoxy, 1-2 halogen, cyano or nitro;
  • R 11 is H, C r C 6 alkyl or C r C 6 haloalkyl; or R 10 and R 11 can be taken together as -CH 2 CH 2 -, -CH 2 CH 2 CH 2 -,
  • R 12 is H, C r C 6 alkyl, C r C 6 haloalkyl, C 2 -C 6 alkoxyalkyl, formyl, C 2 -C 6 alkylcarbonyl, C -Cg alkoxycarbonyl, C 2 -C 6 alkylaminocarbonyl, C3-C 7 dialkylaminocarbonyl, Cj-Cg alkylsulfonyl or Ci-C haloalkylsulfonyl; or R 12 is benzoyl or phenylsulfonyl, each optionally substituted with C1-C 3 alkyl, halogen, cyano or nitro; mis 1, 2 or 3; n is 1 or 2; q is O, 1, 2, 3 or
  • each R 8 is independently Cj-Cg alkyl, C j -Cg haloalkyl, C ] -C 6 alkoxy, hydroxy or halogen provided that no more than one R 8 is C j -Cg alkoxy; and (vi) when A is -(CH 2 ) m - optionally substituted with one to four R 8 ; Y is CH 2 optionally substituted with one or two groups independently selected from
  • alkyl used either alone or in compound words such as "alkylthio" or “haloalkyl” includes straight-chain or branched alkyl, such as, methyl, ethyl, n-propyl, -propyl, or the different butyl, pentyl or hexyl isomers.
  • alkyl indicates that one to four of the available positions for that substituent may be alkyl which are independently selected.
  • 1-4 CH 3 indicates that one to four of the available positions for that substituent may be methyl.
  • alkenyl includes straight-chain or branched alkenes such as 1 -propenyl, 2-propenyl, and the different butenyl, pentenyl and hexenyl isomers.
  • Alkenyl also includes polyenes such as 1,2-propadienyl and 2,4-hexadienyl.
  • Alkynyl includes straight-chain or branched alkynes such as 1-propynyl, 2-propynyl and the different butynyl, pentynyl and hexynyl isomers. "Alkynyl” can also include moieties comprised of multiple triple bonds such as 2,5-hexadiynyl. "Alkoxy” includes, for example, methoxy, ethoxy, n-propyloxy, isopropyloxy and the different butoxy, pentoxy and hexyloxy isomers. "Alkoxyalkyl” denotes alkoxy substitution on alkyl.
  • alkoxyalkyl examples include CH 3 OCH 2 , CH 3 OCH 2 CH 2 , CH 3 CH 2 OCH 2 , CH 3 CH 2 CH 2 OCH 2 and CH 3 CH 2 OCH 2 CH 2 .
  • Alkylthio includes branched or straight-chain alkylthio moieties such as methylthio, ethylthio, and the different propylthio, butylthio, pentylthio and hexylthio isomers.
  • Alkylsulfinyl includes both enantiomers of an alkylsulfinyl group.
  • alkylsulfinyl examples include CH 3 S(O), CH 3 CH 2 S(O), CH 3 CH 2 CH 2 S(O), (CH 3 ) 2 CHS(O) and the different butylsulfinyl, pentylsulfinyl and hexylsulfinyl isomers. Examples of
  • alkylsulfonyl include CH 3 S(O) 2 , CH 3 CH 2 S(O) 2 , CH 3 CH 2 CH 2 S(O) 2 , (CH 3 ) 2 CHS(O) 2 and the different butylsulfonyl, pentylsulfonyl and hexylsulfonyl isomers.
  • Alkylamino “dialkylamino”, and the like, are defined analogously to the above examples.
  • Cycloalkyl includes, for example, cyclopropyl, cyclobutyl, cyclopentyl, and cyclohexyl.
  • halogen either alone or in compound words such as “haloalkyl”, includes fluorine, chlorine, bromine or iodine.
  • 1-2 halogen indicates that one or two of the available positions for that substituent may be halogen which are independently selected.
  • alkyl may be partially or fully substituted with halogen atoms which may be the same or different.
  • haloalkyl include F 3 C, C1CH 2 , CF 3 CH 2 and CF 3 CC1 2 .
  • haloalkenyl “haloalkynyl", “haloalkoxy”, and the like, are defined analogously to the term “haloalkyl”.
  • haloalkynyl examples include HC ⁇ CCHCl, CF 3 C ⁇ C, CC1 3 C ⁇ C and FCH 2 C ⁇ CCH 2 .
  • haloalkoxy examples include CF 3 O, CCl 3 CH 2 O, HCF 2 CH 2 CH 2 O and CF 3 CH 2 O.
  • haloalkylthio examples include CC1 3 S, CF 3 S, CC1 3 CH 2 S and C1CH 2 CH 2 CH 2 S.
  • haloalkylsulfinyl examples include CF 3 S(O), CCl 3 S(O), CF 3 CH 2 S(O) and CF 3 CF 2 S(O).
  • haloalkylsulfonyl examples include CF 3 S(O) 2 , CCl 3 S(O) 2 , CF 3 CH 2 S(O) 2 and CF 3 CF 2 S(O) 2 .
  • CJ-C3 alkylsulfonyl designates methylsulfonyl through propylsulfonyl
  • C 2 alkoxyalkyl designates CH 3 OCH 2
  • C 3 alkoxyalkyl designates, for example, CH 3 CH(OCH 3 ), CH 3 OCH 2 CH 2 or CH3CH 2 OCH 2
  • C4 alkoxyalkyl designates the various isomers of an alkyl group substituted with an alkoxy group containing a total of four carbon atoms, examples including CH 3 CH 2 CH 2 OCH 2 and CH 3 CH 2 OCH 2 CH 2 .
  • alkylcarbonyl examples include C(O)CH 3 , C(O)CH 2 CH 2 CH 3 and C(O)CH(CH 3 ) 2 .
  • substituents When a compound is substituted with a substituent bearing a subscript that indicates the number of said substituents can exceed 1, said substituents (when they exceed 1) are independently selected from the group of defined substituents. Further, when the subscript indicates a range, e.g. (R)j_;, then the number of substituents may be selected from the integers between i and j inclusive.
  • Stereoisomers of this invention can exist as one or more stereoisomers.
  • the various stereoisomers include enantiomers, diastereomers, atropisomers and geometric isomers.
  • one stereoisomer may be more active and/or may exhibit beneficial effects when enriched relative to the other stereoisomer(s) or when separated from the other stereoisomer(s).
  • the skilled artisan knows how to separate, enrich, and/or to selectively prepare said stereoisomers.
  • the present invention comprises compounds selected from Formula I and agriculturally suitable salts thereof.
  • the compounds of the invention may be present as a mixture of stereoisomers, individual stereoisomers, or as an optically active form.
  • Some compounds of this invention can exist as one or more tautomers.
  • One skilled in the art will recognize, for example, that compounds of Formula la (Formula I where Q is Q-l, R 3 is OR 12 , and R 12 is H) can also exist as the tautomers of
  • the salts of the compounds of the invention include acid-addition salts with inorganic or organic acids such as hydrobromic, hydrochloric, nitric, phosphoric, sulfuric, acetic, butyric, fumaric, lactic, maleic, malonic, oxalic, propionic, salicylic, tartaric, 4-toluenesulfonic or valeric acids.
  • the salts of the compounds of the invention also include those formed with organic bases (e.g., pyridine, ammonia, or triethylamine) or inorganic bases (e.g., hydrides, hydroxides, or carbonates of sodium, potassium, lithium, calcium, magnesium or barium) when the compound contains an acidic group such as an enol.
  • Preferred compounds for reasons of better activity and/or ease of synthesis are: Preferred 1.
  • Compounds of Formula I above, and agriculturally suitable salts thereof, wherein: the A- Y-Z moiety is selected from combinations of A, Y and Z such that (i) when A is -(CH 2 ) m - optionally substituted with one to two R 8 and Y is O or NR 9 , then Z is C( X);
  • R 7 is H, C r C 3 alkyl or C r C 3 haloalkyl
  • R 9 is H, C r C 6 alkyl, C r C 6 haloalkyl, C 3 -C 6 alkenyl, C 3 -C 6 alkynyl or
  • R 12 is H, formyl, C 2 -C 6 alkylcarbonyl, C 2 -C 6 alkoxycarbonyl, C 2 -C 6 alkylaminocarbonyl, C 3 -C7 dialkylaminocarbonyl, C j -Cg alkylsulfonyl or C r C 6 haloalkylsulfonyl; or R 12 is benzoyl or phenylsulfonyl, each optionally substituted with C 1 -C 3 alkyl, halogen, cyano or nitro; q is 0, 1 or 2; and r is O or l.
  • R 1 is H, methyl, halogen, S(0) 2 NR 1 °R 11 , C r C 4 alkylsulfonyl, C r C 4 haloalkylsulfonyl or C 3 -C5 cycloalkylsulfonyl;
  • R 2 is methyl, halogen or nitro;
  • R3 is OR 12 ;
  • R 10 is H, C 1 -C 4 alkyl, allyl or propargyl; R 1 1 is H or C r C 4 alkyl; and
  • R 12 is H or C1-C 3 alkylsulfonyl; or R 12 is benzoyl or phenylsulfonyl, each optionally substituted with C r C 3 alkyl, halogen, cyano or nitro. Most preferred are compounds of Preferred 2 selected from the group:
  • This invention also relates to herbicidal compositions comprising herbicidally effective amounts of the compounds of the invention and at least one of a surfactant, a solid diluent or a liquid diluent.
  • a surfactant a solid diluent or a liquid diluent.
  • the preferred compositions of the present invention are those which comprise the above preferred compounds.
  • This invention also relates to a method for controlling undesired vegetation comprising applying to the locus of the vegetation herbicidally effective amounts of the compounds of the invention (e.g., as a composition described herein).
  • the preferred methods of use are those involving the above preferred compounds.
  • the compounds of Formula I can be prepared by one or more of the following methods and variations as described in Schemes 1-31.
  • the definitions of Q, A, Y, Z, X, R ⁇ R 12 , m, n, q and r in the compounds of Formulae 1-29 below are as defined above in the Summary of the Invention.
  • Compounds of Formulae Ia-Ie are various subsets of the compounds of Formula I, and all substituents for Formulae Ia-Ie are as defined above for Formula I.
  • Compounds of Formulae Id and Ie correspond to Formula I compounds wherein Q is Q-l and Q-2, respectively.
  • X 1 is chlorine, bromine, fluorine, methylsulfonyloxy (OMs), trifluoromethylsulfonyloxy (OTf), p-toluenesulfonyloxy (OTs) or acetyloxy (OAc) and R 13 is as previously defined.
  • X 1 is chlorine, bromine, fluorine
  • an oxidizing reagent such as peroxyacetic acid, -chloroperoxybenzoic acid, peroxytrifluoroacetic acid, potassium peroxymonosulfate or hydrogen peroxide.
  • the oxidation is carried out by methods known in the art (or by obvious modifications of these methods); for example, see S. Patai, et al., The Chemistry ofSulphones and Sulphoxides, John Wiley & Sons, 1988; pp 205-213, 235-253.
  • X 2 is halogen
  • a cyanide source e.g., acetone cyanohydrin or potassium cyanide.
  • Enol esters of Formula 4 can be prepared by reacting a dione of Formula 5 with an acid chloride of Formula 6 in the presence of a slight molar excess of a base such as triethylamine in an inert organic solvent such acetonitrile, methylene chloride or toluene at temperatures between 0 °C and 110 °C (Scheme 6).
  • a base such as triethylamine
  • an inert organic solvent such as acetonitrile, methylene chloride or toluene
  • Enol esters of Formula 4 can also be prepared by reacting a dione of Formula 5 with an acid of Formula 7 in the presence of a coupling agent such as 2-chloro-l- methylpyridinium iodide and a slight excess of base such as triethylamine in an inert organic solvent such as acetonitrile, methylene chloride or toluene at temperatures between 0 °C and 110 °C (Scheme 6A).
  • a coupling agent such as 2-chloro-l- methylpyridinium iodide and a slight excess of base such as triethylamine in an inert organic solvent such as acetonitrile, methylene chloride or toluene at temperatures between 0 °C and 110 °C (Scheme 6A).
  • This type of coupling is known in the art: for example, see T. Mukaiyama et al., Chem. Lett. (1975), 1045-1048.
  • the acid chlorides of Formula 6 can be prepared by reacting an acid of Formula 7 with a halogenating reagent (e.g., oxalyl chloride or thionyl chloride) and a catalytic amount of dimethylformamide (Scheme 7).
  • a halogenating reagent e.g., oxalyl chloride or thionyl chloride
  • Scheme 7 a catalytic amount of dimethylformamide
  • Scheme 8 illustrates the preparation of acids of Formula 7 whereby a ketone of Formula 8 is reacted with an oxidizing reagent such as NaOCl, NaOBr, NaOI or NaNO 2 .
  • an oxidizing reagent such as NaOCl, NaOBr, NaOI or NaNO 2 .
  • the oxidation is carried out by methods known in the art (or by obvious modifications of these methods): for example, see T. F. Braish, et al., Org. Prep. Proced. Int., (1991), 23, 655-658 and J. A. Skorcz, et al., Heterocycl. Chem., (1973), 10, 249. 14 Scheme 8
  • Oxidizing reagent e.g.,NaOBr
  • Scheme 9 illustrates the preparation of sulfones of Formula 8a whereby a sulfide of
  • Formula 9 is reacted with an oxidizing reagent such as peroxyacetic acid, -chloroperoxybenzoic acid, peroxytrifluoroacetic acid, potassium peroxymonosulfate or hydrogen peroxide.
  • an oxidizing reagent such as peroxyacetic acid, -chloroperoxybenzoic acid, peroxytrifluoroacetic acid, potassium peroxymonosulfate or hydrogen peroxide.
  • the oxidation is carried out by methods known in the art (or by obvious modifications of these methods): for example, see S. Patai, et al., The Chemistry ofSulphones and Sulphoxides, John Wiley & Sons, 1988; pp 205-213,
  • the functional group may be protected before the oxidation and then be deprotected after the oxidation.
  • the protection and deprotection procedures are well known in the literature: for example, see T. W. Greene, et. al., Protective Groups in Organic Synthesis (Second Edition), John Wiley & Sons, Inc., J. E. McMurry and T. Hoz, J. Org. Chem., (1975), 40, 3797 and references cited therein.
  • Scheme 10 illustrates the preparation of ketones of Formula 9 whereby a sulfide of Formula 10 is reacted with an acylating reagent 11 such as acetyl chloride or acetic anhydride in the presence of a Lewis acid such as aluminum chloride in a solvent such as carbon disulfide, methylene chloride or 1,2-dichloroethane. This conversion is carried out using methods well known in the art: for example, see R. A. Cutler, J. Amer. Chem. Soc, (1952), 74, 5475.
  • R 18 HorR 8 R 2 is other than Br
  • an appropriate leaving group such as a halogen, a mesylate or tosylate.
  • the reactions to prepare the mesylate or tosylate are carried with a sulfonyl chloride of Formula 13 in the presence of a base such as pyridine, sodium hydride or triethylamine in a solvent such as pyridine or methylene chloride at temperatures between 0 °C and room temperature.
  • a base such as pyridine, sodium hydride or triethylamine
  • solvent such as pyridine or methylene chloride
  • Compounds of Formula 12a can be prepared from an amide of Formula 14 by treatment with an excess of a base such as n-butyllithum and an electrophile such as an epoxide of Formula 15 in a solvent such as THF.
  • a base such as n-butyllithum
  • an electrophile such as an epoxide of Formula 15 in a solvent such as THF.
  • This conversion is carried out using methods known in the literature (or obvious modifications of these methods): for example, see R. N. Misra, et al., Bioorg. Med. Chem. Lett., (1991), 1, 295-298 and B. H. Bhide, et al., Chem. andlnd., (1975), 519.
  • Compounds of Formula 14 can be prepared from an acid chloride of Formula 16 and an amine of Formula 17 in the presence of a base such as triethylamine or excess NH 2 R 9 in a solvent such as chloroform. This conversion is carried out using methods well known in the literature (or obvious modifications of these methods): for example, see A. D. Wolf, EP 196,786.
  • a reducing reagent such as hydrogen at 345 kPa (50 psi)
  • a catalyst such as palladium on carbon in a solvent such as ethanol.
  • the reduction is carried out by methods well known in the art (or by obvious modifications of these methods): for example, R. D. Clark, et at., J. Med. Chem., (1993), 36, 2645-57 and C. Y. Cheng, J. Heterocyclic. Chem., (1995), 32, 73.
  • the reaction is carried out by methods well known in the art (or by obvious modifications of these methods): for example, see R. Singh, et. al., J. Indian Chem. Soc, (1991), 68, 276-80, M. Somei, Chem. Pharm. Bull., (1981), 29, 249, and N. Gilman, Synth. Commun., (1982), 12, 373-80.
  • This coupling is carried out by methods known in the art (or by obvious modification of these methods): for example, see K. Nakamura, et al., WO 95/04054.
  • R 5a is the same as R 5 as described in the Summary of the Invention excluding H.
  • a cyanide source e.g., acetone cyanohydrin or potassium cyanide.
  • An ester of Formula 20 can be prepared by reacting a hydroxypyrazole of Formula 21 with an acid chloride of Formula 6 in the presence of a slight molar excess of a base such as triethylamine in an inert organic solvent such as acetonitrile, methylene chloride or toluene at temperatures between 0 °C and 110 °C (Scheme 24).
  • a base such as triethylamine
  • an inert organic solvent such as acetonitrile, methylene chloride or toluene
  • a high boiling solvent such as dimethylaniline
  • the preparation of compounds of the Formula 23a can be accomplished by treatment of compounds of the Formula 23 with triethylsilane in trifluoroacetic acid (Scheme 27).
  • the reaction is best carried out at temperatures between 25 °C and 72 °C.
  • Typical conditions employed are the treatment of compounds of Formula 26 with one equivalent to a slight excess of bromine in an inert solvent such as dichloromethane or chloroform at temperatures from 20 °C up to the boihng point of the solvent.
  • an inert solvent such as dichloromethane or chloroform
  • This general method is carried out by the addition of n-butyl lithium to a solution of the compound of the Formula 27 in THF or diethyl ether at temperatures from 25 °C to -70 °C. Carbon dioxide is introduced to produce the resulting acid.
  • This classical reaction is known to one skilled in the art. For a typical procedure see, R. L. Danheiser et al., J. Am. Chem. Soc, (1986), 108, 806-810.
  • Step D Preparation of N-( 1.1 -dimethylethylV2-(ethylthioV6-r2- [(methylsulfonyDoxylethyllbenzamide
  • Step F Preparation of 5-acetyl-2-(l .l-dimethylethvn-8-(ethylthio)-3.4-dihydro-
  • Step G Preparation of 5-acetyl-2-(l.l-dimethylethyl)-8-(ethylsulfonyl -3.4- dihydro- 1 (2H)-isoquinolinone
  • Oxone® a solution of 0.41 g (1.34 mmol) of the title compound of Step Fin 3 mL of acetone.
  • the reaction mixture was stirred at room temperature for 1.5 h and then diluted with water and ethyl acetate. The phases were separated and the aqueous phase was extracted again with ethyl acetate.
  • Step H Preparation of 2-( 1.1 -dimethylethyl)-8-(ethylsulfonyl)- 1.2.3.4-tetrahydro- l-oxo-5-isoquinolinecarboxylic acid
  • Step J Preparation of 2-(l.l-dimethylethyl)-5-f(l-ethyl-5-hydroxy-lH-pyrazol-4- yl)carbonyn-8-(ethylsulfonyl)-3.4-dihydro- 1 (2H)-isoquinolinone
  • Step B Preparation of 2.4.7-trimethylbenzorfclthiophene To 230 mL of dimethylaniline at reflux was added dropwise a solution of 50.0 g
  • Step F Preparation of 2.3-dihydro-2.4.7-trimethylbenzo
  • Oxone® a solution of 5.0 g (23.0 mmol) of the title compound of Step E in 50 mL of acetone.
  • To the resulting solution was added portionwise 12.0 g (143 mmol) of sodium bicarbonate.
  • the solution was stirred an additional 1.5 h at room temperature.
  • To the solution was added IN HCl to bring the pH to 3.
  • Step G Preparation of 1 -ethyl- l-H-pyrazol-5-yl 2.3-dihydro-2.4.7- trimethylbenzorfrl thiophene-5-carboxylate 1.1 -dioxide
  • a solution of 1.0 g (3.94 mmol) of the title compound of Step F in 35 mL of dichloromethane at room temperature was added 0.55 mL (6.30 mmol) of oxalyl chloride and a catalytic amount of dimethylformamide.
  • the resulting solution was heated to reflux for 3 h and then stirred at ambient temperature overnight.
  • the reaction mixture was concentrated in vacuo.
  • the crude reaction mass was dissolved in 20 mL of dichloromethane and treated at room temperature successively with 0.89 mL (6.30 mmol) of triethylamine followed by 0.46 g (4.11 mmol) of l-ethyl-5-hydroxy-lH- pyrazole. The reaction mixture was stirred at room temperature overnight. The reaction mixture was diluted with excess ethyl acetate, washed with water and dried over MgSO 4 . Filtration followed by concentration afforded the crude product which was chromatographed on silica gel (elution with 1:1 ethyl acetate:hexanes) to afford 0.89 g of the title compound of Step G as a white solid.
  • Step H Preparation of ( 2.3-dihydro-2.4.7-trimethylbenzorblthiophene-5-yl)( 1 - ethyl-5-hy ⁇ JOxy-lH-pyrazol-4-y methanone -S'.-?-dioxide
  • acetone cyanohydrin To a solution of 0.89 g (2.56 mmol) of the title compound of Step G in 15 mL of acetonitrile at room temperature was added 4 drops of acetone cyanohydrin followed by 0.57 mL (4.09 mmol) of triethylamine. The solution was stirred at room temperature overnight, then diluted with excess water, acidified with IN ⁇ C1 to p ⁇ 3-5 and extracted with ethyl acetate.
  • Step B Preparation of methyl 3,4-dihydro-3-oxo-2H-l,4-benzothiazine-6- carboxylate 10.0 g (35 mmol) of the title compound of Step A was dissolved in 160 mL of acetic acid and 20 mL of water was added. The solution was heated to 65 °C and 11.7 g (210 mmol) of iron powder was added in small portions. Vigorous stirring was continued for 10 minutes after the end of the iron addition, after which the reaction was filtered through Celite®. The solids were washed with acetic acid and the combined filtrates concentrated. The crude mixture was partitioned between ethyl acetate and sodium bicarbonate solution.
  • Step C Preparation of methyl 4-ethyl-3.4-dihydro-3-oxo-2H- 1.4-benzothiazine-6- carboxylate 10.0 g (45 mmol) of the title compound of Step B was dissolved in 50 mL of anhydrous dimethylformamide. 6.0 g (54 mmol) of potassium t-butoxide was added and the reaction was stirred for 15 minutes. 4.0 mL (50 mmol) of ethyl iodide was added dropwise and the reaction was stirred for 2 h. The reaction mixture was poured into 350 mL of cold water and extracted three times with diethyl ether.
  • Step D Preparation of methyl 4-ethyl-3.4-dihydro-3-oxo-2H-l .4-benzothiazine-6- carboxylate 1.1 -dioxide
  • a mixture of 2.0 g (8.0 mmol) of the title compound of Step C in 50 mL of methylene chloride was added 5.0 mL (24 mmol) of 32% peracetic acid dropwise over a period of 20 minutes.
  • the reaction mixture was stirred at room temperature for 48 h, diluted further with methylene chloride, washed once with water, twice with sodium sulfite solution, and once with sodium bicarbonate solution.
  • Step E Preparation of 4-ethyI-3.4-dihydro-3-oxo-2H- 1.4-benzothiazine-6- carboxylic acid 1.1 -dioxide
  • a mixture of 2.05 g (7.2 mmol) of the title compound of Step D in 15 mL of methanol was added dropwise a solution of 1.2 g (29 mmol) of sodium hydroxide in 5 mL of water.
  • the reaction mixture was stirred at room temperature for 1 h, diluted with water, and cooled in an ice/water bath. Slow acidification with IN ⁇ C1 to p ⁇ 2 yielded a precipitate which was isolated by filtration to give 1.45 g of the title compound of Step E as a white solid.
  • Step F Preparation of 3-oxo-l -cyclohexen- 1-yl 4-ethyl-3.4-dihydro-3-oxo-2H- 1.4-benzothiazine-6-carboxylate 1.1 -dioxide
  • Step G Preparation of 4-ethyl-6-
  • Compounds of this invention will generally be used as a formulation or composition with an agriculturally suitable carrier comprising at least one of a liquid diluent, a solid diluent or a surfactant.
  • the formulation or composition ingredients are selected to be consistent with the physical properties of the active ingredient, mode of application and environmental factors such as soil type, moisture and temperature.
  • Useful formulations include liquids such as solutions (including emulsifiable concentrates), suspensions, emulsions (including microemulsions and/or suspoemulsions) and the like which optionally can be thickened into gels.
  • Useful formulations further include solids such as dusts, powders, granules, pellets, tablets, films, and the like which can be water-dispersible ("wettable") or water-soluble.
  • Active ingredient can be (micro)encapsulated and further formed into a suspension or solid formulation; alternatively the entire formulation of active ingredient can be encapsulated (or "overcoated”). Encapsulation can control or delay release of the active ingredient.
  • Sprayable formulations can be extended in suitable media and used at spray volumes from about one to several hundred liters per hectare. High-strength compositions are primarily used as intermediates for further formulation.
  • the formulations will typically contain effective amounts of active ingredient, diluent and surfactant within the following approximate ranges which add up to 100 percent by weight.
  • Typical solid diluents are described in Watkins, et al., Handbook of Insecticide Dust Diluents and Carriers, 2nd Ed., Dorland Books, Caldwell, New Jersey. Typical liquid diluents are described in Marsden, Solvents Guide, 2nd Ed., Interscience, New York, 1950. McCutcheon's Detergents and Emulsifiers Annual, Allured Publ. Corp., Ridgewood, New Jersey, as well as Sisely and Wood, Encyclopedia of Surface Active Agents, Chemical Publ. Co., Inc., New York, 1964, list surfactants and recommended uses.
  • All formulations can contain minor amounts of additives to reduce foam, caking, corrosion, microbiological growth and the like, or thickeners to increase viscosity.
  • Surfactants include, for example, polyethoxylated alcohols, polyethoxylated alkylphenols, polyethoxylated sorbitan fatty acid esters, dialkyl sulfosuccinates, alkyl sulfates, alkylbenzene sulfonates, organosilicones, N,N-dialkyltaurates, lignin sulfonates, naphthalene sulfonate formaldehyde condensates, polycarboxylates, and polyoxyethylene/polyoxypr ⁇ pylene block copolymers.
  • Solid diluents include, for example, clays such as bentonite, montmorillonite, attapulgite and kaolin, starch, sugar, silica, talc, diatomaceous earth, urea, calcium carbonate, sodium carbonate and bicarbonate, and sodium sulfate.
  • Liquid diluents include, for example, water, N,N-dimethylformamide, dimethyl sulfoxide, N-alkylpyrrolidone, ethylene glycol, polypropylene glycol, paraffins, alkylbenzenes, alkylnaphthalenes, oils of olive, castor, linseed, tung, sesame, corn, peanut, cotton-seed, soybean, rape-seed and coconut, fatty acid esters, ketones such as cyclohexanone, 2-heptanone, isophorone and 4-hydroxy-4- methyl-2-pentanone, and alcohols such as methanol, cyclohexanol, decanol and tetrahydrofurfuryl alcohol.
  • Solutions can be prepared by simply mixing the ingredients. Dusts and powders can be prepared by blending and, usually, grinding as in a hammer mill or fluid-energy mill. Suspensions are usually prepared by wet-milling; see, for example, U.S. 3,060,084. Granules and pellets can be prepared by spraying the active material upon preformed granular carriers or by agglomeration techniques. See Browning, "Agglomeration", Chemical Engineering, December 4, 1967, pp 147-48, Perry's Chemical Engineer's Handbook, 4th Ed., McGraw-Hill, New York, 1963, pages 8-57 and following, and WO 91/13546. Pellets can be prepared as described in U.S.
  • Water-dispersible and water-soluble granules can be prepared as taught in U.S. 4,144,050, U.S. 3,920,442 and DE 3,246,493. Tablets can be prepared as taught in U.S. 5,180,587, U.S. 5,232,701 and U.S. 5,208,030. Films can be prepared as taught in GB 2,095,558 and U.S. 3,299,566.
  • Compound 20 98.5% silica aerogel 0.5% synthetic amorphous fine silica 1.0%.
  • Compound 22 65.0% dodecylphenol polyethylene glycol ether 2.0% sodium ligninsulfonate 4.0% sodium sUicoaluminate 6.0% montmorillonite (calcined) 23.0%.
  • Compound 20 10.0% attapulgite granules (low volatile matter, 0.71/0.30 mm; U.S.S. No. 25-50 sieves) 90.0%.
  • Compound 22 25.0% anhydrous sodium sulfate 10.0% crude calcium ligninsulfonate 5.0% sodium alkylnaphthalenesulfonate 1.0% calcium/magnesium bentonite 59.0%.
  • Some of the compounds are useful for the control of selected grass and broadleaf weeds with tolerance to important agronomic crops which include but are not limited to alfalfa, barley, cotton, wheat, rape, sugar beets, corn (maize), sorghum, soybeans, rice, oats, peanuts, vegetables, tomato, potato, perennial plantation crops including coffee, cocoa, oil palm, rubber, sugarcane, citrus, grapes, fruit trees, nut trees, banana, plantain, pineapple, hops, tea and forests such as eucalyptus and conifers (e.g., loblolly pine), and turf species (e.g., Kentucky bluegrass, St. Augustine grass, Kentucky fescue and Bermuda grass). Those skilled in the art will appreciate that not all compounds are equally effective against all weeds. Alternatively, the subject compounds are useful to modify plant growth.
  • Compounds of this invention can be used alone or in combination with other commercial herbicides, insecticides or fungicides. Compounds of this invention can also be used in combination with commercial herbicide safeners such as benoxacor, dichlormid and furilazole to increase safety to certain crops.
  • commercial herbicide safeners such as benoxacor, dichlormid and furilazole to increase safety to certain crops.
  • a mixture of one or more of the following herbicides with a compound of this invention may be particularly useful for weed control: acetochlor, acifluorfen and its sodium salt, aclonifen, acrolein (2-propenal), alachlor, ametryn, amidosulfuron, amitrole, ammonium sulfamate, anilofos, asulam, atrazine, azimsulfuron, benazolin, benazolin-ethyl, benfluralin, benfuresate, bensulfuron-methyl, bensulide, bentazone, bifenox, bromacil, bromoxynil, bromoxynil octanoate, butachlor, butralin, butylate, chlomethoxyfen, chloramben, chlorbromuron, chloridazon, chlorimuron-ethyl, chlornitrofen, chlorotoluron, chlorpropham,
  • Preferred for better control of undesired vegetation e.g., lower use rate, broader spectrum of weeds controlled, or enhanced crop safety
  • a herbicide selected from the group atrazine, chlorimuron-ethyl, cyanazine, glyphosate (and its isopropylammonium, sesquisodium and trimesium salts), imazaquin (and its ammonium salt), imazethapyr (and its ammonium salt), nicosulfuron, primisulfuron-methyl, rimsulfuron and thifensulfuron-methyl.
  • a herbicide selected from the group atrazine, chlorimuron-ethyl, cyanazine, glyphosate (and its isopropylammonium, sesquisodium and trimesium salts), imazaquin (and its ammonium salt), imazethapyr (and its ammonium salt), nicosulfuron, primisulfuron-
  • Specifically preferred mixtures are selected from the group: compound 1 and atrazine; compound 1 and chlorimuron-ethyl; compound 1 and cyanazine; compound 1 and glyphosate; compound 1 and imazaquin; compound 1 and imazethapyr; compound 1 and nicosulfuron; compound 1 and primisulfuron-methyl; compound 1 and rimsulfuron; compound 1 and thifensulfuron-methyl; compound 20 and atrazine; compound 20 and chlorimuron-ethyl; compound 20 and cyanazine; compound 20 and glyphosate; compound 20 and imazaquin; compound 20 and imazethapyr; compound 20 and nicosulfuron; compound
  • a herbicidally effective amount of the compounds of this invention is determined by a number of factors. These factors include: formulation selected, method of application, amount and type of vegetation present, growing conditions, etc. In general, a herbicidally effective amount of compounds of this invention is 0.001 to 20 kg/ha with a preferred range of 0.004 to 1.0 kg ha. One skilled in the art can easily determine the herbicidally effective amount necessary for the desired level of weed control.
  • R 23 is H or R 2 and
  • R ⁇ and K*b are independently H or l
  • R 23 is H or R 2
  • a Compound contains approximately 43% by weight of 7-(ethylsulfonyl)-l,3-dihydro-l- oxo-4-isobenzofurancarboxylic acid. *See Index Table E for *H NMR data.
  • H NMR data are in ppm downfield from tetramethylsilane. Couplings are designated by (s)-singlet, (d)-doublet, (t)-triplet, (q)-quartet, (m)-multiplet, (dd)-doublet of doublets, (br s)-broad singlet, (br t)-broad triplet.
  • Plants ranged in height from two to eighteen cm (one to four leaf stage) for postemergence treatments. Treated plants and controls were maintained in a greenhouse for twelve to sixteen days, after which all species were compared to controls and visually evaluated. Plant response ratings, summarized in Table A, are based on a scale of 0 to 10 where 0 is no effect and 10 is complete control. A dash (-) response means no test result.
  • the compounds evaluated in this test were formulated in a non-phytotoxic solvent mixture which includes a surfactant and applied to the soil surface before plant seedlings emerged (preemergence application), to water that covered the soil surface (flood application), and to plants that were in the one-to-four leaf stage (postemergence application).
  • preemergence application to water that covered the soil surface
  • postemergence application to plants that were in the one-to-four leaf stage
  • a sandy loam soil was used for the preemergence and postemergence tests, while a silt loam soil was used in the flood test. Water depth was approximately 2.5 cm for the flood test and was maintained at this level for the duration of the test.
  • Plant species in the preemergence and postemergence tests consisted of barnyardgrass (Echinochloa crus-galli), barley (Hordeum vulgare), bedstraw (Galium aparine), blackgrass (Alopecurus myosuroides), chickweed (Stellaria media), cocklebur (Xanthium strumarium), corn (Zea mays), cotton (Gossypium hirsutum), crabgrass (Digitaria sanguinalis), downy brome (Bromus tectorum), giant foxtail (Setariafaberii), johnsongrass (Sorghum halpense), lambsquarters (Chenopodium album), morningglory (Ipomoea hederacea), pigweed (Amaranthus retroflexus), rape (Brassica napus), ryegrass (Lolium multiflorum), soybean (Glycine max), speedwell (Veronica persica), sugar beet (Beta vulgaris), velvetleaf (Abutilon the
  • Plant species in the flood test consisted of rice (Oryza sativa), umbrella sedge (Cyperus difformis), duck salad (Heteranthera limosa), barnyardgrass (Echinochloa crus-gall ⁇ ) and Late watergrass (Echinochloa oryzicola) grown to the 2 leaf stage for testing.
  • Morningglory 85 80 90 90 90 30 20 80
  • Rape 30 70 60 80 90 60 20 70
  • Test compounds evaluated in this test were formulated in a non-phytotoxic solvent mixture which included a surfactant and applied to the soil surface before plant seedhngs emerged (preemergence application) and to plants that were grown for various periods of time before treatment (postemergence application).
  • a sandy loam soil was used for the preemergence test while a mixture of sandy loam soil and greenhouse potting mix in a 60:40 ratio was used for the postemergence test.
  • Test compounds were applied within approximately one day after planting seeds for the preemergence test.
  • Crop and weed species include American black nightshade
  • Treated plants and untreated controls were maintained in a greenhouse for approximately 14 to 21 days, after which all treated plants were compared to untreated controls and visually evaluated. Plant response ratings, summarized in Table D, were based upon a 0 to 100 scale where 0 was no effect and 100 was complete control. A dash response (-) means no test result.
  • alexandergrass (Brachiaria plantaginea), alfalfa (Medicago sativa), bermudagrass (Cynodon dactylon), broadleaf signalgrass (Brachiaria plantyphylla), common purslane (Portulaca oleracea), common ragweed (Ambrosia elatior), cotton (Gossypium hirsutum), dallisgrass (Paspalum dilatatum), goosegrass (Eleusine indica), guineagrass (Panicum maximum), itchgrass (Rottboellia exalicide), Johnson grass (Sorghum halepense), large crabgrass (Digitaria sanguinalis), peanuts (Arachis hypogaea), pitted morningglory (Ipomoea lacunosa), purple nutsedge (Cyperus rotundus), sandbur (Cenchrus echinatus), sourgrass (T
  • Test chemicals were formulated in a non-phytotoxic solvent mixture which included a surfactant and applied preemergence and postemergence to the plants. Untreated control plants and treated plants were placed in the greenhouse and visually evaluated for injury 13 to 21 days after herbicide application. Plant response ratings, summarized in Table E, are based on a 0 to 100 scale where 0 is no injury and 100 is complete control. A dash (-) response means no test result.
  • Dallisgrass 80 Dallisgrass 20
  • Peanuts 60 Peanuts 40
  • Test compounds evaluated in this test were formulated in a non-phytotoxic solvent mixture which includes a surfactant and applied to the soil surface before plant seedlings emerged (preemergence application) and to plants that were in the one-to four leaf stage (postemergence application).
  • a sandy loam soil was used for the preemergence test while a mixture of sandy loam soil and greenhouse potting mix in a 60:40 ratio was used for the postemergence test.
  • Test compounds were applied within approximately one day after planting seeds for the preemergence test.
  • Crop and weed species include annual bluegrass (Poa annua), black nightshade (Solanum nigra), blackgrass (Alopecurus myosuroides), chickweed (Stellaria media), deadnettle (Lamium amplexicaule), downy brome (Bromus tectorum), field violet (Viola arvensis), galium (Gahum aparine), green foxtail (Setaria viridis), jointed goatgrass (Aegilops cylindrica), kochia (Kochia scoparia), lambsquarters (Chenopodium album), little seed canarygrass (Phalaris minor), rape (Brassica napus), redroot pigweed (Amaranthus retroflexus), ryegrass (Lolium multiflorum), scentless chamomile (Matricaria inodora), speedwell (Veronica pers
  • Treated plants and untreated controls were maintained in a greenhouse for approximately 21 to 28 days, after which all treated plants were compared to untreated controls and visually evaluated. Plant response ratings, summarized in Table F, are based upon a 0 to 100 scale where 0 is no effect and 100 is complete control. A dash response (-) means no test result.
  • Treated plants and untreated controls were maintained under greenhouse conditions for twenty to thirty days at which time treated plants were compared to untreated controls and visually evaluated.
  • Plant response ratings, summarized in Table G, are based upon a 0 to 100 scale where 0 is no effect and 100 is complete control. A dash response (-) indicated that no test result was recorded.
  • procumben early 100 100 60 L. procumben early 100 70 20

Abstract

La présente invention concerne des composés représentés par la formule générale (I) ainsi que leurs sels admissibles d'un point de vue agricole. Ces produits conviennent à la lutte contre les végétations parasites. Dans la formule générale (I), Q est représenté par l'une ou l'autre des deux formules spécifiques (Q-1 ou Q-2), A, Y, Z, R1-R7, q et r étant conformes à leurs descriptions dans la demande. L'invention concerne également, non seulement des compositions à base des composés de la formule générale (I), mais également un procédé de lutte contre les végétations parasites, consistant à mettre en contact la végétation ou son milieu avec une quantité suffisante d'un composé de la formule générale (I).
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