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
  • A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
• • 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
  • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
  • A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
  • A01N37/22—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides
  • A01N37/24—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides containing at least one oxygen or sulfur atom being directly attached to the same aromatic ring system
• • 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
  • A01N47/08—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 one or more single bonds to nitrogen atoms
  • A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
  • A01N47/20—N-Aryl derivatives thereof
• • 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
  • A01N47/08—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 one or more single bonds to nitrogen atoms
  • A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
  • A01N47/30—Derivatives containing the group >N—CO—N aryl or >N—CS—N—aryl
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C17/00—Preparation of halogenated hydrocarbons
  • C07C17/26—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton
  • C07C17/263—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by condensation reactions
  • C07C17/2635—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by condensation reactions involving a phosphorus compound, e.g. Wittig synthesis

Definitions

• This invention relates to novel herbicidal compounds having the formula in which R 1 is alkyl, lower alkenyl, chloro-lower alkyl, lower cycloalkyl, lower alkoxy, thio-lower alkyl, or R 2 is hydrogen, lower alkoxyalkyl or lower alkanoyl; R 3 and R 4 are independently hydrogen, lower alkyl or lower alkoxy; X and Y are independently chloro, fluoro or bromo; Z is hydrogen, methyl, dimethyl, or one methyl and one chloro substituent; and n is 0 or 1, provided that if n is 1, R 1 is alkyl and R 2 -is hydrogen, then R 1 is an alkyl group having from 1 to 4 carbon atoms.
• alkyl such groups having from 1 to 10, preferably from 1 to 6 carbon atoms, including both straight chain and branched chain groups.
• alkyl groups are methyl, ethyl, n-propyl, isopropyl, butyl, 1-methylbutyl, and 1,1-dimethylbutyl groups.
• lower alkyl By the terms “lower alkyl”, “chloro-lower alkyl”, “lower alkoxy”, “thio-lower alkyl”, “lower alkoxyalkyl” and “lower alkanoyl” are meant such groups having from 1 to 4 carbon atoms. Examples of such groups are methyl, ethyl, isopropyl, n-butyl, methoxy, isopropoxy, ⁇ -chloroethyl, thioethyl, ethoxymethyl, propionyl, and the like.
• lower alkenyl such groups having from 2 to 4 carbon atoms, for example, propenyl and isopropenyl.
• lower cycloalkyl such groups having from 3 to 5 carbon atoms.
• a preferred member of this group is cyclopropyl.
• the compounds are ureas; that is R 1 is .
• R 1 is alkyl, lower alkenyl, chloro-lower alkyl or lower cycloalkyl; the compounds are mono-amides; if R 1 is lower alkoxy the compounds are carbamates; if R 1 is thio-lower alkyl, they are thiocarbamates.
• R 1 is as defined in the previous sentence, the nitrogen-containing group is referred to as the "amide moiety”.
• R i is an amide moiety and R 2 is lower alkanoyl, the compounds are imides.
• R 2 is preferably hydrogen.
• the amide or urea moiety and the halo-substituted cyclopropylmethoxy moiety are substituted on the phenyl ring in the meta position with respect, to each other.
• the two moieties are substituted on the phenyl ring in the para position with respect to each other.
• the two moieties are substituted on the phenyl ring in the para position with respect to each other and a mono-chloro group is substituted on the phenyl ring in the ortho position with respect to the cyclopropylmethoxy substituent.
• This embodiment includes many of the most active compounds of this invention.
• X and Y are both chloro.
• X is chloro and Y is bromo or fluoro.
• X and Y are both chloro and Z is 1-methyl.
• Z is 3-chloro, 3-methyl.
• the compounds of this invention have been found, in general, to be active herbicides; that is, they have been found to be herbicidally effective against various weeds. Weeds, in the broadest sense are plants which grow in locations in which they are not desired.
• the compounds of this invention have varied herbicidal activities; that is, the effect of the compounds on weeds differs according to the structure, with regard to pre- and post-emergence activity and grassy versus broadleafed plant response, as well as varied responses between species.
• the compounds of this invention show at best only moderate general activity as pre-emergence herbicides but are primarily active as post-emergence herbicides at rates of application of up to about 8 pounds per acre or higher.
• the compounds are active primarily against broadleaf weeds; some of the compounds of this invention are active against both broadleaf and grass weeds as post-emergence herbicides.
• novel compounds may be employed as both general and selective herbicides. When employed at high rates they can be used as total weedkillers in places when complete or near complete destruction of vegetation is needed, for example, on railroad trackbeds, shoulders and median strips of highways, vacant lots, etc. When used at lower rates, the compounds may be satisfactory as selective herbicides; several of these compounds have been shown selective control of broadleaf weeds in small grain crops such as wheat and barley, even when applied at low rates.
• A. herbicide as used herein means a compound which controls or modifies the growth of plants.
• herbicidally effective amount is meant an amount of the compound which causes a modifying effect upon the growth of plants.
• plants is meant germinant seeds, emerging seedlings, and established vegetation, including roots and above-ground portions.
• modifiying effects include all deviations from development, for example, killing, retardation, defoliation, desiccation, regulation, stunting,til- lering, stimulation, leaf burn, dwarfing, and the like.
• this invention relates to herbicidal compositions of matter employing the compounds of the present invention in admixture with an inert diluent or carrier.
• this invention relates to a method for controlling undesirable vegetation comprising applying to the locus thereof a herbicidally effective amount of a compound of the present invention.
• the compound is applied subsequent to the emergence of the undesired vegetation at the locus.
• the compounds of the present invention are prepared by:
• R 2 is lower alkoxyalkyl
• R 2 is lower alkoxyalkyl
• a halo alkyl ether such as chloromethyl ethyl ether
• Reaction (a) can be enhanced by the use of a phase transfer catalyst such as a quaternary onium salt.
• a solution was formed by dissolving 6.5 g. (0.03 mole) 3-(2',2'-dichloro-1'-methylcyclopropylmethoxy)aniline, 3.2g. (0.03 mole) ethyl chloroformate and 3.1 g. (0.031 mole) triethylamine in 50 ml. benzene. The solution was refluxed for 3 hours and cooled. Methylene chloride was added and the organic layer was washed with water, dried and evaporated. There was obtained 8.7 g. of the desired product, nD 0 1.5113.
• the flat was filled to a depth of 2" (5.08 cm) with loamy sand oil. Seeds of seven different weed species were planted in individual rows one species per row across the width of the flat. The seeds were covered with soil so that they were planted at a depth of 0.5" (1.27 cm). The seeds used were those of four grasses: hairy crabgrass (Digitaria sanguinalis), yellow foxtail (Setaria glauca), watergrass (Echinochloa crusgalli), red oat (Avena sativa), and three broadleef weeds: redroot pigweed (Amranthus retroflexus), Indian mustard (Brassica juncea) and curly dock (Rumex crispus). Ample seeds were planted to give about 20 to 50 seedlings per row after emergence depending on the size of the plants.
• Seeds of six plant species including three grasses: hairy crabgrass, watergrass, red oat and three broadleaf weeds: mustard, curly dock and pinto beans (Phaseolus vulgaris) were planted in the flats as described above for pre-emergence screening.
• the flats were placed in the green house at 70 bis 85°F. (21.1-29.4 0 C.) and watered daily with a sprinkler.
• the spray was prepared byrweighing out 20 mg. of the test compound, dissolving it in 5 ml.
• the compounds of the present invention are used primarily as post-emergence herbicides and may be applied in a variety of ways at various concentrations.
• the compounds are formulated with an inert carrier, utilizing methods well known to those skilled in the art, thereby making them suitable for application as dusts, sprays, or drenches and the like, in the form and manner required.
• the mixtures can be dispersed in water with the aid of a wetting agent or they can be employed in organic liquid compositions, oil and water, water in oil emulsions, etc., with or without the addition of wetting, dispersing or emulsifying agents.
• An herbicidally effective amount depends upon the nature of the seeds or plants to be controlled and the rate of application may vary from 0.05 to approximately 50 pounds per acre or 0.056-56.2 kg/ha.
• the phytotoxic compositions of this invention employing an herbicidally effective amount of the compounds described herein are applied to the plants in the conventional manner.
• the dust and liquid compositions can be applied to the plant by the use of power-dusters, boom and hand sprayers and spray-dusters.
• the compositions can also be applied from-airplanes as a dust or a spray because they are effective in very low dosages.
• the dust and liquid compositions are applied to the soil according to conventional methods and are distributed in the soil to a depth of at least 1/2 inch below the soil surface.
• phytotoxic compositions be admixed with the soil particles, since these compositions can be applied merely by spraying or sprinkling the surface of the soil.
• the phytotoxic compositions of this invention can also be applied by addition to irrigation water supplied to the filled to be treated. This method of application permits the penetration of the compositions into the soil as the water is absorbed therein. Dust compositions, granular compositions or liquid formulations applied to the surface of the soil can be distributed below the surface of the soil by conventional means such as discing, dragging or mixing operations.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Dentistry (AREA)
• Environmental Sciences (AREA)
• Agronomy & Crop Science (AREA)
• Pest Control & Pesticides (AREA)
• Plant Pathology (AREA)
• Zoology (AREA)
• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)

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Citations (2)

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• 1977
  • 1977-06-21 US US05/807,940 patent/US4149874A/en not_active Expired - Lifetime
• 1978
  • 1978-05-25 IL IL54783A patent/IL54783A/xx unknown
  • 1978-05-30 AU AU36640/78A patent/AU515316B2/en not_active Expired
  • 1978-06-01 EP EP78100019A patent/EP0000324B1/de not_active Expired
  • 1978-06-01 DE DE7878100019T patent/DE2860186D1/de not_active Expired
  • 1978-06-02 ZA ZA00783180A patent/ZA783180B/xx unknown
  • 1978-06-09 CA CA000305144A patent/CA1232287A/en not_active Expired
  • 1978-06-13 BR BR787803787A patent/BR7803787A/pt unknown
  • 1978-06-14 RO RO94359A patent/RO83446B/ro unknown
  • 1978-06-14 DK DK266578A patent/DK266578A/da not_active Application Discontinuation
  • 1978-06-15 PH PH21266A patent/PH13812A/en unknown
  • 1978-06-16 JP JP53072288A patent/JPS5838422B2/ja not_active Expired
  • 1978-06-16 YU YU01436/78A patent/YU143678A/xx unknown
  • 1978-06-19 AR AR272661A patent/AR220713A1/es active
  • 1978-06-19 IT IT49918/78A patent/IT1105426B/it active
  • 1978-06-19 DD DD78206108A patent/DD137318A5/de unknown
  • 1978-06-19 BG BG7840140A patent/BG30613A3/xx unknown
  • 1978-06-20 HU HU78SA3116A patent/HU184675B/hu unknown
  • 1978-06-20 CS CS784058A patent/CS199733B2/cs unknown
  • 1978-06-20 PL PL1978207767A patent/PL110841B1/pl not_active IP Right Cessation
• 1982
  • 1982-06-14 JP JP57100820A patent/JPS6059901B2/ja not_active Expired
  • 1982-10-07 YU YU02263/82A patent/YU226382A/xx unknown

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