Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
  • C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
  • C07D233/66—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members 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
  • C07D233/90—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
• • 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
  • A01N43/50—1,3-Diazoles; Hydrogenated 1,3-diazoles

Definitions

• This invention relates to a biocidal composition containing as active ingredients at least one imidazole compound of formula (I) shown below and at least one other specific compound.
• imidazole compounds of formula (I) shown below are useful as a biocide for controlling harmful organisms, which were found by the inventors of the present invention as described in European Patent 298,196A.
• the present invention relates to a biocidal composition for controlling harmful organisms containing, as active ingredients, at least one imidazole compound represented by formula (I): ##STR2## wherein R 1 represents a phenyl group, a halogen-substituted phenyl group, an alkyl group, or a halogen-substituted alkyl group; and Rz represents a halogen atom, and at least one compound selected from the group consisting of azole compounds, quinoxaline compounds, dithiocarbamate compounds, organic chlorine compounds, benzimidazole compounds, pyridinamine compounds, cyanoacetamide compounds, phenylamide compounds, sulfenic acid compounds, copper compounds, isoxazole compounds, organophosphorus compounds, N-halogenothioalkyl compounds, dicarboximide compounds, benzanilide compounds, benzamide compounds, piperazine compounds, pyridine compounds, pyrimidine compounds, piperidine compounds, morpho
• the halogen atom includes fluorine, chlorine, bromine, and iodine atoms.
• the alkyl group contains from 1 to 4 carbon atoms and mention may be made of, for example, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, isobutyl group, tert-butyl group, etc.
• a biocidal composition wherein the compound which is used in admixture with the imidazole compounds represented by formula (I) is at least one compound selected from the group consisting of azole compounds, quinoxaline compounds, dithiocarbamate compounds, organic chlorine compounds, benzimidazole compounds, pyridinamine compounds, cyanoacetamide compounds, phenylamide compounds, sulfenic acid compounds, copper compounds, isoxazole compounds, organophosphorus compounds, dicarboximide compounds, benzanilide compounds, and benzamide compounds.
• a biocidal composition wherein the imidazole compound is represented by formula (I'): ##STR3## wherein R 1 ' represents a phenyl group or a halogen-substituted alkyl group; and R 2 ' represents a chlorine atom.
• a biocidal composition whose main use is for a fungicide.
• the imidazole compounds represented by formula (I) include compounds represented by formula (I-a) and/or compounds represented by formula (I-b): ##STR4##
• JP-A as used herein means a "published unexamined patent application”.
• the imidazole compounds represented by formula (I) can be prepared, for example, by the following reaction schemes. ##STR6## wherein Z represents a hydrogen atom, a chlorine atom, or a bromine atom; Y represents a chlorine atom, a fluorine atom, a bromine atom, or an iodine atom; Y' represents a chlorine atom, a bromine atom, or an iodine atom; and R 1 is as defined above. ##STR7## wherein Y, R 1 , and R 2 are as defined above.
• Step 1 of process A and Process B are carried out, if desired, in the presence of a solvent and an acid acceptor.
• the solvent which can be used includes aromatic hydrocarbons, e.g., benzene, toluene, xylene, chlorobenzene, etc.; cyclic or acyclic aliphatic hydrocarbons, e.g., chloroform, carbon tetrachloride, methylene chloride, dichloroethane, trichloroethane, n-hexane, cyclohexane, etc.; ethers, e.g., diethyl ether, dioxane, tetrahydrofuran, etc.; ketones, e.g., acetone, methyl ethyl ketone, methyl isobutyl ketone, etc.; nitriles, e.g., acetonitrile, propionitrile, etc.; and aprotic polar solvents, e.g., dimethylformamide, N-methylpyrrolidone, dimethyl sul
• the acid acceptor which can be used includes inorganic bases such as alkali metal hydroxides, e.g., sodium hydroxide and potassium hydroxide, alkali metal or alkaline earth metal carbonates, e.g., anhydrous potassium carbonate and anhydrous calcium carbonate, alkali metal hydrides, e.g., sodium hydride, and alkali metals, e.g., metallic sodium; and organic basis, e.g., triethylamine.
• inorganic bases such as alkali metal hydroxides, e.g., sodium hydroxide and potassium hydroxide, alkali metal or alkaline earth metal carbonates, e.g., anhydrous potassium carbonate and anhydrous calcium carbonate, alkali metal hydrides, e.g., sodium hydride, and alkali metals, e.g., metallic sodium; and organic basis, e.g., triethylamine.
• Step 1 of Process A and Process B can be effected in the presence of an appropriate catalyst, such as a phase transfer catalyst (e.g., quaternary ammonium salt derivatives).
• a phase transfer catalyst e.g., quaternary ammonium salt derivatives
• the compound of formula (II) includes tautomers represented by the following formulae: ##STR9## wherein R 1 and R 2 are as defined above.
• reaction mixture was poured into water and extracted with methylene chloride.
• the extract was washed with water and dried over anhydrous sodium sulfate.
• the solvent was removed by distillation, and the residue was purified by silica gel column chromatography using methylene chloride as a developing solvent to obtain 28.0 g of 2-cyano-1-dimethylsulfamoylimidazole having a melting point of from 74 to 76° C.
• reaction mixture was poured into water and extracted with 500 ml of ethyl acetate.
• the ethyl acetate layer was washed with water and dried over anhydrous sodium sulfate.
• the ethyl acetate was removed by distillation, and the residue was purified by silica gel column chromatography using methylene chloride as a developing solvent and separated to give 4.8 g of 2-cyano-1-dimethylsulfamoyl-5-n-propylimidazole having a melting point of from 51 to 52° C.
• the acetonitrile was removed by distillation from the reaction mixture. After pouring 100 ml of water into the residue, the resulting mixture was extracted with 50 ml of methylene chloride. The extract was washed with water and dried over anhydrous sodium sulfate. The methylene chloride was removed by distillation, and the residue was allowed to stand overnight at room temperature. The analysis of the residue revealed that one of the two isomers in the mixture decomposed and returned to the starting 4(5)-chloro-2-cyano-5(4)-n-propylimidazole.
• reaction mixture was poured into water and extracted with chloroform. After washing with water, the extracted layer was dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure, and the residue was purified by silica gel column chromatography (developing solvent: methylene chloride) to give 1.28 g of 4(5)-chloro-2-cyano-5(4)-phenylimidazole having a melting point of from 149° to 151° C.
• reaction mixture was poured into water and extracted with ethyl acetate. After washing with water, the extracted layer was dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure, and the residue was then purified by silica gel column chromatography (developing solvent: methylene chloride) to give 0.5 g of 4(5)-chloro-2-cyano-1-dimethylsulfamoyl-5(4)phenylimidazole having a melting point of from 106° to 109° C.
• the compound described above was found to be an isomeric mixture of 4-chloro-2-cyano-1-dimethylsulfamoyl-5-phenylimidazole and 5-chloro-2-cyano-1-dimethylsulfa- moyl-4-phenylimidazole in almost equal ratios.
• biocidal compositions according to the present invention comprising the imidazole compound of formula (I) in combination with other specific compound, are particularly useful as agricultural fungicides. Specifically, they exhibit excellent effects of controlling diseases of crop plants such as rice blast caused by Pyricularia oryzae, rice sheath blight caused by Rhizoctonia solani, cucumber anthracnose caused by Colletotrichum lagenarium, cucumber powdery mildew caused by Sphaerotheca fuliginea, cucumber downy mildew caused by Pseudoperonospora cubensis, tomato late blight caused by Phytophthora infestans, tomato early blight caused by Alternaria solani, citrus melanose caused by Diaporthe citri, citrus common green mold caused by Penicillium digitatum, pear scab caused by Venturia nashicola, apple alternaria blotch caused by Alternaria mali, grape downy mildew caused by Plasmopara viticola,
• biocidal compositions of the present invention exhibit excellent effects of controlling diseases such as potato or tomato late blight caused by Phytophthora infestans, cucumber downy mildew caused by Pseudoperonospora cubensis, grape downy mildew caused by Plasmopara viticola, tobacco blue mold caused by Peronospora tabacina; and various soil diseases caused by phycomycetes such as Plasmodiophora, Aphanomyces, Pythium, etc.
• diseases such as potato or tomato late blight caused by Phytophthora infestans, cucumber downy mildew caused by Pseudoperonospora cubensis, grape downy mildew caused by Plasmopara viticola, tobacco blue mold caused by Peronospora tabacina
• various soil diseases caused by phycomycetes such as Plasmodiophora, Aphanomyces, Pythium, etc.
• biocidal compositions of the present invention have a prolonged residual effect so that they exhibit an excellent preventive effect, and also exhibit an excellent curative effect as well. It is therefore possible to control diseases by treatment after infection. In addition, since they possess a systemic activity, it is also possible to control diseases of the stem and leaf by soil treatment.
• biocidal compositions of the present invention show an excellent controlling effect against agriculturally and horticulturally harmful insects such as planthoppers, diamondback moth (Plutella xylostella), green rice leafhopper (Nephotettix cincticeps), adzuki bean weevil (Callosobruchus chinensis), common cutworm (Spodoptera litura), green peach aphid (Myzus persicae), etc.; mites such as twospotted spider mite (Tetranychus urticae), carmine spider mite (Tetranychus cinnabarinus), citrus red mite (Panonychus citri), etc.; and nematodes such as southern root-knot nematode (Meloidogyne incognita), etc.
• the compounds constituting the biocidal composition of the present invention can be formulated into a variety of forms, such as emulsifiable concentrates, dusts, wettable powders, aqueous solutions, granules, suspension concentrates, etc., together with various adjuvants, as in conventional agricultural preparations.
• the imidazole compound of formula (I) and the other specific compound may be mixed and formulated, or each of the compounds may be separately formulated and then mixed together.
• the preparation may be used as such or as diluted with an appropriate diluent, e.g., water, to a predetermined concentration.
• adjuvants examples include carriers, emulsifying agents, suspending agents, dispersing agents, spreaders, penetrating agents, wetting agents, thickeners, stabilizers, etc. These adjuvants can be added appropriately according to necessity.
• the carriers are classified into solid carriers and liquid carriers.
• the solid carriers include animal and vegetable powders, e.g., starch, sugar, cellulose powders, cyclodextrin, activated charcoal, soybean powders, wheat powders, chaff powders, wood powders, fish powders, powdery milk, etc., and mineral powders, e.g., talc, kaolin, bentonite, bentonite-alkylamine complexes, calcium carbonate, calcium sulfate, sodium bicarbonate, zeolite, diatomaceous earth, white carbon, clay, alumina, silica, sulfur powders, etc.
• animal and vegetable powders e.g., starch, sugar, cellulose powders, cyclodextrin, activated charcoal, soybean powders, wheat powders, chaff powders, wood powders, fish powders, powdery milk, etc.
• mineral powders e.g., talc, kaolin, bentonite, bentonite
• the liquid carriers include water, animal and vegetable oils, e.g., soybean oil, cotton seed oil, etc., alcohols, e.g., ethyl alcohol, ethylene glycol, etc., ketones, e.g., acetone, methyl ethyl ketone, etc., ethers, e.g., dioxane, tetrahydrofuran, etc., aliphatic hydrocarbons, e.g., kerosene, lamp oil, liquid paraffin, etc., aromatic hydrocarbons, e.g., xylene, trimethylbenzene, tetramethylbenzene, cyclohexane, solvent naphtha, etc., halogenated hydrocarbons, e.g., chloroform, chlorobenzene, etc., acid amides, e.g., dimethylformamide, etc., esters, e.g., ethyl acetate, fatty acid gly
• a suitable mixing ratio of the imidazole compound of formula (I) and other specific compound usually ranges from 1:300 to 300:1, preferably from 1:100 to 100:1, and more preferably from 1:50 to 5:1, by weight.
• concentration of the biocidal composition of the present invention is hard to specify as it varies depending on the crop to which the composition is applied, the method of application, the preparation form, the dose to be applied, and the like.
• concentrations of the imidazole compound of formula (I) and the specific compound to be combined are from 1 to 1,000 ppm and from 1 to 5,000 ppm, respectively, in the case of foliar treatment, and those in the case of soil treatment are from 10 to 10,000 g/ha and from 10 to 50,000 g/ha, respectively.
• biocidal compositions according to the present invention are hereinafter given for illustrative purposes only but not for limitation.
• Tomato (cultivars: Ponderosa) was cultivated in a polyethylene pot having a diameter of 7.5 cm.
• 10 ml of a solution obtained from each of test compounds adjusted to a predetermined concentration was sprayed over tomato using a spray gun.
• a zoosporangium suspension of fungi of late blight (Phytophthora infestans) was inoculated by spraying.
• Five days after the inoculation an area of lesion on the leaves was investigated, and an index of control was determined according to the following standard. The results obtained are shown in Tables 2-1 through 2-6.
• the controlling effect was determined by visually observing a degree of disease of a test plant and expressed by the following 5 grades of the index of control.
• Test Example 1 A test similar to Test Example 1 was carried out. The degree of disease has visually observed to determine the index of control according to the following standard for evaluation. The results obtained are shown in Tables 3-1 through 3-3.
• Cucumber (cultivars: Suyo) was cultivated in a polyethylene pot having a diameter of 7.5 cm.
• a spore suspension of fungi of downy mildew (Pseudoperonospora cubensis) was inoculated by spraying.
• 10 ml of a solution of each of test compounds adjusted to a predetermined concentration was sprayed over cucumber using a spray gun.
• an area of lesion on the first leaf was visually observed to determine the index of control according to the standard of Test Example 2. The results obtained are shown in Tables 5-1 through 5-3.
• Cucumber (cultivars: Suyo) was cultivated in a polyethylene pot having a diameter of 7.5 cm.
• 10 ml of a solution obtained from each of test compounds adjusted to a predetermined concentration has sprayed over cucumber using a spray gun.
• a mycelial disc having a diameter of 5 mm of fungi of gray mold (Botrytis cinerea) was inoculated on the first leaf.
• Three days after the inoculation a length of lesion was investigated, and an index of control was determined according to the standard of Test Example 2. The results shown in Table 6 were obtained.
• Rice plant (cultivars: Chukyo Asahi) was cultivated in a polyethylene pot having a diameter of 7.5 cm.
• 20 ml of a solution obtained from each of test compounds adjusted to a predetermined concentration was sprayed over rice plant using a spray gun.
• rice straw in which fungi of sheath blight (Rhizoctonia solani) had been previously incubated was set between leaf sheath portions to inoculate.
• a length of lesion was investigated, and an index of control was determined according to the standard of Test Example 2. The results shown in Table 7 were obtained.
• Mycelial disc (agar punching) of preincubated Pythium aphanidermatum was transplanted on potato-dextrose agar medium (PDA medium) containing 100 ppm of streptomycin and a predetermined concentration of each of test compounds. After incubation at 22° C. for 48 hours, a diameter of mycellium was measured. Inhibition of hyphal growth (%) was determined by the following equation. The results shown in Table 8 were obtained. ##EQU1##
• the above components are uniformly mixed to prepare a wettable powder.
• a wettable powder can be prepared in the same manner as in Formulation Example 1, except for replacing Compound No. A-1b with 25 parts by weight of Compound No. A-12b and replacing Compound No. D-3 with 25 parts by weight of Compound No. I-1.
• a wettable powder can be prepared in the same manner as in Formulation Example 1, except for replacing Compound No. D-3 with Compound No. K-1.
• the above components are uniformly mixed to prepare a wettable powder.
• a wettable powder can be prepared in the same manner as in Formulation Example 4, except for replacing Compound No. G-1 with Compound No. F-1.
• a wettable powder can be prepared in the same manner as in Formulation Example 4, except for replacing Compound No. G-1 with Compound No. O1.
• the above components are uniformly mixed to prepare a wettable powder.
• a mixture consisting of the above components is mixed with Compound No. A-1b and Compound No. I-1 at a weight mixing ratio of 8:1:1 to prepare a wettable powder.
• the above components are uniformly mixed to prepare a dust.
• the above components are mixed and finely pulverized to prepare a suspension concentrate.
• a suspension concentrate can be prepared in the same manner as in Formulation Example 14, except for replacing Compound No. D-3 with Compound No. E-2.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Dentistry (AREA)
• Wood Science & Technology (AREA)
• Plant Pathology (AREA)
• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Agronomy & Crop Science (AREA)
• General Health & Medical Sciences (AREA)
• Pest Control & Pesticides (AREA)
• Zoology (AREA)
• Environmental Sciences (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Plural Heterocyclic Compounds (AREA)
• Saccharide Compounds (AREA)
• Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Applications Claiming Priority (4)

Publications (1)

Family

ID=26399005

Family Applications (1)

Country Status (16)

Cited By (5)

Families Citing this family (14)

Citations (1)

Family Cites Families (2)

• 1989
  • 1989-02-27 MY MYPI89000236A patent/MY129863A/en unknown
  • 1989-03-03 IL IL89475A patent/IL89475A0/xx not_active IP Right Cessation
  • 1989-03-06 DE DE8989103887T patent/DE68904792T2/de not_active Expired - Fee Related
  • 1989-03-06 ES ES89103887T patent/ES2014385T3/es not_active Expired - Lifetime
  • 1989-03-06 EP EP89103887A patent/EP0337103B1/de not_active Expired - Lifetime
  • 1989-03-06 DE DE198989103887T patent/DE337103T1/de active Pending
  • 1989-03-06 AT AT89103887T patent/ATE85498T1/de active
  • 1989-03-07 AU AU31093/89A patent/AU609264B2/en not_active Ceased
  • 1989-03-07 PH PH38294A patent/PH25549A/en unknown
  • 1989-03-09 NZ NZ228284A patent/NZ228284A/xx unknown
  • 1989-03-09 BR BR898901097A patent/BR8901097A/pt not_active Application Discontinuation
  • 1989-03-10 KR KR1019890002940A patent/KR890013985A/ko not_active Application Discontinuation
  • 1989-03-10 PT PT89972A patent/PT89972B/pt not_active IP Right Cessation
  • 1989-03-10 CN CN89101331A patent/CN1036879A/zh active Pending
  • 1989-03-10 HU HU891195A patent/HU205833B/hu not_active IP Right Cessation
  • 1989-03-13 US US07/322,460 patent/USH811H/en not_active Abandoned
• 1991
  • 1991-07-31 GR GR90300071T patent/GR900300071T1/el unknown
• 1993
  • 1993-03-05 GR GR930400468T patent/GR3007247T3/el unknown

Patent Citations (1)

Also Published As

Similar Documents

Legal Events