• 专利附录
  • 专利说明
  • 权利要求
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  • 优先权
    • 专利摘要:
    The invention relates to 2-cyanobenzamidazole (PC) derivatives, in particular compounds of the formula -N-502-2 where n is 0-3; R is halogen; C, -C4 alkyl, unsubstituted or substituted by one or more halogen atoms; C, -C-alkoxyl, not substituted or substituted by several halogen atoms, C, -C-alkylthio group, not substituted or substituted by several halogen atoms; benzyloxy-HO, di-nium alkylamino, CN, SN; lower alkylsulfonyl- (C-C4) -sulfamine; lower alkylsulfonyl (C, -C) -benzoyl; alkoxycarbonyl- (), moreover, when n is 1, then R may be the same or different; R is lower alkyl, substituted by several halogen atoms, an amino group, substituted by one or two lower alkyls, the same or different, or a nitrogen atom, substituted by two pyrrolidine radicals, or interconnected by an oxygen atom to form a morpholino group, having fungicidal and acaricidal activity, and which can be used in medicine. In order to detect the activity in a number of cyanobenzimidazoles, new I were obtained. Their synthesis is carried out from the corresponding 2-cyanobenzimidazole. With a sulfohalide in an aprotic organic solvent medium in the presence of an acid acceptor. Testing of QCs indicates that they are effective acaricides and fungicides. 3 tab. SU) from 4 05 4 00 cm
    公开号:SU1346043A3
    申请号:SU843726703
    申请日:1984-04-16
    公开日:1987-10-15
    发明作者:Родон Раймон；Сантини Жорж
    申请人:Рон-Пуленк Агрошими (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a process for the preparation of new 2-cyanobenzimidazole derivatives exhibiting fungicidal and acaridide activity.
    The purpose of the invention is a method for producing new 2-cyanobenzimidazole derivatives, which have a new effect for this range of compounds, namely, fungicidal and acaridide, which allow them to be used in agriculture.
    The following examples illustrate the preparation of the compounds of the invention. The structure of the compounds described in these examples was confirmed by NMR spectroscopy and / or infrared spectrometry.
    Example 1. Preparation of 1-dimethylsulfamoyl-2-dianobenzimidazole.
    To a solution of 0 g of 2-cyanobenzimidazole in 100 ml of acetonitrile was added 4.83 g of anhydrous potassium carbonate, then 7 ml of K, H-dimethyl yulphamoyl chloride and 1.8 g of tetra-butylammonium bisulfate,
    The mixture was then heated under reflux for 3 hours. After cooling to about 25 ° C, 300 ml of ethyl acetate was added. After that, the reaction mixture is filtered and the filtrate is concentrated under reduced pressure (0.032 bar). The resulting solid is recrystallized and 200 ml of diisopropyl ether.
    Thus, 5.3 g (yield 30.3%) of 1-dimethylsulfamoyl -2 -2-cyanobenzimidazole are obtained, m.p. 93 C
    Calculated,%: C, 47.99; H 4.03; N 22.38; O 12.78; S 12.81,
    Found,%: C 48.31; H 4.10; N 22.46; O 12.27; S 13.00,
    The 2-cyanobenzimidazole used as the starting material is obtained by the action of ammonia on 2-trichloromethylbenzimidazole.
    2-Cyanobenzimidazole is also prepared as follows
    Within 1 hour, 79 g of 2-oxyiminomethyl-benzimidazole is added to 300 ml of sulphinyl chloride; the addition is exothermic and causes evolution of gases. The reaction mixture is heated under reflux for another 2.5 hours; after cooling, it is diluted with 200 ml of petroleum ether. The precipitate obtained is filtered off and then washed with potassium carbonate solution.
    After recrystallization from a mixture of acetonitrile and ethyl acetate, 42.5 g (60.6%) of 2-cyanobenzimidazole are obtained, m.p.
    Example 2 Preparation of 1-dimethylsulfamoyl-2 cyano-5-chlorobenzimidazole (compound 2A) and 1-dimethylsulfamoyl-2-cyano-6-chlorobenzimidazole (compound 2B)
    To a suspension of 8 g of 2-cyano-5-chlorobenzimidazole in 100 ml of acetone, dried over. 2.87 g of potassium hydroxide B are added as flakes,
    After about 30 minutes, the potassium hydroxide dissolves and the reaction mixture becomes almost homogeneous. Then 4.85 ml of dimethylsulfamoyl chloride is added at once and the reaction mixture is stirred for 18 hours. This reaction mixture is then filtered, after which the filtrate is concentrated under reduced pressure (0.026 bar) at about 50 ° C.
    a pink-white solid is obtained which is recrystallized from 150 ml of isopropanol, and 6.5 g of a white solid are obtained, melting at
    130 ° C
    According to NMR and IR spectroscopy, this compound is analyzed as a mixture, in approximately equal proportions, of 1-dimethylsulfamoyl-2-cyano-5-chlorobenzimidazole and 1-dimethylsulfamoyl--2-cyano-6-chlorobenzimidazole, and this mixture of isomers has the elemental composition below.
    Calculated,%: C 42.18; H 3.18;
    C1 2.45; N 19.68; O 11.24; S 11.26,
    Found,%: C 42.28; H 3.18; C1 12.41; N 19.42; O 11.27; S 11.20,
    These two isomers are then separated chromatographically on silica CIPH using flash chromatography and thus separated 1-dimethylsulfamoyl-2-cyano-5-chlorobenzimidazole (compound 2A) and 1-dimethylsulfamoyl-2-cyano-6-chlorobenzimidazole (compound 2B) are obtained. ), One of these compounds melts at 147 ° C, and the second at 167 ° C,
    Example 3, Preparation of 1-isopropylsulfonyl-2-cyano-5-trifluoro-methyl-benzene radazolol (compound 3A) and 1-isopropylsulfonyl-2-cyano-6-trifluoromethylbenzimidazole (compound CB),
    13
    To a solution of 12 g of 2-cyano-5-trifluoromethylbenzimidazole in 100 ml of acetone was added 3.62 g of potassium hydroxide in the form of flakes.
    After stirring for 15 minutes at 25 ° C, 6.35 ml of isopropylsulfonyl chloride is added. The mixture is then maintained for 2 hours at reflux temperature of the solvent, then concentrated after cooling. The resulting solid residue is dissolved in 250 ml of methylene chloride and the resulting


    the solution is washed twice with 200 ml of 15 each from the appropriate starting with distilled water. After drying, compounds 6A- 73 are prepared. The methylene chloride solution of the formula and melting point of these compounds are centered, then the resulting residue is formed of the compounds or their mixtures, as well as recrystallized from 50 ml of isopropanol or mixtures described in nola. Thus, 11.2 g of the 20 preceding examples are obtained. Presents. (Yield 61.9%) of a white solid melting at 120 C.
    According to NMR and LC spectroscopy, this compound is analyzed as
     in tabl .. 2.
    The elemental analysis data is given in Table 3.
    Example 7. Tests in oranzmes mixture of approximately equal shares of 1-iso-25 to 15 mildew of tomato.
    propylsulfonyl-2-cyano-5-trifluoromethylbenzimidaeol (compound 3A) and 1-isopropylsulfonyl-2-cyano-6-trifluoromethylbenzimidazole (compound
    Tomato plants (Lyupersicum esculentum) varieties of Marmande are cultivated in cups. When these plants reach the age of 1 IU
    ZV), and this mixture of isomers has zo (stage 5-6 leaves, height 12 elemental composition.
    Calculated,%: C 45.42; H 3.18; F 17.96; N 13.24; S 10,10.
    Found,%: C, 45.56; H 3.03; F 17.93; N -13.07; S 10.07.
    Example 4. Preparation of 1-methylsulfonyl-2-cyano-5-trifluoromethylbenzimidazole (compound 4A) and 1-methylsulfonyl-2-cyano-6-trifluoromesh1benzimidazole (compound 4B).
    Obtained according to the method described in example 3, starting from the corresponding starting materials, only solvent for recrystallization
     15 cm), they are treated by spraying with an aqueous suspension or solution of the test substance, at the desired concentration, and
    35 containing 0.02% condensate monosol of sorbitan monosol with 20 ethyl oxide molecules. Each tomato plant receives about 5 ml of solution or dispersion. For each concentration of test active principle, treatment was carried out on 8 plants. Used as control plants are treated with a solution that does not contain the active principle, and
    is toluene instead of isopropanol. containing 0.02% of the same contact, a mixture (78/22) of compounds 4A and 4B is obtained. Mp, mixtures 142 C,
    Calculated,%: C, 41.52; H 2.09; 14.53; S 11.08 ..
    N
    sorbitan Q mono-oleate with ethylene oxide.
    After drying for 4 hours, 5Q each plant is contaminated with aulverization and contaminated with an aqueous suspension of spores of Phytophthora infestans responsible for the tomato paste, approximately 1 ml per plant (or about spores per plant).
    N
    Found,%: C 42.85; H 2.08; 15.22; S 10,10.
    Example 5. Preparation of 1-dimethylsulfamoyl-2-cyano-5-trifluoromethylbenzimidazole (compound 5A) and -1-dimethylsulfamyl-2-cyano-6-trifluoromethylbenzimidazole (compound 5B).
    Prepared according to the method described in Example 3, starting from the corresponding starting materials. Thus, a mixture is obtained in approximately equal proportions of compounds 5A and 5B. T. pl. mixtures of 20 ° C.
    Calculated,%: C 41.51; H 2.85; F 17.91; N 12.60; About 10.05; S 10.07.
    Found,%: C 41.53; H 2.75; F 17.87; N 12.12; O 11.50; S 10.14.
    Example 6. Receive according to one or the other of the methods described in examples 1 and 3, the outcome
    from the corresponding starting compounds, and compounds 6A-73 are prepared. The formulas and melting points of these compounds or their mixtures, as well as the compounds or mixtures described in the preceding examples, are represented by
     in tabl .. 2.
    The elemental analysis data is given in Table 3.
    Example 7. Tests in orange Tomato plants (Lyupersicum esculentum) varieties of Marmande are cultivated in cups. When these plants reach the age of 1 month
     15 cm), they are sprayed with an aqueous suspension or solution of the test substance, at the desired concentration, and
    35 containing 0.02% sorbitan monosoleate condensate with 20 ethylene oxide molecules. Each tomato plant receives about 5 ml of solution or dispersion. For each concentration of test active principle, treatment was carried out on 8 plants. Used as control plants are treated with a solution that does not contain the active principle, and
    sorbitan Q mono-oleate with ethylene oxide.
    After drying for 4 hours, 5Q each plant is contaminated with aulverization and contaminated with an aqueous suspension of spores of Phytophthora infestans responsible for the tomato paste, approximately 1 ml per plant (or about spores per plant).
    After this infection, tomato plants are incubated for 3 days at approximately 20 ° C in a saturated moisture atmosphere, then for 4 days.
     55
    In this experiment, a percentage of inhibition of the development of the fungus in question was observed, amounting to 20–90%; at a dose of 500 mg / l for compounds 8, 11, 28, 43.47, 50 and for mixtures (35А + 35В), (46А + 46В), (62А + 62Б) and (54А + 54В); at a dose of 15 mg / l for compounds 17 (ZZA + ZZV), (37A-t-37B); at a dose of 8 mg / l for compound 39; at a dose of 4 mg / l for compound 45,
    Comparison 2-Cyanobenzimidazole, described and tested under the same conditions, showed a minimum or inhibitory concentration of CMI 95-100 2000 mg / l, therefore, much higher than that (62 mg / l) for dimethylsulfamoyl-2-cyanobenzimidazole (compound one).
    Consequently, it is observed that, according to this test, the replacement of the hydrogen atom located on the nitrogen in position I in the cycle by a dimethylsulfonyl radical allows a marked increase in antifungal activity.
    Example 8, Greenhouse test on mildew tobacco.
    They work as in Example 7, only plants are tobacco plants (Nicotiona tabacum) Samson species, and these plants infect with Peronospora tabacina spores, responsible for tobacco mildew.
    1346043
    Under these conditions, it is observed that for the compounds or mixtures of the compounds described in the previous examples, the minimum inhibitory concentrations causing a 95-100% inhibition of the fungus in question (CMI 95-100) are, respectively.

    The test compounds are CMI (95-100) or a mixture of peronospora
    tabaci mg / l
    130
    2A2
    2B2
    2А + 2В2
    FOR + ZV2
    5A + 5B1 6A + 6B Better or equal to 62
    7А + 7В 2
    7A4
    7B4
    92
    1062
    1162 13A-IZV125
    141
    15А + 15В4
    1862
    19А + 19В15
    2116
    238
    2431 25A + 25В1
    2631
    In this experiment, 20% to 90% inhibition of the growth of the fungus in question was observed: at a dose of 500 mg / l for compounds 38, 42 and 44 and for mixtures (31A + 31B), (41A + 41B) and (53A + 53B), 28; at a dose of 15 mg / l for compounds 16, 22, 57, 64 and for mixtures (4А + 4В), (12А + 12В), (35А + 35В), (37А + 37В) and (54А + 54В); at a dose of 8 mg / l for compound 21,
    Comparison 2-Tsnanobenzimidazol, described and tested according to those
    five
    ten
    15
    20
    five

    346043
    Under the same conditions, it does not show any antifungal activity at a dose of 1000 mg / l (% 0% inhibition).
    Under the same conditions, 1-dimethylsulfamoyl-2-cyanobenzimidazole (compound 1) has a minimum inhibitory concentration (CMI 95-100) equal to 300 mg / l.
    Example 9 Acaricidal activity by contact — administration to the stomach (foliage treated by wetting; Tetranychus urticaeKoch, parthenogenetic females).
    Prepare an aqueous emulsion of the test active ingredient by adding Potter crusher in water containing 0.02% Tween-80. The aqueous emulsion is then adjusted to the desired concentration by dilution with water containing 0.01% of Scurol-0.
    Tween-80 is a sorbitan monoleate condensate with 20 ethylene oxide molecules.
    Skurel-0 is an octylphenol condensate with 10 moles of ethylene oxide.
    Bean plants (phase-olus vulgaris variety Contender) are used at the seed stage. Each plant is treated by wetting the leaves for 10 seconds in an aqueous emulsion containing the test active principle, at the desired concentration, using two plants for each concentration. The experiment was carried out for concentrations of the active principle, reaching up to 2000 ± 10 mg / l. Beans are planted in order to keep them alive by immersing the roots and base of the stem in distilled water.
    After drying the surface of the leaves, infection is carried out by placing on each leaf of the bean a fragment of a leaf that is heavily infected and originates from tick breeding. This piece of sheet is removed after 24 hours.
    Three days after infection, the number of dead ticks and the number of live ticks are counted through a binocular loupe.
    Thus, it is determined for
    for each concentration, the percentage of death (average of two experiments). From these percentages, the concentration that causes the death of 90% of mites is determined.
    thirty
    35
    40
    45
    SO
    55
    To connect; 5 or mixtures of the compounds described above, this concentration is as follows, mg / l:

    26 900 70 30 30
    2000 10 30
    Examples 7 and 8 illustrate the good antifungal activity of the proposed compounds. In another experiment performed on grapes using mixtures (2A + 2B) and (7A + 7B), it was observed that treatments carried out using broths that contain 15-60 g / One or other of these mixtures and applied up to the limit of flow on grape plants provide good protection against mildew grapes (Plasmopara viticola).
    Example 9 illustrates the good acaricidal activity by contact-injection (in the stomach) of some of the proposed compounds. In another experiment carried out on the leaves of a bean infected with the eggs of the same tick as in Example 9, it was observed that these same compounds have good acaricidal (ovicidal) activity due to contact.
    Example 10. Mildew potato experiment (Phytophtora infestans).
    The potatoes of the Bintzhe type were planted on 26 ma based on approximately 8 plants (tubers) per work.
    A row of potatoes was placed around each single case, which was used partly as a control sample, and partly for artificial infection, produced on July 12 with the help of sheets infected with mildew potatoes.
    During this period of planting potatoes, four ras were processed.
    12
    0
    five
    0
    for, respectively, July 11, July 25, August 3 and August 12, using an aqueous dispersion prepared by diluting a wetting powder with water, with the following weight composition: active substance (derived from cyano-2-benzimidazole) 50%; wetting agent (ATL OX 4853 V) —a mixture of anionic and non-ionic surfactants based on calcium alkyl aryl sulfonate and polyethoxylated fatty acid ester 2%; dispersing agent - sodium lignosulfonate 6%; silica anticoagulant nt 2%; kaolinite to 100%,
    The treatment was carried out using sprinklers at a rate of approximately 1000 l / ha.
    As a product of comparison, the use of mancozeb produced
    as fungicide, I
    The control was made on August 29.
    The percentage of diseased young leaves was calculated, on the one hand, in the case of an unprocessed control sample (St), and on the other hand, in the case of treated plants (Nx) using the proposed formulations and a comparative product.
    Then calculated the efficiency ratio (K)
    , .one. to."",.
    In this trial, the value was 61%. The activity coefficients calculated by the above method are shown in Table. one.
    five
    0
    0
    Table
    5А + 5В
    7А + 7В
    75 150 300
    75 150
    57 65 91 86 90
    Mancozeb (comparative product) 1600
    66
    Based on these results, it should be noted that the proposed formulations have a protective fungicidal activity at a dose of 300 g / ha than in a comparative product at a dose of 1600 g / ha. Some of the proposed compounds also show superiority at a dose of 75 g / ha.
    Example 11. Mildew test of grapes (Plasmopara viticola),
    Several groups of five grapevines, 20 cm apart, were irrigated from spring to early August by spraying very finely so as to cause severe mildew infestation.
    During this period, the grape vines were processed 8 times from 1 May to 22 August, on average, with an interval of 13 days using an aqueous dispersion obtained by adding water to a wettable powder of the same composition as in the previous example.
    Treatments were carried out using p sprinklers with an average consumption of 800 l / ha.
    As in the previous example, mancozeb was used as a comparative product.
    The development of mildew spread on clusters was evaluated on 2 August. Then determined the percentage of affected grapes, on the one hand, in the case
    unworked control sample (S,
    51.6%), and on the other hand.
    in the case of the treated plants (Sj), and the efficiency ratio was calculated from the equation:
    istisxijigo
    f
    (%)
    0
    five
    0
    five
    0
    five
    0
    five
    about
    five
    On September 13, the development of mildew spread on the leaves, which marked O (completely affected leaf) to 10 (fully protected stored leaf), was determined, and protection was achieved as the average of many repetitions.
    Based on these results, it should be noted that the proposed formulations at a dose of 480 g / ha have better fungicidal efficacy than the control (compared) product at a dose of 2.240 g / ha.
    Example 12. Mildew potato experiment (Phytophtora infestans).
    Potato varieties Bindje planted on 6 July at the rate of about 8 tubers per case nku. Several rows of potatoes are planted around each case, which are artificially infected with mildew (Phytophtora infestaus) on August 10 during the rainy season.
    Plantings of potatoes are treated before infection on August 2, then, after infection, on August 16 and 22.
    The treatment is carried out at a rate of 1000 l / ha of broth containing 7.5 g / hl of the active substance, prepared by diluting the wetted powder with water with the following compound 7
    J3CI, / o
    Active substance
    (a derivative of 2-cyanobenzimidazole) 50
    Wetting agent
    ATLOX 4853B (mix
    anionic and non-ionic
    agents) 2.5
    Dispersant (sodium lignosulfonate
    neutral) 5
    Inert carrier 42,5
    August 30, i.e. 7 days after the last treatment, the percentage of infestation (S,) of leaf surfaces treated with the proposed compounds is calculated. Calculate the same percentage of infection (S,) surface
    151
    leaves in control untreated plants.
    Thus, the coefficient of antifungicidal activity is calculated.
    Ko eff. C --- X 100 (%) S
    Get the following coefficients antifungicidal activity:
    unity 5A-I-5B 7A + 7B 73
    9 56А + 56В
    72
    Ratio% 20 30 80
    90 95
    95
    The use of the compounds of the formula
    Ordinary: solutions, concentrates, powders.
    Example 13. Acaricidal activity on Panonychusulm.
    The experiment was performed with compound 60A + 60B and with two new compounds, labeled 74 and 75.
    For ETHC experiments, wettable powders (50% PM) with a concentration of 50% are used, identical to those described in Example 12, but replacing the active substance with a mixture of 60A + 60B, as well as aqueous suspensions with 500 g / l FLO containing, g / l; .
    Active substance 500
    th nvatel (Cemulsol
    870: synthetic alcohol
    ten
    15
    20
    4604316
    with C ,, polyethoxylated) 10
    Dispersant (Soprophor FL: salt-forming ethoxylated poly-arylphenol phosphate) 50
    Antifreeze (propylene - glycol) 100
    Thickener (Rhodopol 23: polysaccharide) 1.6
    Biocide: sodium-containing 4-methyloxybenzoate 3,3 Water Sufficient
    amount 1 l
    As an active substance: TWA in this suspension was subjected to the test: a mixture of 60A + 60B, compound 74 and a mixture of 75A + 75V.
    These concentrated compositions are diluted with water to obtain diluted compositions (aqueous suspensions and / or dispersions) containing 60 g / hl of the active substance. The experience has been in a fruit garden on a Staroning blondes, about ten years old and located on various small plots of land,
    thirty
    On June 29, 25 leaves are taken and the number of mites (Panonychus ulmi) living on the sheet is determined, then sprayed with a mixture of diluted compositions described above at a rate of 1000 liters of the diluted composition per hectare.
    The second treatment is carried out under the same conditions on July 13.
    July 16 or 3 days after post-treatment, 25 leaves are taken and the average number of mites living on the leaf is calculated.
    In this way, the coefficient of acaricidal efficacy K is calculated (work according to the method of Example 12).
    table 2
    1O
    2A1 (5) -C1
    2B1 (6) -C1

    93
    A mixture of 50/50 130
    17
    1346043
    18 Continuation of table 2
    Continued table. 2
    23
    1346043
    24 Continued tabl. 2
    25
    1346043
    26
    Continued table. 2
    29
    1346043
    thirty
    Food was eaten. 3
    331346043
    Continued table. 3
    35
    1346043
    36
    Continued table. 3
    37
    1346043
    38
    Continuation of table 3
    39
    1346043
    40 Continuation of table. 3
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    The method of obtaining 2-cyanobenzimidazole derivatives of the general formula
      -T -SOf where p O, 1, 2 or 3;
    R, is halogen, lower C, -C4-alkyl, unsubstituted or substituted by one or more halogen atoms, lower C, -C4-alkoxy, unsubstituted or substituted by several halogen atoms, lower GI-C4-alkylthio, not 5
    0
    five
    K „substituted or substituted by several halogen atoms, benzyloxyamino, di-lower-alkylamino, nitro, cyano, thiocyanogroup, lower alkylsulfonyl C, -Cd-sulfamine, lower alkyl C, -C4 sulfonyl, benzyl, C-C4-alkoxycarbonyl, provided that when n is greater than 1, the substituents R may be the same or different;
    lower alkyl, substituted by several halogen atoms, amino group, substituted by one or two lower
    41
    alkyl, the same or different, or a nitrogen atom,
    substituted by two radicals forming pyrrolidine with this nitrogen atom, or interconnected by an oxygen atom and forming a morpholino group,
    characterized in that a 2-cyano-benzimidazole of the general formula
    1346043
    42
    CN
    -NH
    where R, and p are specified with a halide of the formula
    X - R,
    meanings
    SO, R,
    Where
    2
    X has the indicated meanings;
    halogen,
    in the medium of an aprotic organic solvent in the presence of an acid acceptor.
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    DE3360804D1|1985-10-24|
    GB2114567B|1985-10-30|
    FR2521141B1|1984-03-16|
    PL240471A1|1984-07-02|
    JPS58148864A|1983-09-05|
    PL135987B1|1986-01-31|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8202281A|FR2521141B1|1982-02-09|1982-02-09|
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