• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention concerns new pyridyloxy-phenoxy-alkanecarboxylic acid derivatives of the formula <IMAGE> wherein A is hydrogen, halogen, alkyl, alkoxy, cyano, nitro or carbothiamide B is hydrogen, halogen, alkyl, cyano, mono- or dialkylamino, alkoxy-carbonyl or carbothiamide C is hydrogen, halogen, cyano, nitro or carbothiamide D is hydrogen, halogen, alkyl, mono- or dialkylamino R1 is hydrogen, alkyl, alkoxyalkyl or benzyl R is the rest of the acid a salt or an ester, WITH THE PROVISO THAT IF THE PYRIDINE RING IS SUBSTITUTED BY HALOGEN AND/OR ALKYL AND C is also halogen, then the radicals A, B and D must contain no less than two halogen atoms or alkyl radicals.
    公开号:SU710499A3
    申请号:SU772505504
    申请日:1977-07-22
    公开日:1980-01-15
    发明作者:Шуртер Рольф；Ремпфлер Херманн
    申请人:Циба-Гейги Аг (Фирма)；
    IPC主号:
    专利说明:

    I
    This invention relates to chemical agents for controlling weeds and undesirable vegetation. namely, to the herbicidal agent containing the active ingredient from. the number of derivatives-aryloxyalkanoic acids and auxiliary components from the group of liquid or solid carriers, surfactants, etc.
    Herbicidal agents based on aryloxyalkanoic carboxylic acid derivatives are known. These include, for example, an agent based on - ((pyridyloxy) -phenoxy-alkanecarboxylic acids and their derivatives I, as well as on the basis of (4-trifluoromethylphenoxy) -phenoxy-propionic acid and its derivatives 2. However, known products of this type are not sufficiently effective in respect to certain types of weeds.
    The aim of the invention is a new herbicidal agent based on an aryloxyalkanecarboxylic acid derivative, which has an increased herbicidal activity and selectivity of action.
    This goal is achieved by the fact that as an active substance
    herbicidal agents use aryloxyalkanecartonic acid derivative of general formula I
    odH- dooR,
    where A is hydrogen, chlorine, methokemyl cyano;
    c with hydrogen or methyl; . hydrogen, chlorine, bromine, cyano; .
    D R
    hydrogen., chlorine, bromine, methyl; hydrogen, C-C3 alkyl or a cation of an organic or inorganic base.
    The content of the active substance in the herbicidal agent is in the range of 1-80 wt.%.
    The forms of application of the active substances are ordinary: solutions, emulsions, suspensions, pastes, powders, etc. They are prepared by well-known techniques,
    The method for the preparation of compounds of general formula I is based on the reaction of the corresponding 2-halopyridines with 2- (4-hydroxyphenoxy) propionic acid derivatives in the presence of a base. They are also prepared by the interaction of 4- (2 gshrdyldioxy) -phenols with 2-halogenopropioic acid and its derivatives in the presence of a base.
    Below are the compounds of general formula I, studied as active substances of a herbicidal agent, and examples illustrating the effectiveness of the latter. 5 T a b i c a 1
    Example 1, Pre-emergence Processing,
    Seeds of experimental plants were sown in the prepared soil under conditions of 45
    greenhouses and the next day the soil was treated with preparative forms of active substances (aqueous emulsions) at the rate of 4 and 16 kg / ha
    on active ingredient. After this, the plants were grown under greenhouse conditions for 21 days and evaluated by a ninth gallic gericlitic elite.
    Pre-emergence treatment
    2. Post-emergence
    Sample processing.
    Experimental plants grown under greenhouse conditions up to the stage of 4-6 leaves were treated with preparative
    scale: 9 - no effect, 1 is full of plant death.
    The results of the experiment are presented in table. 2,
    table 2
    Forms of active substances and 15 days after treatment, the herbicidal effect was evaluated according to the indicated scale. Dose of active ingredients 4.kg / ha. The results of the experiment are presented in table.3. Pospevyshodovaya processing
    Example 3
    Post-harvest processing.
     The experiment was carried out under the conditions of Polymer 2, when plant development reached 2-4 leaves. (Ocala assessment is the same, For comparison, known gervicidal substances were used:
    Table
    A. 2-Iodoethyl ester h -phenoxypropionic acid {Swiss Patent No. 545586).
    B. 2-Iodoethyl ester of 3-nitrobenzoic acid (Swiss Patent 545586). The results of the experiment are presented
    at 4.
    Post-harvest processing
    The results of the experiments show that the compounds according to the invention are much more effective than the known weed herbicides and are selective for wheat and rice.
    权利要求:
    Claims (2)
    [1]
    Invention Formula
    Herbicidal agent containing .aryloxyalkanecarboxylic derivative
    ten
    T a blitz 4
    acids as an active substance, as well as auxiliary components from the group of liquid or solid carriers, surfactants, characterized in that in order to enhance the herbicidal activity, it contains as aryloxyalkano carboxy derivative a compound of the general Formula B D ... „,. ,, LJ - О - Ъ-о1 n-yoob ,, с- (JH-0- () oen-YOOE .. B where A is hydrogen, chlorine, methoxy-g or cyano group; B is hydrogen, or methyl; C is hydrogen, chlorine, bromine, pianbgouppa- .. cyano group, D is hydrogen, chlorine, bromine, methyl; QR is hydrogen, C-C3 alkyl or organic cation or inorganic base, in the amount of 1-80 wt.%. Sources of information taken into account in the examination 1. USSR patent 634640, and-mD m M Q / OV1 IT 1Л / кл.А 01 N 9/24, 17.10. 74 (prototype)
    [2]
    2. Patent of the USSR 634639, kl.A 01 N 9/24, 14.10,74.
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    同族专利:
    公开号 | 公开日
    IL52572D0|1977-10-31|
    CA1100973A|1981-05-12|
    DE2732846C2|1991-01-10|
    FR2359129A1|1978-02-17|
    FR2359129B1|1980-01-18|
    US4253866A|1981-03-03|
    US4133675A|1979-01-09|
    JPH0116831B2|1989-03-27|
    LV5151A3|1993-10-10|
    AU2723877A|1979-01-25|
    JPS5315382A|1978-02-13|
    AU513286B2|1980-11-27|
    IT1080773B|1985-05-16|
    NL7708185A|1978-01-25|
    DE2732846A1|1978-01-26|
    ES460957A1|1978-12-01|
    GB1561616A|1980-02-27|
    IL52572A|1980-06-30|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH947176A|CH622170A5|1976-07-23|1976-07-23|Herbicidal composition containing, as active ingredient, pyridyloxyphenoxyalkanecarboxylic acid derivatives|
    CH947076A|CH622169A5|1976-07-23|1976-07-23|Herbicidal composition containing, as active ingredient, pyridyloxyphenoxyalkanecarboxylic acid derivatives|
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