Herbicidally active .alpha.-(4-phenoxyphenoxy)propionic acid alkoxyalkyl
amides, herbicidal compositions containing them and their use
    4.
    发明授权
    Herbicidally active .alpha.-(4-phenoxyphenoxy)propionic acid alkoxyalkyl amides, herbicidal compositions containing them and their use 失效
    除草活性α-(4-苯氧基苯氧基)丙酸烷氧基烷基酰胺,含有它们的除草组合物及其用途

    公开(公告)号:US4243410A

    公开(公告)日:1981-01-06

    申请号:US1515

    申请日:1979-01-08

    申请人: Beat Bohner Otto Rohr

    发明人: Beat Bohner Otto Rohr

    CPC分类号: A01N39/02

    摘要: The present invention relates to novel herbicidally active 4-(p-trifluoromethylphenoxy)-.alpha.-phenoxypropionic acid alkoxyalkyl amides, processes for their manufacture and also herbicidal compositions which contain them. The preferred utility of the novel compounds is the selective control of monocotyledonous weeds.The novel compounds have the general formula I ##STR1## wherein "alkylene" represents a straight or branched saturated hydrocarbon chain of 1 to 4 carbon atoms and R represents an alkyl radical of 1 to 4 carbon atoms.The novel compounds are obtained by reacting a halide or lower alkyl ester of 4-(p-trifluoromethylphenoxy)-.alpha.-phenoxypropionic acid with an alkoxyalkyl amineH.sub.2 N-alkylene-O-Ror by reacting a hydroxydiphenyl ether ##STR2## wherein Y is hydrogen or a cation, with an .alpha.-halopropionic acid alkoxyalkyl amide of the formula ##STR3## in the presence of an acid acceptor. Preferred compounds of the formula I are an N-(2-methoxy)-ethylamide and N-(3-methoxy)-propyl-(2)-amide.

    摘要翻译: 本发明涉及新颖的除草活性4-(对三氟甲基苯氧基)-α-苯氧基丙酸烷氧基烷基酰胺,其制备方法以及含有它们的除草组合物。 新化合物的优选用途是单子叶杂草的选择性控制。 新化合物具有通式I(I),其中“亚烷基”表示1至4个碳原子的直链或支链饱和烃链,R表示1至4个碳原子的烷基。 通过使4-(对三氟甲基苯氧基)-α-苯氧基丙酸的卤代物或低级烷基酯与烷氧基烷基胺H 2 N-亚烷基-OR反应或通过羟基二苯基醚(IMAGE)与Y是氢或 阳离子,在酸受体的存在下与式“IMAGE”的α-卤代丙酸烷氧基烷基酰胺反应。 优选的式I化合物是N-(2-甲氧基) - 乙基酰胺和N-(3-甲氧基) - 丙基 - (2) - 酰胺。

    Cyanomethyl ester of
4-(p-trifluoromethylphenoxy)-.alpha.-phenoxypropionic acid and a method
of controlling weeds therewith
    9.
    发明授权
    Cyanomethyl ester of 4-(p-trifluoromethylphenoxy)-.alpha.-phenoxypropionic acid and a method of controlling weeds therewith 失效
    4-(对三氟甲氧基苯氧基)-α-苯氧基丙酸的氰基甲酯和一种控制杂草的方法

    公开(公告)号:US4226614A

    公开(公告)日:1980-10-07

    申请号:US008624

    申请日:1979-02-01

    申请人: Beat Bohner Otto Rohr

    发明人: Beat Bohner Otto Rohr

    CPC分类号: C07C255/00 A01N39/02

    摘要: The present invention provides a novel herbicidally active ester, namely the cyanomethyl ester of 4-(p-trifluoromethylphenoxy)-.alpha.-phenoxypropionic acid of the formula ##STR1## It is a further object of the invention to provide a herbicidal composition which contains this novel ester as active component and also a post-emergence method of selectively controlling monocotyledonous weeds in crops of dicotyledonous plants. The invention furthermore provides a process for the manufacture of the novel ester by methods which are known per se by reaction of a corresponding trifluoromethyl-phenoxy-.alpha.-phenoxypropionic acid halide with hydroxyacetonitrile (cyanomethanol) or by reaction of 4-(p-trifluoromethylphenoxy)-phenol with a .alpha.-halopropionic acid cyanomethyl ester.

    摘要翻译: 本发明提供了一种新颖的除草活性酯,即下式的4-(对三氟甲基苯氧基)-α-苯氧基丙酸的氰甲基酯。本发明的另一个目的是提供一种除草组合物,其含有该新颖的 酯作为活性成分,也是在双子叶植物的作物中选择性地控制单子叶杂草的芽后方法。 本发明还提供了一种通过相应的三氟甲基 - 苯氧基-α-苯氧基丙酸卤化物与羟基乙腈(氰基甲醇)的反应或通过4-(对三氟甲基苯氧基) 苯酚与α-卤代丙酸氰甲酯。