Process for the preparation of fluorinated pyridine derivatives
    1.
    发明授权
    Process for the preparation of fluorinated pyridine derivatives 失效
    制备氟化吡啶衍生物的方法

    公开(公告)号:US4831148A

    公开(公告)日:1989-05-16

    申请号:US784017

    申请日:1985-10-04

    摘要: In accordance with a novel process, 2,3-difluoropyridines of formula I ##STR1## wherein X is halogen or trifluoromethyl, are prepared by diazotising a 3-amino-2-halopyridine of formula II ##STR2## wherein X is as defined for formula I and Y is bromine, chlorine or fluorine, in the presence of hydrogen fluroide, to give a 3-fluoro-2-halopyridine of formula III ##STR3## wherein X and Y are as defined for formula II, and treating resultant 3-fluoro-2-halopyridines of formula III, wherein Y is bromine or chlorine, with a fluorinating agent.The 2,3-difluoropyridines prepared by the novel process are valuable intermediates for the preparation of 2-[4-(3-fluoropyridin-2-yloxy)-phenoxy]propionic acid derivatives which are known as herbicides.

    摘要翻译: 根据新方法,通过重氮化式II的3-氨基-2-卤代吡啶(II)制备其中X为卤素或三氟甲基的式I(I)的2,3-二氟吡啶,其中式 X如式I所定义,Y是溴,氯或氟,在氢氟酸存在下,得到式III的3-氟-2-卤代吡啶(III),其中X和Y如对于 并且用氟化剂处理其中Y是溴或氯的式III的3-氟-2-卤代吡啶。 通过新方法制备的2,3-二氟吡啶类是制备称为除草剂的2- [4-(3-氟吡啶-2-基氧基) - 苯氧基]丙酸衍生物的有价值的中间体。

    Herbicidal and plant growth regulating pyridyloxy-phenoxy-propionic acid
derivatives
    5.
    发明授权
    Herbicidal and plant growth regulating pyridyloxy-phenoxy-propionic acid derivatives 失效
    除草剂和植物生长调节吡啶氧基 - 苯氧基 - 丙酸衍生物

    公开(公告)号:US4325729A

    公开(公告)日:1982-04-20

    申请号:US206518

    申请日:1980-11-13

    摘要: The present invention concerns new .alpha.-[4-(5'-trifluoromethyl-pyrid-2'-yl)oxy-phenoxy]-propionic-acid derivatives of the formula ##STR1## wherein R.sub.1 and R.sub.2 independently are hydrogen, halogen, cyano or lower alkyl, andZ is a radical --COR.sub.3 or a 2-oxazoline group, whereby R.sub.3 is the hydroxyl group or a salt form thereof, or is an ester, thioester, amide or hydrazide group on said propionic acid.These new propionic acid derivatives have herbicidal and plant growth regulating activity and may be worked up into compositions containing them.

    摘要翻译: 本发明涉及式IMA的新的α-[4-(5'-三氟甲基 - 吡啶-2'-基)氧基 - 苯氧基] - 丙酸衍生物,其中R 1和R 2独立地是氢,卤素,氰基或 低级烷基,Z为-COR 3或2-恶唑啉基,其中R3为羟基或其盐形式,或为所述丙酸的酯,硫酯,酰胺或酰肼基。 这些新的丙酸衍生物具有除草和植物生长调节活性,并且可以加工成含有它们的组合物。

    Herbicidally active unsaturated esters of halogenated
.alpha.-[4-(pyridyl-2'-oxy)-phenoxy]-propionic acids
    6.
    发明授权
    Herbicidally active unsaturated esters of halogenated .alpha.-[4-(pyridyl-2'-oxy)-phenoxy]-propionic acids 失效
    卤化α-[4-(吡啶基-2'-氧) - 苯氧基] - 丙酸的除草活性不饱和酯

    公开(公告)号:US4300944A

    公开(公告)日:1981-11-17

    申请号:US2923

    申请日:1979-01-12

    CPC分类号: C07D213/643 A01N43/40

    摘要: A class of herbicidal unsaturated esters of .alpha.-[4-(3',5'-dihalogeno-pyridyl-2'-oxy)-phenoxy]-propionic and -thiolpropionic acid of the formula ##STR1## wherein Hal is chlorine or bromine, X is oxygen or sulfur, and R is an unsubstituted or halogenated aliphatic or alicyclic radical which may contain nitrogen, and which possesses at least one double and/or triple bond, with the proviso that if X is oxygen, R is not an unsubstituted alkenyl radical. These new esters are useful for selective post-emergent control of grassy weeds in cultivated plants such as wheat, barley, rice and soybean.

    摘要翻译: 一类式(Ia)的α-[4-(3',5'-二卤代吡啶-2'-氧) - 苯氧基] - 丙酸和硫代丙酸的除草不饱和酯,其中Hal是氯或溴, X是氧或硫,R是可以含有氮的未取代或卤化的脂族或脂环族基团,并且具有至少一个双键和/或三键,条件是如果X是氧,则R不是未取代的烯基 激进。 这些新的酯类可用于小麦,大麦,水稻和大豆等栽培植物中草地杂草的选择性突发后控制。

    Pyridyloxy-phenoxy-.alpha.-propionic acid aminoalkyl esters
    7.
    发明授权
    Pyridyloxy-phenoxy-.alpha.-propionic acid aminoalkyl esters 失效
    吡啶氧基 - 苯氧基-α-丙酸氨基烷基酯

    公开(公告)号:US4213774A

    公开(公告)日:1980-07-22

    申请号:US5538

    申请日:1979-01-22

    CPC分类号: C07D213/643 A01N43/40

    摘要: Pridyloxy-phenoxy-propionic acid-amino-alkyl esters having a herbicidal action, their production, compositions containing them, and the use thereof are described. The esters correspond to the formula ##STR1## in which X is halogen or trifluoromethyl,Y is hydrogen, halogen or trifluoromethyl,Z is oxygen or sulfur,"alkylene" is a straight-chain or branched-chain C.sub.2 -C.sub.6 alkyl group, andQ is an amino or ammonium group.

    摘要翻译: 描述了具有除草作用的丙氧基 - 苯氧基 - 丙酸 - 氨基 - 烷基酯,它们的生产,含有它们的组合物及其用途。 酯对应于其中X为卤素或三氟甲基,Y为氢,卤素或三氟甲基,Z为氧或硫的式“IMAGE”,“亚烷基”为直链或支链C2-C6烷基, Q是氨基或铵基。

    .alpha.-[4-(3-Fluoro-5'-halopyridyl-2'-oxy)-phenoxy]-propionic acid
derivatives having herbicidal activity
    9.
    发明授权
    .alpha.-[4-(3-Fluoro-5'-halopyridyl-2'-oxy)-phenoxy]-propionic acid derivatives having herbicidal activity 失效
    具有除草活性的α-[4-(3-氟-5'-卤代吡啶基-2'-氧) - 苯氧基] - 丙酸衍生物

    公开(公告)号:US4505743A

    公开(公告)日:1985-03-19

    申请号:US450815

    申请日:1982-12-20

    CPC分类号: C07D213/643 A01N43/40

    摘要: There are described novel .alpha.-[4-(3'-fluoro-5'-halopyridyl-2'-oxy)-phenoxy]-propionic acid esters and -thioesters having a herbicidal action and an action reducing the growth of grasses, which compounds correspond to the formula I ##STR1## wherein Q is oxygen or sulfur,Hal is halogen, andR is hydrogen, a metal cation, an ammonium group, an unsubstituted or substituted alkyl, cycloalkyl, alkenyl or alkynyl group, or an imino ether group --N.dbd.C R.sub.1 R.sub.2, in which R.sub.1 and R.sub.2 separately are each alkyl, or together they form a 4- or 5-membered methylene chain.These compounds are suitable for selectively controlling weeds in crops of cultivated plants, or for reducing the growth of grasses.

    摘要翻译: 描述了具有除草作用和降低禾本科生长的作用的新型α-[4-(3'-氟-5'-卤代吡啶基-2'-氧) - 苯氧基] - 丙酸酯和硫酯,该化合物 对应于式I(I)其中Q是氧或硫,Hal是卤素,R是氢,金属阳离子,铵基,未取代或取代的烷基,环烷基,烯基或炔基,或 亚氨基醚基-N = C R1R2,其中R1和R2各自为烷基,或一起形成4-或5-元亚甲基链。 这些化合物适用于选择性地控制栽培植物作物中的杂草或减少草的生长。

    Herbicidally active unsaturated esters of halogenated
.alpha.-[4-(pyridyl-2'-oxy)-phenoxy]-propionic acids
    10.
    发明授权
    Herbicidally active unsaturated esters of halogenated .alpha.-[4-(pyridyl-2'-oxy)-phenoxy]-propionic acids 失效
    卤化α-[4-(吡啶基-2'-氧) - 苯氧基] - 丙酸的除草活性不饱和酯

    公开(公告)号:US4422867A

    公开(公告)日:1983-12-27

    申请号:US279505

    申请日:1981-07-02

    CPC分类号: C07D213/643 A01N43/40

    摘要: A class of herbicidal unsaturated esters of .alpha.-[4-(3',5'-dihalogeno-pyridyl-2'-oxy)-phenoxy]-propionic and -thiolpropionic acid of the formula ##STR1## wherein Hal is chlorine or bromine, X is oxygen or sulfur, and R is an unsubstituted or halogenated aliphatic or alicyclic radical which may contain nitrogen, and which posseses at least one double and/or triple bond, with the proviso that if X is oxygen, R is not an unsubstituted alkenyl radical. These new esters are useful for selective post-emergent control of grassy weeds in cultivated plants such as wheat, barley, rice and soybean.

    摘要翻译: 一类式(Ia)的α-[4-(3',5'-二卤代吡啶-2'-氧) - 苯氧基] - 丙酸和硫代丙酸的除草不饱和酯,其中Hal是氯或溴, X是氧或硫,R是可以含有氮的未取代或卤化的脂族或脂环族基团,并且其具有至少一个双键和/或三键,条件是如果X是氧,则R不是未取代的烯基 激进。 这些新的酯类可用于小麦,大麦,水稻和大豆等栽培植物中草地杂草的选择性突发后控制。