Preparation of N-phosphonomethylglycine
    2.
    发明公开
    Preparation of N-phosphonomethylglycine 失效
    N-膦酰基甲基甘氨酸的制备

    公开(公告)号:EP0097522A3

    公开(公告)日:1984-03-21

    申请号:EP83303559

    申请日:1983-06-21

    CPC classification number: C07F9/4006 C07C255/00 C07F9/3813

    Abstract: A process for the preparation of N-phosphonomethyt- glycine characterised in that it comprises:
    (a) reacting 1,3,5-tricyanomethylhexahydro-1,3,5-triazine with an acyl chloride corresponding to the following general formula:
    wherein X represents chlorine, bromine or iodine; and R represents an aliphatic or aromatic group; to form the N-cyanomethyl-N-chloromethyl amide of the acyl chloride corresponding to the following general formula:
    wherein X and R are as defined above; (b) reacting the amide formed in (a) with a phosphite corresponding to the following general formuia:
    wherein R 1 and R 2 represent both aromatic groups or both aliphatic groups; and R 3 represents an aliphatic group or an alkali metal; to form a phosphonate corresponding to the following general formula
    wherein R' and R 2 are as defined above; and (c) hydrolyzing the phosphonate formed in (b) to yield N-phosphonomethylglycine is disclosed. Thus, an improved production for a valuable herbicide is provided.

    Abstract translation: 一种制备N-膦酰甲基甘氨酸的方法,其特征在于它包括:(a)使1,3,5-三氰基甲基六氢-1,3,5-三嗪与对应于下列通式的酰氯反应:其中X代表 氯,溴或碘; 并且R表示脂族或芳族基团; 以形成对应于下列通式的酰氯的N-氰甲基-N-氯甲基酰胺:其中X和R如上所定义; (b)使在(a)中形成的酰胺与对应于下列通式的亚磷酸酯反应:其中R 1和R 2表示两个芳族基团或两个脂族基团; 和R3表示脂族基团或碱金属; 以形成对应于下列通式的膦酸酯其中R'和R2如上所定义; 和(c)公开了水解(b)中形成的膦酸酯以产生N-膦酰基甲基甘氨酸。因此,提供了有价值的除草剂的改进生产。

    Iminooxazolidines, process of preparation and method of use
    8.
    发明公开
    Iminooxazolidines, process of preparation and method of use 失效
    亚氨基恶唑烷,维他命Zu ihrer Herstellung und ihre Verwendung。

    公开(公告)号:EP0265162A1

    公开(公告)日:1988-04-27

    申请号:EP87309069.0

    申请日:1987-10-14

    CPC classification number: A01N43/76 C07D263/28

    Abstract: An iminooxazolidine having the formula
    wherein
    X and Y are the same or different and are selected from the group consisting of hydrogen, cyano, acyl, alkyl, alkylthio, haloalkyl, haloalkylthio, alkylsulfenyl, alkoxy, carboalkoxy and haloalkoxy wherein the alkyl groups have from 1 to 5 carbon atoms;
    n is the integer 1 or 2; provided that when Y is hydrogen, at least one X is other than hydrogen; and
    R hydrogen or is a lower alkyl group having from 1 to 3 carbon atoms, preferably an ethyl group, and herbicidally effective salts thereof.

    Abstract translation: 具有式的亚氨基恶唑烷,其中X和Y相同或不同,并且选自氢,氰基,酰基,烷基,烷硫基,卤代烷基,卤代烷硫基,烷基亚硫酰基,烷氧基,烷氧羰基和卤代烷氧基,其中烷基 具有1至5个碳原子; n是整数1或2; 条件是当Y是氢时,至少一个X不是氢; R氢或为具有1至3个碳原子的低级烷基,优选乙基,以及除草有效的盐。

    Process for preparing substituted p-chlorophenyl aliphatic nitriles
    9.
    发明公开
    Process for preparing substituted p-chlorophenyl aliphatic nitriles 失效
    一种用于脂族腈的取代的对 - Chlorphenylderivaten的制备方法。

    公开(公告)号:EP0045088A1

    公开(公告)日:1982-02-03

    申请号:EP81105930.2

    申请日:1981-07-27

    CPC classification number: C07C255/00

    Abstract: 3-Methyl-2-p-chlorophenyl butyrylnitrile is useful as an intermediate for preparing the (±)-cyano(3-phenoxyphenyl)methyl ester of (±)-3-methyl-2-(4-chlorophenyl) butanoic acid which is useful as an insecticide and acaricide.

    Abstract translation: 3-甲基-2-对 - 氯苯基butyrylnitrile是作为中间有用在对于(+/-)制备 - 的氰基(3-苯氧基苯基)甲基酯(+/-) - 3-甲基-2-(4-氯苯基) 丁酸所有这些是作为杀虫剂和杀螨剂有用。

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