.alpha.-Substituted N-phosphonomethyliminodiacetic acid
    1.
    发明授权
    .alpha.-Substituted N-phosphonomethyliminodiacetic acid 失效
    α-取代的N-膦酰甲基亚氨基二乙酸

    公开(公告)号:US4617415A

    公开(公告)日:1986-10-14

    申请号:US743213

    申请日:1985-06-10

    IPC分类号: C07F9/38 C07F9/40

    CPC分类号: C07F9/3813 C07F9/4006

    摘要: A process for the preparation of a glyphosate product. An .alpha.-substituted N-phosphonomethylamino diacetic acid substrate is contacted in an aqueous medium with molecular oxygen in the presence of a catalyst for the oxidative cleavage of a substituent from the imino nitrogen of the substrate. Cleavage produces a glyphosate product, carbon dioxide, a higher aldehyde, or ketone. Novel intermediates and methods of preparation thereof are also disclosed.

    摘要翻译: 制备草甘膦产品的方法。 α-甲基取代的N-膦酰基甲基氨基二乙酸底物在水性介质中与分子氧在催化剂存在下接触,用于从底物的亚氨基氮氧化裂解取代基。 裂解产生草甘膦产物,二氧化碳,高级醛或酮。 还公开了新的中间体及其制备方法。

    Process for the preparation of a glyphosate product
    2.
    发明授权
    Process for the preparation of a glyphosate product 失效
    制备草甘膦产品的方法

    公开(公告)号:US4654429A

    公开(公告)日:1987-03-31

    申请号:US743214

    申请日:1985-06-10

    IPC分类号: C07F9/38 C07F9/40

    CPC分类号: C07F9/3813 C07F9/4006

    摘要: A process for the preparation of a glyphosate product. An .alpha.-substituted N-phosphonomethylamino diacetic acid substrate is contacted in an aqueous medium with molecular oxygen in the presence of a catalyst for the oxidative cleavage of a substituent from the imino nitrogen of the substrate. Cleavage produces a glyphosate product, carbon dioxide, a higher aldehyde, or ketone. Novel intermediates and methods of preparation thereof are also disclosed.

    摘要翻译: 制备草甘膦产品的方法。 α-甲基取代的N-膦酰基甲基氨基二乙酸底物在水性介质中与分子氧在催化剂存在下接触,用于从底物的亚氨基氮氧化裂解取代基。 裂解产生草甘膦产物,二氧化碳,高级醛或酮。 还公开了新的中间体及其制备方法。

    Process for preparation of aromatic thiol esters
    8.
    发明授权
    Process for preparation of aromatic thiol esters 失效
    芳香族硫羟酸酯的制备方法

    公开(公告)号:US5071992A

    公开(公告)日:1991-12-10

    申请号:US623821

    申请日:1990-12-07

    IPC分类号: C07D213/83

    CPC分类号: C07D213/83

    摘要: A process for producing an aromatic thiolester by mixing an alkyl or aryl thiol with an alkali metal hydroxide aqueous solution and, in the presence of a phase transfer catalyst, reacting it with an aromatic acid halide. Diacid halides may be used to produce bisthiol esters.

    摘要翻译: 通过将烷基或芳基硫醇与碱金属氢氧化物水溶液混合并在相转移催化剂的存在下将其与芳族酰卤反应来制备芳族硫醇酯的方法。 二酸卤化物可用于生产二硫醇酯。

    Process for preparing N-phosphonomethylglycine and derivatives
    10.
    发明授权
    Process for preparing N-phosphonomethylglycine and derivatives 失效
    N-膦酰基甲基甘氨酸及其衍生物的制备方法

    公开(公告)号:US4650613A

    公开(公告)日:1987-03-17

    申请号:US687313

    申请日:1984-12-28

    IPC分类号: C07F9/38 C07F9/40

    摘要: There is disclosed a process for the preparation of N-phosphonomethylglycine by dealkylation of N-alkyl-N-phosphonomethylglycine. The N-alkyl moiety contains an electron withdrawing group in the 2-position. Certain novel N-alkyl-N-phosphonomethylglycines are disclosed.

    摘要翻译: 公开了通过N-烷基-N-膦酰基甲基甘氨酸的脱烷基化制备N-膦酰基甲基甘氨酸的方法。 N-烷基部分在2-位含有吸电子基团。 公开了某些新的N-烷基-N-膦酰基甲基甘氨酸。