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    Process for the preparation of alkane- and arenesulfonamides
    7.
    发明公开
    Process for the preparation of alkane- and arenesulfonamides 失效
    Verfahren zur Herstellung von Alkan- und Arensulfonamiden。

    公开(公告)号：EP0439687A1

    公开(公告)日：1991-08-07

    申请号：EP90120562.5

    申请日：1990-10-26

    Applicant: ATOCHEM NORTH AMERICA, INC.

    Inventor： Sandler, Stanley Robert ,  Schon, Steven Gabriel ,  Gardner, David Milton

    IPC: C07C303/38 ,  C07C311/03

    CPC classification number: C07C303/38 ,  C07C311/03

    Abstract: A process for the preparation of alkane- and arenesulfonamides in high purity and yield is provided. Ammonia or alkylamine is reacted under boiling conditions with an alkane- or arenesulfonyl halide in the absence of an added solvent. The heat of reaction is dissipated by the heat of vaporization of the ammonia or alkylamine.

    Abstract translation: 提供了一种以高纯度和高产量制备烷烃和芳烃磺酰胺的方法。 在不存在加入的溶剂的情况下，氨或烷基胺在沸腾条件下与烷烃或芳烃磺酰卤反应。 反应的热量由氨或烷基胺的蒸发热消散。

    Preparation of alkanesulfonyl halides and alkanesulfonic acids
    9.
    发明公开
    Preparation of alkanesulfonyl halides and alkanesulfonic acids 失效
    Herstellung von Alkansulfonylhaliden undAlkansulfonsäuren。

    公开(公告)号：EP0331864A1

    公开(公告)日：1989-09-13

    申请号：EP89100154.7

    申请日：1989-01-05

    Applicant: ATOCHEM NORTH AMERICA, INC. (a Pennsylvania corp.)

    Inventor： Gardner, David Milton ,  Wheaton, Gregory Alan

    IPC: C25B3/02

    CPC classification number: C25B3/02

    Abstract: A continuous method is provided for preparing alkanesulfonyl halides, particularly chlorides and alkanesulfonic acids in high yields without the formation of undesirable side-products, and without the net production of hydrogen chloride as a by-product. The method involves the continuous electrolysis of an alkanethiol (RSH) or dialkyl disulfide (RSSR′) in an aqueous hydrochloric acid-containing solution, continuously removing the electrolyzed product mixture from the electrolysis zone, and recovering the alkanesulfonyl chloride (RSO₂Cl) or alkanesulfonic acid (RSO₃H) product from the mixture. The alkyl groups in the dialkyl disulfide (R and R′) may be straight or branched chain, substituted or unsubstituted, have 1 to 20 carbon atoms, preferably 1 to 12 carbon atoms, and may be different, but are preferably the same. The aqueous hydrochloric acid-containing medium and any unreacted sulphur compounds may be recycled through the electrolysis chamber.

    Abstract translation: 提供了一种连续的方法，用于以高产率制备烷基磺酰卤，特别是氯化物和烷烃磺酸，而不形成不期望的副产物，并且不产生作为副产物的氯化氢。 该方法包括在含盐酸水溶液中连续电解烷硫醇（RSH）或二烷基二硫化物（RSSR min），从电解区连续除去电解产物混合物，回收烷基磺酰氯（RSO2Cl）或烷烃磺酸 （RSO3H）产物。 二烷基二硫化物中的烷基（R和R min）可以是直链或支链，取代或未取代的，具有1至20个碳原子，优选1至12个碳原子，并且可以不同，但​​优选相同。 含盐酸的介质和任何未反应的硫化合物可以通过电解室再循环。

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