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    • 10. 发明公开
    • Preparation of alkanesulfonyl halides and alkanesulfonic acids
    • Herstellung von Alkansulfonylhaliden undAlkansulfonsäuren。
    • EP0331864A1
    • 1989-09-13
    • EP89100154.7
    • 1989-01-05
    • ATOCHEM NORTH AMERICA, INC. (a Pennsylvania corp.)
    • Gardner, David MiltonWheaton, Gregory Alan
    • C25B3/02
    • C25B3/02
    • 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.
    • 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。