Process for preparing arylsulfonyl halides
    25.
    发明授权
    Process for preparing arylsulfonyl halides 失效
    制备芳基磺酰卤的方法

    公开(公告)号:US5453482A

    公开(公告)日:1995-09-26

    申请号:US210785

    申请日:1994-03-18

    摘要: Provided is a new process useful for preparing arylsulfonyl halides, which comprises the addition or drowning of halosulfonation reaction products, produced by the reaction of aromatic compounds (arenes), with excess halosulfonic acid, into C.sub.3 -C.sub.6 aliphatic ketones, preferably acetone, isopropyl alcohol, or mixtures thereof, instead of drowning into water as is known in the art of aromatic sulfonyl chloride preparation. Less heat of reaction is observed, thus making the drowning of the halosulfonation reaction mixture safer and more controllable. Further, less hydrogen chloride gas is evolved from the drowning mixture and generally more highly pure arylsulfonyl chlorides are produced.

    摘要翻译: 提供了一种用于制备芳基磺酰卤的新方法,其包括将芳族化合物(芳烃)与过量的卤代磺酸反应生成的卤代磺化反应产物加入或淹没在C 3 -C 6脂族酮中,优选丙酮,异丙醇 ,或其混合物,而不是如本领域已知的芳族磺酰氯制剂淹没在水中。 观察到较少的反应热,从而使得卤化磺化反应混合物的淹没更加安全并且更可控。 此外,从淹没混合物中放出较少的氯化氢气体,通常产生更高纯度的芳基磺酰氯。