Production of aromatic sulfones
    75.
    发明授权
    Production of aromatic sulfones 失效
    生产芳香磺酸盐

    公开(公告)号:US3673259A

    公开(公告)日:1972-06-27

    申请号:US3673259D

    申请日:1968-10-07

    CPC分类号: C07C317/00

    摘要: In the production of aromatic sulfones by the condensation reaction of an arylsulfonyl chloride with an arene, practically quantitative yields of the aromatic sulfone are obtained without the usual purification and work-up problems by conducting the condensation reaction in the presence of relatively large amounts (based on the molar concentration of the arylsulfonyl chloride) of the particular arylsulfonic acid which corresponds to such arylsulfonyl chloride, but substantially in the absence of any metal salts. Using in conjunction with this improved method for producing the aromatic sulfone a new and unique technique for producing the arylsulfonyl chloride, which technique is based on chlorinating the aromatic sulfonic acid with chlorosulfonic acid in the presence of certain organic solvents so that equilibrium of such chlorination is displaced toward formation of the resultant arylsulfonyl chloride, an extremely efficient process has been developed for the production of aromatic sulfones. This process is described in detail in connection with the production of bis-(p-chlorophenyl) sulfone, which is a commercially important monomer in the manufacture of many thermoplastic polysulfone polymers.

    摘要翻译: 在通过芳基磺酰氯与芳烃的缩合反应制备芳族砜时,通过在相对较大量的存在下进行缩合反应,可以获得芳族砜的实际定量产率而无需通常的纯化和后处理问题(基于 关于芳基磺酰氯的摩尔浓度)对应于这种芳基磺酰氯,但基本上不存在任何金属盐的特定芳基磺酸。 结合这种用于生产芳族砜的改进方法,用于生产芳基磺酰氯的新的和独特的技术,该技术基于在某些有机溶剂存在下用氯磺酸氯化芳族磺酸,使得这种氯化的平衡是 为了形成所得的芳基磺酰氯,已经开发了用于生产芳族砜的非常有效的方法。