申请人:SANKO CHEMICAL COMPANY LTD.
公开号:EP0448748A1
公开(公告)日:1991-10-02
Herein disclosed are a method for preparing an aromatic sulfone comprising the step of condensing, by heating, an aromatic compound with sulfuric acid or an aromatic sulfonic acid in the presence of a heteropoly-acid and orthophosphoric acid; and a method for preparing an aromatic sulfone comprising the steps of: condensing, by heating, an aromatic compound with sulfuric acid or an aromatic sulfonic acid in the presence of a heteropoly-acid and orthophosphoric acid; adding water and optionally an aromatic compound to the resulting reaction mixture to separate it into (i) a mixture of the aromatic sulfone and unreacted aromatic compound and (ii) an aqueous solution containing the heteropoly-acid, orthophosphoric acid and aromatic sulfonic acid, to thus recover the same. The aqueous solution containing the heteropoly-acid, orthophosphoric acid and aromatic sulfonic acid can be recyled or reused in the subsequent condensation reaction.
本文揭示了制备芳香基磺酮的方法,包括在杂多酸和正磷酸的存在下,通过加热芳香化合物与硫酸或芳香基磺酸进行缩合的步骤;以及制备芳香基磺酮的方法,包括以下步骤:在杂多酸和正磷酸的存在下,通过加热芳香化合物与硫酸或芳香基磺酸进行缩合;向反应混合物中加入水和可选的芳香化合物,将其分离成(i)芳香基磺酮和未反应的芳香化合物的混合物和(ii)含有杂多酸、正磷酸和芳香基磺酸的水溶液,从而回收它们。含有杂多酸、正磷酸和芳香基磺酸的水溶液可以在随后的缩合反应中循环使用或再利用。