Method for preparing tetrahydrothiophen
    31.
    发明授权
    Method for preparing tetrahydrothiophen 失效
    四氢噻吩的制备方法

    公开(公告)号:US3933856A

    公开(公告)日:1976-01-20

    申请号:US413950

    申请日:1973-11-08

    IPC分类号: C07D333/08 C07D333/10

    CPC分类号: C07D333/08

    摘要: This invention relates to a method for preparing tetrahydrothiophen, consisting in that tetrahydrofuran is reacted with a sulphidation agent, elementary sulphur or phosphorus sulphides, with the stoichiometric ratio of the above-named substances, and at a temperature of 175.degree.-215.degree.C, with subsequent isolation of the end product. The interaction between tetrahydrofuran and elementary sulphur can be realized in the presence of a red phosphorus additive which increases the yield of the end product. In the described method a non-toxic and safe (with respect to explosion) sulphidation reagents is used which markedly improves the labour conditions. The method is simple, requires no complicated process equipment, and can be effected under milder conditions as compared with the known methods.

    摘要翻译: 本发明涉及一种四氢噻吩的制备方法,其特征在于四氢呋喃与上述物质的化学计量比的硫化剂,元素硫或硫化磷反应,在175〜-215℃的温度下, 随后分离最终产品。 四氢呋喃和元素硫之间的相互作用可以在红磷添加剂的存在下实现,这增加了最终产物的产率。 在所述方法中,使用无毒且安全(相对于爆炸)的硫化试剂,其显着地改善了劳动条件。 该方法简单,不需要复杂的加工设备,与已知方法相比可以在较温和的条件下进行。