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    • 5. 发明授权
    • Process for producing sulfolane compounds
    • 环丁砜化合物的制备方法
    • US5347018A
    • 1994-09-13
    • US127615
    • 1993-09-28
    • Earl Clark, Jr.Howard F. EfnerJimmie J. Straw
    • Earl Clark, Jr.Howard F. EfnerJimmie J. Straw
    • C07D333/48C07D333/08
    • C07D333/48
    • A process for producing sulfolane compounds is provided which comprises: (1) contacting a conjugated diene with sulfur dioxide under conditions sufficient to synthesize a sulfolene compound whereby a mixture of the sulfolene compound and impurities comprising unreacted sulfur dioxide is produced; (2) transferring the mixture to an impurities removal vessel containing a freezing point depressant which comprises an aromatic compound; (3) removing the impurities; (4) transferring the impurities-reduced sulfolene compound to a hydrogenation reactor; (5) contacting the impurities-reduced sulfolene compound with hydrogen, in the presence of a hydrogenation catalyst, under conditions sufficient to produce a sulfolane compound; and (6) optionally recovering the sulfolane compound.
    • 提供了一种生产环丁砜化合物的方法,其包括:(1)在足以合成环丁烯化合物的条件下使共轭二烯与二氧化硫接触,由此产生包含未反应的二氧化硫的环丁烯化合物和杂质的混合物; (2)将混合物转移到含有含有芳族化合物的凝固点抑制剂的杂质去除容器中; (3)去除杂质; (4)将杂质减少的环丁烯化合物转移到氢化反应器中; (5)在氢化催化剂存在下,在足以产生环丁砜化合物的条件下使杂质减少的环丁烯化合物与氢接触; 和(6)任选地回收环丁砜化合物。
    • 6. 发明授权
    • Process for producing sulfolane compounds
    • 环丁砜化合物的制备方法
    • US5290953A
    • 1994-03-01
    • US46708
    • 1993-04-16
    • Earl Clark, Jr.Jimmie J. Straw
    • Earl Clark, Jr.Jimmie J. Straw
    • C07D333/48
    • C07D333/48
    • A process for producing sulfolane compounds is provided which comprises: (1) contacting a conjugated diene with sulfur dioxide under conditions sufficient to synthesize a sulfolene compound whereby a mixture of the sulfolene compound and impurities comprising unreacted sulfur dioxide is produced; (2) transferring the mixture, at a temperature in the range of about 55.degree. C. to about 85.degree. C., to an impurities removal reactor containing a solvent; (3) removing the impurities under an elevated pressure to produce an impurities-reduced sulfolene compound; (4) transferring the impurities-reduced sulfolene compound to a hydrogenation reactor; (5) contacting said impurities-reduced sulfolene compound with hydrogen, in the presence of a hydrogenation catalyst, under conditions sufficient to produce a sulfolane compound; and (6) optionally recovering said sulfolane compound.
    • 提供了一种生产环丁砜化合物的方法,其包括:(1)在足以合成环丁烯化合物的条件下使共轭二烯与二氧化硫接触,由此产生包含未反应的二氧化硫的环丁烯化合物和杂质的混合物; (2)将混合物在约55℃至约85℃的温度下转移至含有溶剂的杂质去除反应器; (3)在升高的压力下除去杂质以产生杂质降低的环丁烯砜化合物; (4)将杂质减少的环丁烯化合物转移到氢化反应器中; (5)在氢化催化剂存在下,在足以产生环丁砜化合物的条件下使所述杂质减少的环丁烯化合物与氢接触; 和(6)任选地回收所述环丁砜化合物。