Method for manufacturing sulfolene compound and method for manufacturing sulfolane compound
一种制造方法、环丁烯砜的技术,应用在有机化学等方向,能够解决氢化催化剂活性阻断、配管闭塞、需要时间等问题
Active Publication Date: 2011-10-19
SUMITOMO SEIKA CHEM CO LTD
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- Abstract
- Description
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Problems solved by technology
However, in general, in the production of sulfolane compounds, there are disadvantages such as: in the reaction to obtain sulfolane compounds, the piping of the equipment is clogged due to the formation of polymers; or in the hydrogenation reaction of sulfolane compounds, due to the remaining The effect of sulfur dioxide, etc., the activity of the hydrogenation catalyst is blocked, so the reaction takes time, and a large amount of catalyst needs to be added, etc.
Method used
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Embodiment 1
Embodiment 2
Embodiment 3
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Abstract
Disclosed is a method for manufacturing a sulfolene compound with which the production of polymers can be suppressed. Further disclosed is a method for manufacturing a sulfolane compound with which inhibition of the activity of a hydrogenation catalyst can be suppressed, allowing a sulfolane compound to be hydrogenated smoothly. The method for manufacturing a sulfolene compound is represented by formula (2) that comprises a step wherein a conjugate diene compound represented by formula (1) and sulfur dioxide are made to react in the presence of a metallocene compound. In formula (1), R<1>-R<6> independently represent a hydrogen atom or an alkyl group with a carbon number of 1-6. In formula (2), R<1>-R<6> represent the same groups as R<1>-R<6> in formula (1).
Description
Technical field The present invention relates to a method for producing a sulfolene compound capable of suppressing polymer production. In addition, the present invention also relates to a method for producing a sulfolane compound that can smoothly hydrogenate a sulfolene compound while suppressing the blocking of the activity of the hydrogenation catalyst. Background technique Sulfolane compounds are used in extraction solvents such as benzene, toluene or xylene; acid gas removers; reaction solvents for aromatic compounds and solvents for the manufacture of electronic parts. As a manufacturing method of a sulfolane compound, the method of hydrogenating a sulfolene compound to obtain a sulfolene compound which can be obtained by reacting a conjugated diene compound and sulfur dioxide is mentioned. However, generally in the production of sulfolane compounds, there are disadvantages as follows: in the reaction to obtain the sulfolene compound, a polymer is formed and the piping ...
Claims
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Patent Type & Authority Applications(China)
IPC IPC(8): C07D333/48
CPCC07D333/48
Inventor 坂东诚二神田尚明小野田裕一宫田真良
Owner SUMITOMO SEIKA CHEM CO LTD
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