Method for manufacturing sulfolene compound and method for manufacturing sulfolane compound

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 ...

AI Technical Summary

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.