Process for producing trimethylsulfoxonium bromide
AssigneeKureha Kagaku Kogyo Kabushiki Kaisha
InventorKazuhiko Sunagawa
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Abstract
In a process for producing trimethylsulfoxonium bromide by reacting dimethyl sulfoxide and methyl bromide, methyl bromide is added to a mixture of dimethyl sulfoxide and a stabilizing agent under atmospheric pressure intermittently or continuously so that the final molar ratio of methyl bromide to dimethyl sulfoxide becomes 0.40:1 to 0.70:1, with the temperature of dimethyl sulfoxide being maintained at a temperature of 50.degree. to 75.degree. C. This process can realize a reduction of reaction time, an improvement of yield and establishment of safety of producing operations.
Claims9
A process for producing trimethylsulfoxonium bromide which comprises reacting dimethyl sulfoxide with methyl bromide by adding methyl bromide to a mixture of dimethyl sulfoxide and a stabilizing agent under atmospheric pressure intermittently or continuously so that the final molar ratio of methyl bromide to dimethyl sulfoxide will become 0.40:1 to 0.70:1, with the temperature of dimethyl sulfoxide being maintained at a temperature of 50.degree. to 75.degree. C., to react dimethyl sulfoxide and methyl bromide.
Dependencies are inferred from the claim text.