Process for producing trimethylsulfoxonium bromide

摘要

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 is 0.40:1 to 0.70:1, with the temperature of the dimethyl sulfoxide being maintained at 50 to 75 DEG C.