Process for producing trimethylsulfoxonium bromide

Details Process for producing trimethylsulfoxonium bromide Process for producing trimethylsulfoxonium bromide

1996-12-24

1998-01-06

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfur containing

C07C31504

Patent

active

057057010

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.

REFERENCES:
patent: 4141920 (1979-02-01), Dryden
patent: 4625065 (1986-11-01), Heather
CA69:18780, 1968 Abst of "2 Analog & halomethylketones from acyloxsulfonium", author M. Cory.
CA94: 7183 1978 "Abst of Detrom & control of explosion of hazards involved in prep of formethylsufoxonium bromide" author Scaro.
CA 80:73882 1973 Abst of "Chem hazards in preparation of trimethylsulfoxonium bromide" Scaro.
CA 80:69812 (1973) "Abst-Laboratory Explosion".

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