GB813898A - A process for the production of dialkyl sulphoxides - Google Patents
A process for the production of dialkyl sulphoxidesInfo
- Publication number
- GB813898A GB813898A GB34741/57A GB3474157A GB813898A GB 813898 A GB813898 A GB 813898A GB 34741/57 A GB34741/57 A GB 34741/57A GB 3474157 A GB3474157 A GB 3474157A GB 813898 A GB813898 A GB 813898A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphoxide
- oxygen
- dialkyl
- excess
- sulphide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C317/00—Sulfones; Sulfoxides
Abstract
Dialkyl sulphoxides are prepared by oxidizing dialkyl sulphides with a solution of nitrogen dioxide. The solvent is preferably the sulphoxide obtained as reaction product, but other solvents, e.g. chlorinated hydrocarbons, may be used. Excess dialkyl sulphide is preferably used. The nitric oxide formed may be converted in a second vessel into nitrogen dioxide with oxygen or a gas containing oxygen and the dioxide separated from the waste gases by washing, preferably with the sulphoxide product, and recycled to the reactor. The oxidation of nitric oxide is preferably effected in a vessel larger in volume than the reactor. Any excess sulphide is separated from the sulphoxide, e.g. by heating and, if desired, by expelling with a gas stream. Excess oxygen is preferably used for oxidizing the nitric oxide so that the waste gases contain free oxygen, preferably not less than 7 per cent by volume. Nitric acid may be used as the source of nitrogen oxides. An apparatus is described for the continuous production of sulphoxides. Examples describe the oxidation of dimethyl sulphide to dimethyl sulphoxide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE813898X | 1956-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB813898A true GB813898A (en) | 1959-05-27 |
Family
ID=6734420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34741/57A Expired GB813898A (en) | 1956-11-15 | 1957-11-07 | A process for the production of dialkyl sulphoxides |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB813898A (en) |
-
1957
- 1957-11-07 GB GB34741/57A patent/GB813898A/en not_active Expired
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