Preparation of symmetrical and asymmetrical disulphides by reactive distillation of mixtures of disulphides
US9562006B2 · kind B2 · utility
5Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 27, 2013 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | Aug 27, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of symmetrical or asymmetrical dialkyl disulphides by involving at least one mixture of symmetrical and/or asymmetrical dialkyl disulphides in a basic and/or photochemical catalytic reaction, with joint extraction, preferably continuously, of the symmetrical and/or asymmetrical disulphide(s) which it is desired to obtain.The process of the invention is particularly suited to the preparation of dimethyl disulphide or diethyl disulphide from a mixture of symmetrical and/or asymmetrical dialkyl disulphides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.