Process for the preparation of trifluoromethyl iodide
US4794200A · kind A · utility
15Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1987 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Oct 9, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/204
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of trifluoromethyl iodide by bringing into contact with one another to form a reaction product either: PA0 zinc, sulfur dioxide, and trifluoromethyl bromide, or PA0 (b) sodium dithionite and trifluoromethyl bromide; in a polar aprotic solvent, such as dimethylformamide, preferably followed by a filtration stage to remove the solid products. Thereafter, iodine dissolved in carboxylic or sulfuric acid is added to the reaction product, and trifluoromethyl iodide is evolved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.