Process of preparing alkali metal salys of hydrophobic sulfonamides
US5783705A · kind A · utility
30Cited by
2References
11Claims
0Family size
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Key dates
| Filing date | Apr 28, 1997 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Apr 28, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D417/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process of preparing an alkali metal salt of a hydrophobic sulfonamide is provided. The process includes the step of dissolving a free sulfonamide in an organic solvent in the presence of a saturated alkali metal salt solution and recovering the formed sulfonamide salt from the organic phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.