Method for the sulfonation of compounds comprising free hydroxyl (OH) groups or primary or secondary amines
US7396923B2 · kind B2 · utility
0Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2004 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Feb 24, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B37/0021
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for sulfonating compounds having one or more free hydroxyl functional groups and/or one or more optionally substituted primary or secondary functional groups, including treating the compounds with a complex of SO3-DMF in the presence of an acid capture agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.