Process for the synthesis of 3-chloro-4-hydroxyacetanilide
US4999457A · kind A · utility
4Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 8, 1990 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Feb 8, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C233/25
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel process for the preparation of 3-chloro-4-hydroxyacetanilide in high yields is disclosed which involves reacting N-acetyl-para-aminophenol (APAP) with sulfuryl chloride (SO.sub.2 Cl.sub.2) as the chlorine source and liquid SO.sub.2 as the reaction medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.