Nitration of phenolic compounds
US4723043A · kind A · utility
3Cited by
1References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Jul 7, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C201/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Substituted phenols are nitrated by contacting same with a 10 to 70% by weight concentrated aqueous solution of nitric acid. The subject nitration process is well adopted for the preparation, e.g., of 2,6-dichloro-4-nitrophenol, a valuable intermediate in the production of various agrochemicals/pharmaceuticals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.