Process for the hydroxylation of aromatic hydrocarbons
US6071848A · kind A · utility
1Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1998 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Feb 11, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process for the hydroxylation of aromatic hydrocarbons by direct oxidation with hydrogen peroxide. The process is carried out in the presence of a catalyst comprising: PA1 iron, administered as an inorganic salt; PA1 a carboxylic acid of an aromatic compound containing nitrogen, in particular a pyrazin-2-carboxylic acid or derivative; PA1 acidifying agent, especially trifluoracetic acid, and a solvent system comprising an organic phase consisting of a substrate and acetonitrile and an aqueous phase containing the catalyst and hydrogen peroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.