Process for the preparation of aromatic acid
US4990657A · kind A · utility
1Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | May 19, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/824
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the preparation of an aromatic acid comprising the step of combining an aromatic halide having at least one iodine or bromine substituent with: PA1 a. a water-immiscible organic solvent, PA1 b. a palladium-based catalyst, PA1 c. a palladium-complexing agent, PA1 d. a tertiary nitrogen-containing organic base, PA1 e. water and PA1 f. carbon monoxide. The process is performed in a two-phase liquid medium and in the substantial absence of a phase transfer agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.