Preparation of 2-halofluorobenzene
US4918251A · kind A · utility
1Cited by
2References
16Claims
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Inventor
Key dates
| Filing date | Apr 4, 1989 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Apr 4, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/23
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing 2-halofluorobenzene from 2,4-dihalofluorobenzenes comprises treating an aqueous slurry of 2,4-dihalofluorobenzene with hydrogen at an elevated temperature in the presence of a transition metal supported on a carbon catalyst. The process produces a mixture including fluorobenzene and 2-halofluorobenzene. The 2-halofluorobenzene can be separated from the mixture by conventional means such as distillation. Optionally, the fluorobenzene also can be recovered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.