Preparation of 4,4'-dibromobiphenyl
US5015792A · kind A · utility
1Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 24, 1989 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Apr 24, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
4,4'-Dibromobiphenyl is selectively produced in high yields by actively brominating biphenyl in a reaction medium containing at least one strong acid having a pKa of at most 4, e.g., a carboxylic or sulfonic acid, and, optionally, a reaction solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.