Ring halogenation of aromatic compounds
US6124512A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1998 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Sep 18, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/307
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a method of halogenating the ring of an aromatic compound. The aromatic compound is contacted with a halogenating agent in the presence of a heterogeneous catalyst. The catalyst is the calcination reaction product of: PA1 (A) 51 to 99 wt % of a support which comprises at least one inorganic oxide or hydroxide of at least one metal that is at least divalent and forms a metal-to-oxygen matrix during calcination; and PA1 (B) 1 to 49 wt % of at least one dopant which comprises a compound that places an element that is at least divalent, bonded to oxygen atoms, into said matrix during said calcination, resulting in the formation of an acidic solid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.