Process for making fluorenones
US5545760A · kind A · utility
4Cited by
4References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1995 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Feb 7, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C49/675
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the oxidation of a fluorene compound to a corresponding fluorenone compound comprises treating the fluorene compound with an oxidizing gas in the presence of a solid alkali metal or alkaline earth metal oxide or hydroxide or a concentrated aqueous solution thereof in a reaction mixture in a non-aqueous heterocylic nitrogenous solvent, wherein the reaction mixture is free of a phase transfer agent, for a time sufficient and at a temperature sufficient to convert the fluorene compound to the fluorenone compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.