Process for the preparation of anthraquinone and its substituted derivatives
US4379092A · kind A · utility
9Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1981 |
| Grant date | Apr 5, 1983 |
| Priority date | — |
| Expiry date | Nov 24, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C46/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of anthraquinone compounds by condensation of phthalic anhydride with a benzene derivative wherein a mixture of hydrofluoric acid and boron trifluoride is utilized as catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.