Process for producing 1,4-dihydroanthraquinone
US4176125A · kind A · utility
4Cited by
4References
3Claims
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Assignee
Inventors
Key dates
| Filing date | Nov 17, 1977 |
| Grant date | Nov 27, 1979 |
| Priority date | — |
| Expiry date | Nov 17, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C46/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
1,4-Dihydroanthraquinones are produced by oxidizing 1,4,4a,9a-tetrahydroanthraquinone or 1,4-dihydroanthrahydroquinone or an inert substituted derivative thereof with molecular oxygen in an aqueous medium at the reaction temperature of lower than 70.degree. C. under the condition of pH of 8.5 to 12.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.