Process for producing a 2-tertiary-alkyl substituted anthraquinone
US4036861A · kind A · utility
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10Claims
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Key dates
| Filing date | Jun 17, 1976 |
| Grant date | Jul 19, 1977 |
| Priority date | — |
| Expiry date | Jun 17, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C46/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing a 2-tertiary-alkyl substituted anthraquinone, characterized by carrying out catalytic oxidation of a diphenylmethane type compound having the formula ##STR1## wherein R.sub.1 and R.sub.2 are different from each other, and independently hydrogen or tertiary-alkyl having 4 and 5 carbon atoms with the proviso that one of R.sub.1 and R.sub.2 is hydrogen, and R.sub.3 is alkyl having 1-3 carbon atoms, in vapor phase in the presence of a catalyst comprising vanadium oxide is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.