Process for the preparation of 8-hydroxyquinoline
US4044011A · kind A · utility
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14Claims
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Assignee
Inventor
Key dates
| Filing date | Oct 9, 1975 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | Oct 9, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D215/26
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Substantially increased yields of pure-grade 8-hydroxyquinoline are obtained by gradual addition of a solution of o-nitrophenol in acrolein or in an allylidene acetal or diester, to an aqueous acid solution of o-aminophenol. 8-hydroxyquinoline is an article of commerce having known uses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.