Regeneration of 6-fluoro-4-chromanone from by-products in the synthesis of sorbinil
US4431828A · kind A · utility
6Cited by
2References
14Claims
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Key dates
| Filing date | Nov 10, 1982 |
| Grant date | Feb 14, 1984 |
| Priority date | — |
| Expiry date | Nov 10, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D311/68
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
6-Fluoro-4-chromanone, a sorbinil intermediate, is regenerated from enantiomeric and mixtures of enantiomeric and racemic compounds obtained as major by-products in the synthesis of sorbinil. The regenerated intermediate is useful in the synthesis of additional sorbinil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.