Process for the production of 2-substituted chromones
US4179447A · kind A · utility
3Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1978 |
| Grant date | Dec 18, 1979 |
| Priority date | — |
| Expiry date | Nov 30, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D311/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention is concerned with a novel process for the production of 2-substituted chromones (I) from readily available 4-methoxycoumarins. ##STR1## These compounds are useful as antiallergy agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.