Process for the preparation of chromene derivatives
US4968819A · kind A · utility
1Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1989 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Sep 7, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D311/70
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of Chromenes of the general Formula V ##STR1## prepared from chromanone derivatives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.