Process for preparing benzopyran compounds
US5777128A · kind A · utility
0Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Nov 21, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D405/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for preparing compounds of structure (I), and the intermediate compound of formula (II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.