Benzoxazepinone process
US4977258A · kind A · utility
3Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1989 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Sep 29, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of formula III: ##STR1## wherein R.sup.1 is a 5- or 6-membered aromatic heterocyclic group; and R.sup.4 and R.sup.5 each idependently signify hydrogen, halogen, trifluoromethyl, cyano, nitro, amino or lower alkyl; are useful intermediates in a novel process for the preparation of a class of pharmacologically active compounds of formula I: ##STR2## wherein R.sup.1, R.sup.4 and R.sup.5 are as defined above; and R.sup.3 represents hydrogen or lower alkyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.