Isoindolenine derivatives, processes for their preparation and their use as intermediate products for the preparation of dyestuffs
US4492796A · kind A · utility
3Cited by
6References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1981 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Jun 1, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D209/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds which, in one of their tautomeric structures, correspond to the formula ##STR1## in which the ring A can carry 1, 2, 3 or 4 identical or different substituents, processes for their preparation and their use as intermediate products for the preparation of dyestuffs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.