Carbazole acetic acid derivatives
US4178289A · kind A · utility
1Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1979 |
| Grant date | Dec 11, 1979 |
| Priority date | — |
| Expiry date | Jan 11, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D209/86
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of 6-chloro-.alpha.-methylcarbazole-2-acetic acid from 6-chloro-.alpha.-hydroxy-.alpha.-methylcarbazole-2-acetic acid and/or 6-chloro-.alpha.-methylene-2-carboxylic acid, is described. The preparation of intermediates, such as, 6-chloro-.alpha.-hydroxy-.alpha.-methylcarbazole-2-acetic acid and lower alkyl carbazole-2-oxalate, inter alia, is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.