Preparation of thiophene compounds
US4307239A · kind A · utility
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Key dates
| Filing date | Sep 2, 1980 |
| Grant date | Dec 22, 1981 |
| Priority date | — |
| Expiry date | Sep 2, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for the preparation of thiophenes having the formula ##STR1## by contacting a compound having the formula ##STR2## with certain amine bases. Other amine bases can be employed when a two-phase reaction system is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.