Process for the production of 2-acetylbenzo [.beta.]thiophenes
US5169961A · kind A · utility
8Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1991 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Nov 22, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/56
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production in high yield of 2-acetylbenzo[.beta.]thiophene and its alkyl and alkoxy substituted derivatives by converting a 2-halobenzaldehyde to a 2,2'-dithiobis(benzaldehyde) intermediate and reacting that intermediate successively with 2,4-pentanedione and chloroacetone in the presence of base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.