Process for preparing .alpha.-haloacetophenone derivative
US5821388A · kind A · utility
0Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1997 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Mar 27, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C315/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides processes for preparing .alpha.-halo(methylthio)acetophenone and .alpha.-halo (methylsulfonyl)acetophenone in an industrially simple and economically advantageous manner. In the invention, methylthioacetophenone is halogenated with a halogenating agent in the presence of an alcohol, giving .alpha.-halo(methylthio) acetophenone. Then the compound is oxidized with an oxidizing agent, giving .alpha.-halo(methylsulfonyl)acetophenone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.