Process for the preparation of phenyl ketones
US4453012A · kind A · utility
6Cited by
15References
8Claims
0Family size
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Key dates
| Filing date | Jun 28, 1982 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Jun 28, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/43
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of phenyl ketones, characterized in that, in a first stage, a halo- or trihalomethylbenzene is reacted with a trihalomethylated aliphatic or aromatic compound in the presence of boron trifluoride in an amount such that the absolute pressure of boron trifluoride within the reaction vessel exceeds 1 bar, and in the presence of hydrofluoric acid as a solvent, and in that, in a second stage, the resultant product is hydrolyzed. The products are used as intermediates in the synthesis of compounds having a pharmaceutical or phytosanitary (e.g., herbicidal) activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.