Process for sulfonylation of halobenzenes
US4554381A · kind A · utility
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16References
7Claims
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Key dates
| Filing date | Jun 28, 1982 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Jun 28, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C315/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for sulfonylation of halobenzenes, in which a halobenzene is reacted with a sulfonic acid, a precursor or a derivative thereof 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. The resultant products are useful as intermediates in the synthesis of compounds having a phytosanitary (e.g., herbicidal) or pharmaceutical activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.