Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfur containing
Patent
1982-06-28
1985-11-12
Daus, Donald G.
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfur containing
260465F, 260465G, 562429, 568 30, 568 31, 568 33, C07C14934
Patent
active
045529841
ABSTRACT:
A process for the preparation of .alpha.,.alpha.-difluoroalkoxy or .alpha.,.alpha.-difluoroalkylthiophenyl sulfones, in which a polyhaloalkoxybenzene or a polyhaloalkylthiobenzene is reacted with a sulfonic acid, a derivative or a precursor of this acid, in the presence of boron trifluoride in an amount such that the absolute pressure of the 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.
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Ceperley Mary E.
Daus Donald G.
Ginsburg Paul H.
Haley, Jr. James F.
Rhone-Poulenc Specialites Chimiques
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