Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1982-06-28
1984-05-01
Torrence, Dolph H.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260465D, 260465E, 260465G, 562432, 562436, 562459, 562460, 564329, 568 43, 568306, 568314, 568315, 568319, 568322, C07C12175, C07C 4545, C07C14930
Patent
active
044460783
ABSTRACT:
A process for the preparation of .alpha.,.alpha.-difluoroalkoxy or .alpha.,.alpha.-difluoroalkylthiophenyl ketones, in which a polyhaloalkoxybenzene or a polyhaloalkylthiobenzene is reacted with a carboxylic acid, a precursor or a derivative of this acid in the presence of boron trifluoride in such an amount 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 phytosanitary (e.g., herbicidal) or pharmaceutical activity.
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Rhone-Poulenc Specialites Chimiques
Torrence Dolph H.
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