Process for the preparation of benzophenones
AssigneeRhone-Poulenc Specialites Chimiques
InventorMichel Desbois
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Abstract
A process for the preparation of benzophenones. A compound of the formula COX.sub.4 X.sub.5, where X.sub.4 and X.sub.5, which may be identical or different are halogen atoms, is reacted, in liquid hydrofluoric acid, with a deactivated benzene derivative, in the presence of boron trifluoride in such amount that the absolute pressure of boron trifluoride in the reaction space is at least one bar.
Claims15
A process for the preparation of benzophenones comprising the step of reacting a compound of the formula COX.sub.4 X.sub.5 (I), where X.sub.4 and X.sub.5 are identical or different and each is a halogen atom. with a deactivated benzene derivative in liquid hydrofluoric acid and in the presence of boron trifluoride (BF.sub.3) in an amount sufficient that the absolute pressure of (BF.sub.3) is at least 1 bar.
Dependencies are inferred from the claim text.