Preparation of benzophenons

C - Chemistry – Metallurgy – 07 – C

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260/578.1

C07C 49/76 (2006.01) C07C 45/45 (2006.01) C07C 45/47 (2006.01) C07C 49/813 (2006.01) C07C 49/83 (2006.01) C07C 49/84 (2006.01)

Patent

CA 1221382

PRECIS DE LA DIVULGATION: La présente invention concerne un procédé pour la préparation de benzophénones. Selon ce procédé, on fait réagir dans l'acide fluorhydrique liquide un composé de formule COX1X2 où X1 et X2, identiques ou différents, repré- sentent un atome d'halogène avec un dérivé benzénique désactivé, en présence de trifluorure de bore en quantité telle que la pression absolue de trifluorure de bore dans l'enceinte réactionnelle soit d'au moins un bar.

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