Process for the preparation of benzophenones

Details Process for the preparation of benzophenones Process for the preparation of benzophenones

1984-12-18

1986-10-21

Reamer, James H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568323, 568 42, 568 43, C07C 4547

Patent

active

046187260

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.

REFERENCES:
patent: 2580300 (1951-12-01), Johnson et al.
patent: 3956240 (1976-05-01), Dahl et al.
patent: 4453012 (1984-06-01), Desbois
patent: 4454350 (1984-06-01), Desbois
Olah "Friedel-Crafts & Related Reactions," Interscience Publn., vol. 1, p. 120, vol. III, pp. 1257-1258 (1963).
Hansch et al., Journal of Medicinal Chemistry, 16, No. 11, 1207-1212 and 1216, (1973).
Sheppard, Journal of Organic Chemistry, 29, No. 1, 1-11 (1964).

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