Process for preparing diarylketones

Details Process for preparing diarylketones Process for preparing diarylketones

1975-05-27

1977-05-10

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260590D, 260568, 260517, 260511, C07C 4976

Patent

active

040228380

ABSTRACT:
A process for converting a 1,1-diarylalkane, such as a 1,1-bis(alkylphenyl)alkane, to the corresponding diarylketone which involves oxidizing the 1,1-diarylalkane using critical amounts of 1,1-diarylalkane, nitric acid and water. In a preferred embodiment the reaction product obtained as a result of the oxidation of a 1,1-bis(alkylphenyl)alkane is then further subjected to reaction with additional nitric acid at elevated temperatures in a second stage to convert each of the nuclear alkyl groups on the alkyl-aromatic charge to carboxyl groups and the dilute nitric acid remaining is employed in the first stage as oxidant.

REFERENCES:
patent: 3479400 (1969-11-01), Lese et al.
patent: 3641132 (1972-02-01), Schulz et al.
Bengtsson, Acta Chem Scan, vol. 9(1), pp. 177-178 (1955).
Ogato et al, Tetrahedron, vol. 25, pp. 4919-4922 (1969).
Ogato et al, J. Org. Chem, vol. 34(4), pp. 845-847 (1969).
Akaboyashi, Yuki Gasil Kogaku Kygkai-shi vol. 27, pp. 233-242 (1969).

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