Preparation of substituted benzophenones

Details Preparation of substituted benzophenones Preparation of substituted benzophenones

1986-12-22

1990-05-29

Reamer, James H.

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

Organic compounds

Oxygen containing

C07C 4548

Patent

active

049297619

ABSTRACT:
There is disclosed a process for the preparation of a benzophenone, which process comprises contacting a feed comprising an aromatic carboxylic acid in the vapor phase and under suitable conditions with a catalyst which is capable of catalyzing the conversion of an aromatic carboxylic acid to a benzophenone to provide a yield of at least 10% benzophenone and which comprises at least one oxide that is an oxide of an element having an atomic number of at least 60. Typical catalysts are neodymium trioxide and a mixture of thorium dioxide and magnesium oxide.

REFERENCES:
patent: 2811559 (1957-10-01), Chesrown et al.
Imanaka et al., Chem. Abst., vol. 81, #37016h, (1974).
Sosnina et al. (I), Chem. Abst., vol. 71, #140,407k, (1971).
Sosnina et al. (II), Chem. Abst., vol. 71, #41654n, (1971).

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