Purification of 4-fluoro-4'-hydroxybenzophenone

Details Purification of 4-fluoro-4'-hydroxybenzophenone Purification of 4-fluoro-4'-hydroxybenzophenone

1985-05-13

1986-09-16

Reamer, James H.

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

Organic compounds

Oxygen containing

C07C 4581

Patent

active

046123997

ABSTRACT:
A mixture of isomers of fluoro-4'-hydroxybenzophenone are dissolved in an aqueous solution of a base, for example sodium hydroxide, and sufficient acid is added to reduce the pH to not less than 9 and to precipitate 4-fluoro-4'-hydroxybenzophenone having a reduced proportion of other isomers.

REFERENCES:
patent: 3403183 (1968-09-01), Dobraty et al.
patent: 3830845 (1974-08-01), Arimoto et al.
Attwood et al., (Poly. Preprints, American Chemical Society, Div. Polym. Chem, vol. 20, (1979) pp. 191-194).

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