Chemical process

Details Chemical process Chemical process

1984-06-04

1986-08-05

Reamer, James H.

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

Organic compounds

Oxygen containing

568322, 560 66, C07C 4546

Patent

active

046044850

ABSTRACT:
Preparation of para-substituted 4-hydroxybenzophenones by forming poly(4-oxybenzoyl) in situ and reacting it with an appropriately substituted aromatic compound. The poly(4-oxybenzoyl) can be formed from a precursor such as 4-hydroxybenzoic acid by reaction with an agent which removes water from the acid to form the polymer. The reaction with the appropriately substituted aromatic compound, for example fluorobenzone, is effected in the presence of a Lewis acid compound such as aluminum chloride.

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patent: 4454350 (1984-06-01), Desbois
Stille, Condensation Monomers (1972) John Wiley & Sons, pp. 620-623.
Hill, Jo. Am. Chem. Soc., vol. 54, pp. 4105-4106 (1932).

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