Process for producing 3,4′ dihydroxybenzophenone

A process for synthesizing 3,4′dihydroxybenzophenone by reacting meta-hydroxybenzoic acid and phenol in the presence of a Lewis acid, and a protonic acid. Upon completion of the reaction the Lewis and protonic acids are removed and then the reaction product of 3,4′dihydroxybenzophenone is contacted...

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Bibliographic Details
Main Authors VINCENT MICHAEL FRANCIS, LEE KIU-SEUNG
Format Patent
LanguageEnglish
Published 10.08.2010
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:A process for synthesizing 3,4′dihydroxybenzophenone by reacting meta-hydroxybenzoic acid and phenol in the presence of a Lewis acid, and a protonic acid. Upon completion of the reaction the Lewis and protonic acids are removed and then the reaction product of 3,4′dihydroxybenzophenone is contacted with water (at temperature not greater than 10° C.) and ammonium hydroxide followed by filtration.
Bibliography:Application Number: US20090393310