Process for production of hydroxybenzoic acids
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United States of America Patent
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Issued Date -
Aug 17, 2006
app pub date -
Mar 2, 2004
filing date -
Mar 4, 2003
priority date (Note) -
Abandoned
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Abstract
The present invention provides A method for producing a hydroxybenzoic acid compound comprising, preparing an alkali metal salt of a phenol compound from the phenol compound, and reacting the alkali metal salt of the phenol compound with carbon dioxide, wherein the step of preparing the alkali metal salt of the phenol compound from the phenol compound comprises the steps of: a) reacting an alkali metal alkoxide with an excess amount of the phenol compound, which is in excess of the alkali metal alkoxide, to give the alkali metal salt of the phenol compound, and b) distilling away the generated alcohol from the reaction simultaneously with carrying out step a). The method of the present invention makes it possible to produce hydroxybenzoic acid compound in high yield without using aprotic polar organic solvent.
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