Process for producing aromatic hydroxycarboxylic acids
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United States of America Patent
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Sep 18, 2007
Grant Date -
Jun 8, 2006
app pub date -
Nov 9, 2005
filing date -
Dec 3, 2004
priority date (Note) -
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Abstract
There is provided a process for producing an aromatic hydroxycarboxylic acid which is capable of suppressing the formation of by-products and enhancing the selectivity of the intended product and is free from any purifying step. The process is characterized in that it is obtained by reacting an alkali metal salt of an aromatic hydroxy compound and carbon dioxide in a non-proton polar solvent in the presence of a solid basic catalyst.
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