Process for production of aromatic hydroxycarboxylic acid

Process for production of aromatic hydroxycarboxylic acid

The present invention provides a method of production of aromatic hydroxycarboxylic acids by the reaction of alkaline metal salts of phenols or naphthols with carbon dioxide, in which free phenols or free naphthols produced as by-products in the reaction system are removed from the system so as to c...

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Hauptverfasser: KAWATA, KEIJI, MASADA, YOSHIYASU, UENO, RYUZO, KUWAE, YOSHIHIKO
Format: Patent
Sprache:eng ; fre ; ger
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator KAWATA, KEIJI
MASADA, YOSHIYASU
UENO, RYUZO
KUWAE, YOSHIHIKO
description The present invention provides a method of production of aromatic hydroxycarboxylic acids by the reaction of alkaline metal salts of phenols or naphthols with carbon dioxide, in which free phenols or free naphthols produced as by-products in the reaction system are removed from the system so as to control the content of free phenols or free naphthols at a suitable level, by which a purer objective compound can be obtained at high yield under the condition of lower temperature and shorter time.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title Process for production of aromatic hydroxycarboxylic acid
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