The behavior of 2-chloro-4-hydroxy- and 4-chloro-2-oxoquinoline-3-carboxylic acids under acid catalyzed esterification conditions with methanol has been studied. A method is proposed for obtaining 2-chloro-4-hydroxyquinoline-3-carboxylic acid ethyl ester.

This study proposes a method for obtaining 2-chloro-4-hydroxyquinoline-3-carboxylic acid ethyl ester by acid catalyzed esterification with methanol, enabling the synthesis of 4-chloro-2-oxoquinoline-3-carboxy

Paper

4-Hydroxyquinol-2-ones. 85. Synthesis of 2-Chloro-4-hydroxyquinoline-3-carboxylic Acid Ethyl Ester

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