FIELD: organic chemistry. SUBSTANCE: method of synthesis of derivatives of quinoline carboxylic acids of the formula (I) involves interaction of compound of the formula (II) with compound of the formula (III) and formed compound of the formula (IV) is hydrolyzed isolating the compound of the formula (I) as a free form or as a salt. Structures of the formulas (I), (II), (III) and (IV) with corresponding radicals were given in invention description. Method is used for synthesis of medicinal preparations. EFFECT: improved method of synthesis. 9 cl
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