Abstract

Isomeric conversion of 3,5-dichloro-3-cyano-4-methylpyridine-2,6(1H)-dione to 5,5-dichloro-3-cyano-4-methylpyridine-2,6(1H)-dione in polar solvents was shown. A new method for the synthesis of 5-chloro-3-cyano-6-hydroxy-4-methylpyridin-2-one was proposed. Authors: L. V. Dyadyuchenko, V. D. Strelkov, and V. N. Zaplishnyi. English Translation in Chemistry of Heterocyclic Compounds , 1999, 35 (12), pp 1437-1440 http://link.springer.com/article/10.1007/BF02251818

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