The reaction of diketene with ammonia, acetoacetamide formamide, and acetamide leads to the formation of 2,4-dihydroxy-3-acetyl-6-methylpyridine, which is also produced in the hydrolytic cleavage of the thioureide and 1′-phenylureide of 2,6-dimethylpyronecarboxylic acid.
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F. Chick and N. T. M. Wilsmoro, J. Chem. Soc.,97, 1978 (1910).
The Chemistry of Heterocyclic Compounds, Pyridine and Its Derivatives, Interscience Publishers,3, New York (1962), p. 686.
V. I. Gunar and S. I. Zav'yalov, Izv. AN SSSR, Ser. Khim., 747 (1965).
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Gunar, V.I., Ovechkina, L.F. & Zav'yalov, S.I. Interaction of diketene with ammonia and amides of carboxylic acids. Russ Chem Bull 14, 1850–1852 (1965). https://doi.org/10.1007/BF00850177
- Carboxylic Acid