Dinicotinic_acid

Dinicotinic acid

Dinicotinic acid

Chemical compound

Dinicotinic acid (pyridine-3,5-dicarboxylic acid) is a heterocyclic organic compound, more precisely a heteroaromatic. It is one of many pyridinedicarboxylic acids and consists of a pyridine ring carrying to carboxy groups in the 3- and 5-positions.

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Preparation and properties

Dinicotinic acid can be formed by heating pyridine-2,3,5,6-tetracarboxylic acid or carbodinicotinic acid (pyridine-2,3,5-tricarboxylic acid).[2][3]

The acid is sparingly soluble in water and ether. Its melting point of 323 °C is the highest among pyridinedicarboxylic acids. Upon heating, it decarboxylates and decomposes to nicotinic acid:[4]

References

  1. [1]
    Structure reports for 1973 : organic section. Organic compounds. J. Trotter. Dordrecht: Springer. 1975. p. 174. ISBN 978-94-017-3121-8. OCLC 859588799.{{cite book}}: CS1 maint: others (link)
  2. [2]
    Meyer, Hans; Tropsch, Hans (1914). "Über Dinicotinsäure und deren Abbau zu ββ′-Diaminopyridin und über das αα′-Diaminopyridin". Monatshefte für Chemie (in German). 35 (2): 207–217. doi:10.1007/BF01518124. ISSN 0026-9247.
  3. [3]
    Wolffenstein, Richard (1922). Die Pflanzenalkaloide (in German) (Dritte, verbesserte und vermehrte Auflage ed.). Berlin, Heidelberg. p. 67. ISBN 978-3-642-92449-1. OCLC 913710178.{{cite book}}: CS1 maint: location missing publisher (link)
  4. [4]
    Alam, Mahbub; Khan, M. Hafeez (1980). "Preparation of some nicotinic acid derivatives". Philippine Journal of Science. 109 (1–2): 19–21.

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