, Volume 11, Issue 10, pp 40–48 | Cite as

Mesoionic compounds

An Unconventional Class of Aromatic Heterocycles
  • Bharati V BadamiEmail author
General Articles


Mesoionic compounds are distinct types of heterocycles which belong to the class of nonbenzenoid aromatics. Sydnone, the representative mesoionic compound has been extensively studied because of its unusual structure, chemical properties and synthetic utility. Sydnone is used as a versatile synthon in heterocyclic synthesis. This article gives a brief account of the comparative studies of the structural features of mesoionic compounds and other heteroaromatic systems. Some synthetically useful tandem reactions of sydnones are also discussed.


Aromaticity mesoionic hetero-cycles sydnones tandem reactions 


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Suggested Reading

  1. [1]
    W Baker and W D Ollis,Quarter. Rev., Vol. 11, p. 15, 1957.CrossRefGoogle Scholar
  2. [2]
    F H C Stewart,Chem.Rev., Vol. 64, p. 129, 1957.CrossRefGoogle Scholar
  3. [3]
    L B Kier and E B Roche,J. Pharm.Sci., Vol. 56, p. 149, 1967.CrossRefGoogle Scholar
  4. [4]
    M Ohta and H Kato,Nonbenzenoid Aromatics, ed. J P Snyder, Academic Press, New York.Vol.117, 1969.Google Scholar
  5. [5]
    W D Ollis and C A Ramsden,Adv. Heterocyclic Chem, Vol. 19, p. 1, 1976.CrossRefGoogle Scholar
  6. [6]
    J Fugger, J M Tien and M Hunsberger,JAm.Chem.Soc., Vol.77, p.1483, 1055.Google Scholar
  7. [7]
    B V Badami and G S Puranik,Ind. Journal Chem., Vol. 12, p. 671, 1974.Google Scholar
  8. [8]
    B V Badami and G S Puranik,Rev.Roumaine de Chimie, Vol. 27, p. 281, 1982.Google Scholar
  9. [9]
    S G Mallur and B V Badami,Il Farmaco, Vol. 55, p. 65, 2000.CrossRefGoogle Scholar
  10. [10]
    J R Kavali and B V Badami,Il Farmaco, Vol. 55, p. 406, 2000.CrossRefGoogle Scholar
  11. [11]
    P S Shinge, P R Latthe and B V Badami,Synthetic Communications, Vol. 35, No. 16, p. 2169, 2005.CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 2006

Authors and Affiliations

  1. 1.DharwadIndia

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