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Heterocyclic compounds

Part III. The synthesis of cyclopenteno- (1′: 2′: 2: 3)-chromones, and a discussion on the mechanism of the pechmann and the simonis reactions
  • S. Zafaruddin Ahmad
  • R. D. Desai
Article
  • 33 Downloads

Summary of Part III

Chromones have been prepared by condensing cyclopentanone-2-carboxylate with phenol,m-cresolp-cresol and β-naphthol in the presence of phosphorus pentoxide. The mechanism of the Pechmann and Simonis Reactions has been discussed.

Keywords

Coumarin Phosphorus Pentoxide Chromone Colourless Needle Sodium Ethoxide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Pechmann and co-workers,Ber., 1883,16, 2119; 1884,17, 2187; 1899,32, 3681; 1901,34, 354.Google Scholar
  2. 2.
    Simonis and co-workers,ibid.,, 1913,46, 2015; 1914,47, 697.Google Scholar
  3. 3.
    Jacobson and Ghosh,J. Chem. Soc., 1915,107, 425, 959, 1051; Ghosh,ibid., J. Chem. Soc., 1916,109, 105.Google Scholar
  4. 4.
    Baker,ibid.,, 1925,127, 4394; Baker and Robinson,ibid. J. Chem. Soc., 1926,129, 1981.Google Scholar
  5. 5.
    Dey and Lakshminarayanan,J. Ind. Chem. Soc., 1932,9, 153.Google Scholar
  6. 6.
    Robertsonet al., J. Chem. Soc., 1931, 1255, 1877, 2426; 1932, 1180, 1681; 1936, 426.Google Scholar
  7. 7.
    Chakravarti and co-workers,J. Ind. Chem. Soc., 1932,9, 25, 31 389; 1935,12, 536, 622, 791; 1936,13, 619, 649.Google Scholar
  8. 8.
    Z. Ahmad and Desai,Proc. Ind. Acad. Sci., 1937,5, 277.Google Scholar
  9. 9.
    Chakravarti,J. Ind. Chem. Soc., 1931,8, 129; Heilborn, Barnes and Morton,ibid., J. Ind. Chem. Soc. 1923,123, 2569.Google Scholar
  10. 10.
    M. Sen,J. Ind. Chem. Soc., 1929,6, 925.Google Scholar
  11. 11.
    Baker,J. Chem. Soc., 1933, 1381.Google Scholar
  12. 12.
    Meldrum and Perkin,ibid.,, 1909,95, 1894.Google Scholar
  13. 13.
    Oppenheim and Pfaff,Ber., 1875,8, 889.Google Scholar
  14. 14.
    Schmitt and Burkard,ibid.,, 1887,20, 2701.Google Scholar

Copyright information

© Indian Academy of Sciences 1937

Authors and Affiliations

  • S. Zafaruddin Ahmad
    • 1
  • R. D. Desai
    • 1
  1. 1.Department of ChemistryMuslim UniversityAligarh

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