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A CaO Catalyzed Synthesis of Coumarin in Microwave

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Author Affiliations

  • 1Department of Chemistry, Sant Gadge Baba Amravati University, Amravati 444 602, Maharashtra, India
  • 2Department of Chemistry, Sant Gadge Baba Amravati University, Amravati 444 602, Maharashtra, India
  • 3Department of Chemistry, G.S. Tompe College, Chandur Bazar, Dist. Amravati 444 704, M.S., India
  • 4Department of Chemistry, G.S. Tompe College, Chandur Bazar, Dist. Amravati 444 704, M.S., India

Res.J.chem.sci., Volume 6, Issue (5), Pages 14-16, May,18 (2016)

Abstract

A Simple and efficient method for the synthesis of various coumarins from substituted phenols and ethylacetoacetate has been developed by using CaO as a catalyst in water under the microwave. The present methodology includes inexpensive catalyst, easy workup and basic reaction condition. The UV absorption of all the synthesised coumarine derivatives was recorded at &

References

  1. Meuly W.C. (1979)., Kirk-Othmer Encyclopedia of Chemical Technology., 3rd ed. John Wiley and Sons: New York 7, 196-906.
  2. Smitha G. and Sanjeeva R.C. (2004)., ZrCl4-catalyzed Pechmann reaction: Synthesis of coumarins under solventfree conditions., Synth. Commun. 34(21), 3997-4003.
  3. Wasserscheid P.J. and Keim W. (2000)., Ionic liquids-new “solution” for transition metal catalysis., Angew. Chem. Int. Ed, 39, 3772-3789.
  4. Welton T. (1999)., Room-temperature ionic liquids. Solvents for synthesis and catalysis., Chem. Rev., 99, 2071-2084.
  5. Blanchard L.A., Hancu D., Beckman E.J. & Brennecke J.F. (1999)., Green processing using ionic liquids and CO2., Nature, 399, 28-29.
  6. Brown R.A., Pollet P., Mckoon E., Eckert C.A., Liotta C.L. and Jessop P.G. (2001)., Asymmetric hydrogenation and catalyst recycling using ionic liquid and supercritical carbon dioxide., J. Am. Chem. Soc123, 1254-1255.
  7. Leitner W.A. (2003)., Greener solution., Nature, 423, 930-931.
  8. Yang, X.F., Wang M.,Varma R.S. and Li C.J. (2003)., Aldol- and Mannich-type reactions via in situ olefin migration in ionic liquid., Org. Lett., 5, 657-660.
  9. Kumar A. and Pawar S.S., (2004)., Converting exo-selective Diels-Alder reaction to endo-selective in chloroaluminate ionic liquids., J. Org. Chem., 69, 1419-1420.
  10. Desai H., D’Souza B.R., Foether D., Johnson B.F. and Lindsay H.A. (2007)., Regioselectivity in a highly efficient, microwave-assisted epoxide aminolysis., Synthesis, 902-910.
  11. Tan W., Zhao B.X., Sha L., Jiao P.F. and Wan M.S. (2006)., Microwave-assisted ring opening of epoxides in solvent-free conditions., Synth. Commun., 36, 1353-1359.