Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (2): 242-246.DOI: 10.1016/S1872-2067(12)60761-X

• Research papers • Previous Articles     Next Articles

Silica-bonded propylpiperazine-N-sulfamic acid as recyclable solid acid catalyst for preparation of 2-amino-3-cyano-4-aryl-5,10-dioxo-5,10-dihydro-4H-benzo[g]chromenes and hydroxy-substituted naphthalene-1,4-dione derivatives

Fahime Khorami, Hamid Reza Shaterian   

  1. Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, PO Box 98135-674, Zahedan, Iran
  • Received:2013-08-31 Revised:2013-11-04 Online:2014-01-16 Published:2014-01-17
  • Contact: Hamid Reza Shaterian

Abstract:

An efficient method for the synthesis of 2-amino-3-cyano-4-aryl-5,10-dioxo-5,10-dihydro-4H-benzo[g]chromenes and hydroxy-substituted naphthalene-1,4-dione derivatives, using silica-bonded propylpiperazine-N-sulfamic acid as a solid acid, green, heterogeneous catalyst, under ambient and solvent-free conditions, is described. A simple procedure, high yields, short reaction time, safety, and reusability of the catalyst are advantages of these protocols.

Key words: Silica-bonded propylpiperazine-N-sulfamicacid, Aldehyde, Malononitrile, Amine, Solvent-free, 2-Hydroxynaphthalene-1,4-dione