Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (4): 573-578.DOI: 10.1016/S1872-2067(14)60030-9

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Condensation of 2-naphtol with arylaldehydes using acetic acid functionalized ionic liquids as highly efficient and reusable catalysts

Ahmad Reza Moosavi-Zarea, Mohammad Ali Zolfigolb, Omid Khaledianb, Vahid Khakyzadehb   

  1. a Department of Chemistry, University of Sayyed Jamaleddin Asadabadi, Asadabad, 6541835583, Iran;
    b Faculty of Chemistry, Bu Ali Sina University, Hamedan, 6517838683, Iran
  • Received:2013-12-03 Revised:2014-01-13 Online:2014-03-20 Published:2014-03-21
  • Contact: Ahmad Reza Moosavi-Zare,Mohammad Ali Zolfigol

Abstract:

An efficient solvent-free protocol for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes from the condensation of 2-naphthol with arylaldehydes, using acetic acid functionalized imidazolium salts (1-carboxymethyl-3-methylimidazolium bromide ([cmmim]Br) and 1-carboxymethy1-3-methylimidazolium tetrafluoroborate ([cmmim]BF4) as reusable catalysts, has been developed. The turn over frequency on the catalysts is several times higher than the other previously reported catalysts. Also, thermal gravimetric analysis and powder X-ray diffraction pattern of the catalysts have been studied.

Key words: 14-Aryl-14H-dibenzo[a,j]xanthene, Acetic acid functionalized ionic liquid, 2-Naphthol, Aldehyde, Catalyst, Solvent-free