Research on Chemical Intermediates

, Volume 41, Issue 1, pp 409–417 | Cite as

Brønsted acidic ionic liquids catalyzed one-pot synthesis of benzoxanthene leuco-dye derivatives

  • Hamid Reza Shaterian
  • Kobra Azizi


Brønsted acidic ionic liquids, triphenyl(propyl-3-sulphonyl)phosphonium toluenesulfonate and N-methyl-2-pyrrolidonium hydrogen sulfate, are found to be efficient catalysts for the synthesis of 14-aryl-14H-dibenzo[a,i]xanthene-8,13-dione, 3,4-dihydro-2H-benzo[b]xanthene-1,6,11(12H)-trione, and aryl-5H-dibenzo[b,i]xanthene-5,7,12,14(13H)-tetraone derivatives under solvent-free conditions. The mentioned ionic liquids are recyclable catalysts and were reused several times without any significant loss of their activities. High conversions, shorter reaction times, cleaner reaction, and simple experimental and work-up procedures are advantages.


Brønsted acid Ionic liquid Catalyst Benzoxanthene Leuco-dye Solvent-free 



We are thankful to Sistan and Baluchestan University Research Council for the partial support of this research.


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of SciencesUniversity of Sistan and BaluchestanZahedanIran

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