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  • Chem Sci Trans., 2014, 3(2),  pp 819-825  

    DOI:10.7598/cst2014.753

    Research Article

    SiO2/ZnCl2-Catalyzed Heterocyclic Synthesis: Green, Rapid and Efficient One-Pot Synthesis of 14-H-dibenzo [a, j]Xanthenes, 1,8-Dioxo-octahydroxanthenes and 1,8-Dioxo-Decahydroacridines Under Solvent-Free Conditions

  • HANAN A. SOLIMAN AHMAD Y. MUBARAK, AHMAD EL-MEKABATI and SAAD S. ELMORSY
  • Photochemistry Department, National Research Center, Dokki, Cairo, Egypt
    Chemistry Department, Faculty of Science, Mansoura University, 35516-Mansoura, Egypt
  • Abstract

    A green and highly efficient protocol for the one-pot synthesis of a variety of 14-aryl-14-H-dibenzo [a,j]xanthenes and 9-aryl-1,8-dioxo-octahydroxanthenes has been developed via cyclocondensation of aryl aldehydes with 2-naphthol or dimedone using SiO2-ZnCl2 (silzic) as a reusable heterogeneous catalyst under solvent-free reaction conditions. In addition, a one-pot, three-component condensation of aryl aldehydes, dimedone and ammonium acetate or aryl amines has been developed to furnish 9-aryl-1,8-dioxo-decahydroacridines in good to excellent yields under the same reaction conditions.

    Keywords

    Xanthenes, Acridine, Silzic, One-pot synthesis, Solvent-free, Heterogeneous catalyst, Multi-component reaction

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