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Silica supported perchloric acid (HClO4-SiO2): A mild, reusable and highly efficient heterogeneous catalyst for the synthesis of 14-aryl or alkyl-14-H-dibenzo[a,j]xanthenes

2007; Elsevier BV; Volume: 275; Issue: 1-2 Linguagem: Inglês

10.1016/j.molcata.2007.05.007

1873-314X

Mohammad A. Bigdeli, Majid Μ. Heravi, Gholam Hossein Mahdavinia,

Synthesis of Organic Compounds

Abstract Silica supported perchloric acid (HClO 4 -SiO 2 ) is found to be a recyclable heterogeneous catalyst for a rapid and efficient synthesis of various 14-aryl or alkyl-14- H -dibenzo[ a , j ]xanthenes with good to excellent yields under reflux and solvent free conditions. The catalyst is easily prepared, stable, reusable and efficient under the reaction conditions.