Preparation, Characterization and First Application of Alumina Supported Polyphosphoric Acid (PPA/Al2O3) as a Reusable Catalyst for the Synthesis of 14-Aryl-14H-dibenzo[a, j]xanthenes

Bulletin of the Korean chemical society

Mahmoud Ebrahimi¹  Haniyeh Norouzi¹  Mehdi Bakavoli¹  Abolghasem Davoodnia¹  Mohsen Zeinali-Dastmalbaf¹  Niloofar Tavakoli-Hoseini¹ 

关键词: Alumina supported polyphosphoric acid;    14-Aryl-14H-dibenzo[a;    j]xanthenes;    Heterogeneous catalysis;    Solvent-free conditions;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Alumina supported polyphosphoric acid (PPA/Al2O3) was successfully prepared by impregnation of alumina support by polyphosphoric acid and characterized using FT-IR spectroscopy, the N2 adsorption/desorption analysis (BET), thermal analysis (TG/DTG), and X-ray diffraction (XRD) techniques. The catalytic behavior of this new solid acid supported heterogeneous catalyst was checked in the synthesis of 14-aryl-14Hdibenzo[ a, j]xanthenes by cyclocondensation reaction of β-naphthol and aryl aldehydes under solvent-free conditions. The results showed that the novel catalyst has high activity and the desired products were obtained in very short reaction times with high yields. Moreover, the catalyst can be easily recovered by filtration and reused at least three times with only slight reduction in its catalytic activity.

【 授权许可】

Unknown