Silica Gel‐Supported Polyphosphoric Acid (PPA/SiO2): An Efficient and Reusable Heterogeneous Catalyst for Facile Synthesis of 14‐Aryl‐14H‐dibenzo[a,j]xanthenes under Solvent‐free Conditions |
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| Authors: | Amir Khojastehnezhad Abolghasem Davoodnia Mehdi Bakavoli Niloofar Tavakoli‐Hoseini Mohsen Zeinali‐Dastmalbaf |
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| Institution: | Department of Chemistry, Faculty of Sciences, Islamic Azad University, Mashhad Branch, Mashhad, Iran |
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| Abstract: | A simple, efficient and green method for the synthesis of 14‐aryl‐14H‐dibenzoa,j]xanthenes by a one‐pot condensation reaction of β‐naphthol and aryl aldehydes using silica gel‐supported polyphosphoric acid (PPA/SiO2), an effective and reusable catalyst, under solvent‐free conditions is described. The present methodology offers several advantages, such as a simple procedure with an easy work‐up, short reaction times, high yields, and the absence of any volatile and hazardous organic solvents. |
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| Keywords: | 14‐Aryl‐14H‐dibenzo[a j]xanthenes PPA/SiO2 heterogeneous catalysis green chemistry solvent‐free conditions |
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