HAp‐encapsulated γ‐Fe2O3‐supported dual acidic heterogeneous catalyst for highly efficient one‐pot synthesis of benzoxanthenones and 3‐pyranylindoles |
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Authors: | Leila Kheirkhah Manouchehr Mamaghani Asieh Yahyazadeh Nosrat Ollah Mahmoodi |
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Affiliation: | Department of Chemistry, Faculty of Sciences, University of Guilan, Rasht, Iran |
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Abstract: | A novel method is reported for the synthesis of benzoxanthenone and 3‐pyranylindole derivatives via one‐pot three‐component reactions using a newly synthesized HAp‐encapsulated γ‐Fe2O3‐supported dual acidic heterogeneous catalyst, as a reusable and highly efficient nanocatalyst. In this protocol the use of the nanocatalyst provided a green, useful and rapid method to generate products in short reaction times (4–20 min) and in excellent yields (87–96%). The paramagnetic nature of the catalyst provided a simple, trouble‐free and facile approach for the separation of the catalyst by applying an external magnet, and it could be used in eight cycles without significant loss in catalytic efficiency. |
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Keywords: | benzoxanthenone HAp‐encapsulated γ ‐Fe2O3 nanomagnetic catalyst 3‐pyranylindole supported ionic liquid |
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