Synthesis of Core-Shell Magnetic Supramolecular Nanocatalysts based on Amino-Functionalized Calix[4]arenes for the Synthesis of 4H-Chromenes by Ultrasonic Waves |
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| Authors: | Reza Eivazzadeh-Keihan Ehsan Bahojb Noruzi Fateme Radinekiyan Milad Salimi Bani Prof. Ali Maleki Dr. Behrouz Shaabani Prof. Mohammad Haghpanahi |
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| Affiliation: | 1. Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114 Iran;2. Faculty of Chemistry, Department of Inorganic Chemistry, University of Tabriz, Tabriz, Iran;3. School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran |
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| Abstract: | One of the most common phenol-formaldehyde cyclic oligomers from hydroxyalkylation reactions that exhibit supramolecular chemistry are calixarenes. These macrocyclic compounds are qualified to act as synthetic catalysts due to their specific features including being able to form host-guest complexes, having unique structural scaffolds and their relative ease of chemical modifications with a variety of functions on their upper rim and lower rim. Here, a functional magnetic nanocatalyst was designed and synthesized by using a synthetic amino-functionalized calix[4]arene. Its catalytic activity was evaluated in a one-pot synthesis of 2-amino-4H-chromene derivatives. Besides, this novel magnetic nanocatalyst was characterized by spectroscopic and analytical techniques such as FT-IR, EDX, FE-SEM, TEM VSM, XRD analysis. |
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| Keywords: | 2-amino-4H-chromene calixarenes heterogeneous catalysis sonochemistry supramolecular chemistry |
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