Synthesis of Core‐Shell Magnetic Supramolecular Nanocatalysts based on Amino‐Functionalized Calix[4]arenes for the Synthesis of 4H‐Chromenes by Ultrasonic Waves
Reza Eivazzadeh‐Keihan,
Ehsan Bahojb Noruzi,
Fateme Radinekiyan,
Milad Salimi Bani,
Prof. Ali Maleki,
Dr. Behrouz Shaabani,
Prof. Mohammad Haghpanahi
Affiliations
Reza Eivazzadeh‐Keihan
Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry Iran University of Science and Technology Tehran 16846-13114 Iran
Ehsan Bahojb Noruzi
Faculty of Chemistry, Department of Inorganic Chemistry University of Tabriz Tabriz Iran
Fateme Radinekiyan
Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry Iran University of Science and Technology Tehran 16846-13114 Iran
Milad Salimi Bani
School of Mechanical Engineering Iran University of Science and Technology Tehran Iran
Prof. Ali Maleki
Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry Iran University of Science and Technology Tehran 16846-13114 Iran
Dr. Behrouz Shaabani
Faculty of Chemistry, Department of Inorganic Chemistry University of Tabriz Tabriz Iran
Prof. Mohammad Haghpanahi
School of Mechanical Engineering Iran University of Science and Technology Tehran Iran
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.
