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Published on: June 16, 2020
Eco-friendly and efficient synthesis of 1,4-dihydropyridines using a recyclable L-arginine-modified magnetic natural
Manuchehr Rahimi1, Zahra Lasemi2, Mohsen Zeeb1
1Department of Chemistry, ST.C., Islamic Azad University, Tehran, Iran.
Abstract:
A magnetic natural phosphate functionalized with arginine (MNP‑Arg) was synthesized and fully characterized using FTIR, XRD, XRF, SEM/EDS, VSM, and elemental analysis, which confirmed the successful functionalization and magnetic behavior of the synthesized catalyst. MNP‑Arg efficiently catalyzed the synthesis of 1,4‑dihydropyridines (1,4‑DHPs) in ethanol at room temperature under mild conditions, affording diverse products in 86-98% yield within 10-20 min using only 20 mg of catalyst. The catalyst was readily recoverable by magnetic separation and maintained activity for nine consecutive cycles, demonstrating high efficiency, recyclability, and improved environmental compatibility.
