Superparamagnetic CuFeO2 nanoparticles were prepared and characterized by XRD, SEM, TEM, FRIR spectroscopy, and vibrating sample magnetometry techniques. The catalytic activity of CuFeO2 nanoparticles was investigated in the one‐pot, three‐component reaction of 2‐aminopyridines, aldehydes, and alkynes using citric acid–dimethylurea melt as a green solvent. An array of imidazo[1,2‐a]pyridines were obtained in good to excellent yields. The catalytic system can be successfully reused six times with keeping its catalytic performance.
A magnetic NiFe 2 O 4 supported glutamate-copper catalyst are prepared and applied for the synthesis of a wide variety of 1,2,3-triazoles in water at room temperature.
Green solvent and catalyst The cover picture presents an efficient and environmentally benign catalytic system that employs magnetic nano‐CuFeO2 in a recyclable citric acid‐dimethylurea melt. In their Full Paper on Z.‐H. Zhang and co‐workers describe a novel strategy for rapid access to imidazo[1,2‐a]pyridine derivatives based on a one‐pot three‐component reaction of 2‐aminopyridines, aldehydes, and alkynes. An array of imidazo[1,2‐a]pyridines could be obtained in good to excellent yields and the catalytic system can be readily recovered and recycled.
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