An article New advances in catalytic performance of erbium-folic acid-coated CoFe2O4 complexes for green one-pot three-component synthesis of pyrano[2,3-d]pyrimidinone and dihydropyrano[3,2-c]chromenes compounds in water WOS:000643566600001 published article about HYDROXYAPATITE-CORE-SHELL-GAMMA-FE2O3 NANOPARTICLES; 5-SUBSTITUTED 1H-TETRAZOLES; MAGNETIC NANOPARTICLES; HETEROGENEOUS CATALYST; RECYCLABLE CATALYST; HIGHLY EFFICIENT; FACILE SYNTHESIS; DERIVATIVES in [Sorkhabi, Serve; Mozafari, Roya; Ghadermazi, Mohammad] Univ Kurdistan, Fac Sci, Dept Chem, Sanandaj, Iran in 2021, Cited 77. Recommanded Product: 123-11-5. The Name is 4-Methoxybenzaldehyde. Through research, I have a further understanding and discovery of 123-11-5
In the current research, much attention is paid to heterogenized nanostructure. Herein, we report the green synthesis magnetic nanoparticles (MNPs) of cobalt ferrite by the immobilization of erbium (Er) coated with folic acid (FA) which show effective catalytic properties and recyclability. Full characterizations with field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray atomic mapping, thermal gravimetric analysis (TGA), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), inductively coupled plasma-optical emission spectrometry (ICP-OES), and Fourier-transform infrared (FT-IR) spectroscopy techniques were undertaken to uncover structural properties of the prepared magnetic catalyst. The obtained nanohybrid complexes as efficient, recyclable, and green heterogeneous systems pave the way for producing pyrano[2,3-d]pyrimidinone and dihydropyrano[3,2-c]chromenes derivatives by the one-pot three-component condensation reaction of various aldehydes, malononitrile, and hydroxycoumarin or barbituric acid in green condition. This easily prepared organometalic catalyst presents many superiorities such as operational simplicity, high yield, short reaction time, utilization of commercially available or easily accessible starting materials, eco-friendly properties, and excellent purity. Most importantly, erbium-FA-coated CoFe2O4 can be easily separated and recycled from the reaction system using an external magnetic field. The magnetically recoverable biocatalyst can be recycled and reused six times while maintaining high activities. The activity of the magnetic catalyst can be maintained at more than 80% of that of the previous cycle. This research solves the recovery problem encountered in industrial applications of biocatalysts and presents a clean and green method for preparing pyrimidinones and chromenes.
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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles