Design, synthesis, characterization and catalytic performance of a new cellulose‐based magnetic nanocomposite in the one‐pot three‐component synthesis of α‐aminonitriles

Abstract

A sulfonated magnetic cellulose‐based nanocomposite was prepared and characterized using scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, X‐ray diffraction and Fourier transform infrared spectroscopy. Then, it was used as a green nanocatalyst for the synthesis of α‐aminonitriles by a one‐pot three‐component condensation reaction of aldehydes or ketones, amines and trimethylsilylcyanide in ethanol at room temperature. The reaction procedure is simple, yields are very high, reaction time is very short and the catalyst can be easily separated from the reaction mixture and reused in subsequent reactions without significant loss of catalytic activity. Copyright © 2016 John Wiley & Sons, Ltd.

Green multicomponent synthesis of four different classes of six-membered N-containing and O-containing heterocycles catalyzed by an efficient chitosan-based magnetic bionanocomposite

“…In continuation of our research to find sustainable and green routes for synthesis of chemically and biologically-important molecules and application of efficient and green catalysts in various organic reactions [9,[23][24][25][26][27][28], and due to the disadvantages of previously reported methods for synthesis of many class of heterocycles despite their valuable properties, we present a green and efficient synthesis method for synthesis of some nitrogen and oxygen containing heterocycles using a magnetic bionanocomposite, CuFe 2 O 4 /chitosan, as a recyclable and green catalyst. To the best of our knowledge, this is the first time that CuFe 2 O 4 /chitosan has been applied as catalyst for synthesis of these classes of heterocycles.…”

Synthesis and application of novel 1,2,3‐triazolylferrocene‐containing ionic liquid supported on Fe3O4 nanocatalyst in the synthesis of new pyran‐substituted Betti bases

“…Multicomponent reactions have major roles in organic synthesis because of their advantages such as high atom efficiency, environmental friendliness, time and energy saving and quick and simple performance . One of the important multicomponent reactions is the Betti reaction which was introduced by Mario Betti .…”

Sonochemical synthesis of chromenes catalyzed by L-phenyl alanine-attached nano-Fe3O4@SiO2

“…The core/shell Fe 3 O 4 nanoparticles can be recycled from the medium of reaction by external magnetic field (13,14). The surface of MNPs can be functionalized simply through suitable surface modifications to provide the attachment of a variety of favorable functionalities (15)(16)(17)(18)(19)(20)(21)(22)(23)(24). Therefor the modified magnetic nanoparticles with all these features are used for varied organic reactions under ultrasonic irradiations (25,26).…”