An advanced novel magnetic ionic liquid based on imidazolium tagged with ferrocene, a supported ionic liquid, is introduced as a recyclable heterogeneous catalyst. Catalytic activity of the novel nanocatalyst was investigated in one-pot three-component reactions of various aldehydes, malononitrile and 2-naphthol for the facile synthesis of 2-amino-3-cyano-4H-pyran derivatives under solventfree conditions without additional co-catalyst or additive in air. For this purpose, we firstly synthesized and investigated 1-(4-ferrocenylbutyl)-3- . The synthesized novel catalyst was characterized using 1 H NMR, 13 C NMR, Fourier transform infrared and energy-dispersive X-ray spectroscopies, X-ray diffraction, and transmission and field emission scanning electron microscopies. Combination of some unique characteristics of ferrocene and the supported ionic liquid developed the catalytic activity in a simple, efficient, green and eco-friendly protocol. The catalyst could be reused several times without loss of activity.
Nanomagnetic bisethylferrocene-containing ionic liquid supported on silicacoated iron oxide (Fe 3 O 4 @SiO 2 @Im-bisethylFc [HC 2 O 4 ]) as a novel catalyst was designed and synthesized. The described catalyst was recycled and used without change in the time and efficiency of the condensation reaction. The Fourier transform-infrared spectroscopy (FT-IR), scanning electron microscopy images, X-ray diffraction patterns, energy-dispersive X-ray spectroscopy, transmission electron microscope and vibrating-sample magnetometer results confirmed the formation of Fe 3 O 4 @SiO 2 @Im-bisethylFc [HC 2 O 4 ] magnetic nanoparticle. The novel bis-coumarin derivatives were identified by 1 H-NMR, 13 C-NMR, FT-IR and CHNS analysis.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.