10.1007/s11164-018-3659-7
This study presents the synthesis of montmorillonite (MMT) supported Fe3O4 magnetic nanoparticles, which were used as heterogeneous nanocatalysts for the one-pot synthesis of indeno[1,2-b]indolone derivatives in aqueous media. The MMT@Fe3O4 nanocomposites were characterized using various techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), vibrating sample magnetometer (VSM), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FT-IR). The catalyst exhibited high efficiency in promoting the cyclocondensation of ninhydrin, 1,3-diketone compounds, and amine derivatives to generate the desired indeno[1,2-b]indolone derivatives in excellent yields under mild conditions. This study highlights the advantages of using MMT@Fe3O4 as an environmentally friendly, cost-effective, and recyclable catalyst, providing a green and efficient approach for the synthesis of these heterocyclic compounds of biological and pharmacological importance.
10.1016/j.molliq.2014.07.039
This research aimed to develop an efficient, green, and one-pot synthesis method for 1,3-thiazolidin-4-one using a magnetically recyclable ionic liquid (ILs) supported on FeNi3 nanocatalyst. The purpose was to create a highly active and stable catalyst with high densities of functional groups under solvent-free conditions, utilizing rapid and easy immobilization techniques and low-cost precursors. The study successfully synthesized FeNi3-ILs nanoparticles, characterized them, and demonstrated their catalytic activity, achieving high to excellent yields of 1,3-thiazolidin-4-ones. The catalyst was found to be easily recoverable and reusable without significant loss of activity. Key chemicals used in the process included FeCl2·4H2O, NiCl2·6H2O, ammonium hydroxide, hydrazine hydrate, tetraethyl orthosilicate (TEOS), chlorosulfonic acid, and ethanolamine. The research concluded that FeNi3-ILs MNPs are a promising catalyst for the efficient one-pot synthesis of 1,3-thiazolidin-4-one and contribute to the development of new catalytic systems for organic synthesis.
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