Ionic liquid immobilized on FeNi3 as catalysts for efficient, green, and one-pot synthesis of 1,3-thiazolidin-4-one

A magnetically ionic liquid (ILs) supported on FeNi3 nanocatalyst was synthesized and evaluated as a recoverable catalyst for the synthesis of 1,3-thiazolidin-4-one. The main targets are solvent-free conditions, rapid (immediately) and easy immobilization technique, and low cost precursors for the preparation of highly active and stable MPs with high densities of functional groups. The inorganic, magnetic, solid base catalyst was characterized via Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The catalyst is active for the synthesis of 1,3-thiazolidin-4-ones and the products are isolated in high to excellent yields. Supporting this base catalyst on magnetic particles offers a simple and non-energy-intensive method for recovery and reuse of the catalyst by applying an external magnet Isolated catalysts were reused for new rounds of reactions without significant loss of their catalytic activity. (C) 2014 Elsevier B.V. All rights reserved.