Magnetically Retrievable Cobalt Ferrite Nanoparticles as Heterogeneous Catalyst for Synthesis of 1-Oxo-hexahydroxanthenes

Abstract

In present study, magnetically separable cobalt ferrite nanoparticles (CoFe2O4·NPs) have been prepared by low cost chemical precipitation method and reported as reusable, proficient heterogeneous catalyst for the synthesis of 1-oxo-hexahydroxanthenes among other ferrites. The structural and morphological studies by X-ray diffraction and scanning electron microscopy confirmed the formation of CoFe2O4 nanoparticles. The current protocol evaluated a proficient catalyst for reaction between various salicylaldehydes and 1,3-diketones. The ambient reaction conditions, shorter reaction time, good to excellent yields of the products, ease of purification of the products and reusa-bility of catalyst up to five catalytic cycles without significant loss of catalytic activity making the current protocol promising for its practical application.