Magnetic Core–Shell Nanoparticles Containing I 3 − $_{3}^{-}$ as a Novel Catalyst for the Facile Synthesis of Imidazole, Thiazole and Pyrimidine Derivatives in Solvent-Free Conditions

Abstract

A novel Fe3O4@SiO2@(CH2)3N+Me\(_{3}\textit {I}_{3}^{\mathrm {-}}\) magnetite nanoparticle was prepared and utilized in the synthetic conversion of aldehydes to imidazole derivatives in solvent-free conditions. These functionalized magnetic core–shell nanoparticles (MNPs) were characterized by standard techniques such as TEM, SEM, EDX, FTIR, XRD, and VSM. The workup of the reaction was very simple containing only a magnetic decantation. This novel catalyst could be separated easily and recycled several times without any significant decrease of catalytic activity.