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Updated: Jan 18, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Ceric Ammonium Nitrate Immobilized on Linoleic Acid-Functionalized Fe3O4 Nanoparticles as a Magnetically Recyclable
Rotcharin Sawisai1, Ratchaneekorn Wanchanthuek1, Widchaya Radchatawedchakoon1
1Creative Chemistry and Innovation Research Unit,Center of Excellence for Innovation in Chemistry (PERCH-CIC), Department of Chemistry, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand.
Abstract:
In this study, a novel magnetically recyclable catalyst was developed by immobilizing ceric ammonium nitrate (CAN) onto linoleic acid-functionalized magnetite nanoparticles (Fe3O4-LA@CAN). The catalyst was thoroughly characterized using FT-IR, XRD, TEM, SEM-EDX, VSM, TGA, and N2 adsorption-desorption analyses. The catalytic efficiency of Fe3O4-LA@CAN was evaluated in the C3-selective formylation of free (N-H) indole derivatives, exhibiting excellent activity and broad substrate scope. The catalyst was easily recovered from the reaction mixture using an external magnet and demonstrated remarkable reusability for at least ten consecutive cycles without significant loss in performance. This efficient, green, and reusable catalytic system provides a promising alternative to conventional formylation methods and highlights its potential for sustainable synthetic applications.
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