@article { author = {Hassani, Hassan and Zakerinasab, Batol and Nozarie, Azadeh}, title = {Sulfonic acid supported on Fe2O3/VO2 nanocatalyst: A highly efficient and reusable nanocatalyst for synthesis of spirooxindole derivatives}, journal = {Asian Journal of Green Chemistry}, volume = {2}, number = {1}, pages = {59-69}, year = {2018}, publisher = {Sami Publishing Company}, issn = {2588-5839}, eissn = {2588-4328}, doi = {10.22631/ajgc.2017.101572.1032}, abstract = {Fe2O3/VO2/SO3H nanocatalyst is reported for simple, and three-component reaction for the synthesis of spirooxindole derivatives by the reaction of isatin, 1,3-cyclohexadiene and malonitrile in solvent-free condition. The method allows easy construction of a library of spirooxindoles in moderate to good yields. The prepared nanocomposite was characterized using fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), x-ray diffraction (XRD) analysis, and energy dispersive x-ray spectroscopy (EDX). The nanocomposite was easily recovered using an external magnet and reused several times without a significant loss of the efficiency.}, keywords = {Fe2O3/VO2/SO3H Spirooxindole Isatin 1,3-Cyclohexadiene Malonitrile}, url = {https://www.ajgreenchem.com/article_53824.html}, eprint = {https://www.ajgreenchem.com/article_53824_384beb8477cf9e67e60dff21d5793c33.pdf} }