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Preparation, Characterization, and Application Magnetic Fe 3 O 4 @SiO 2 @Bi 2 O 3 Nanoparticles for the Synthesis of Diindolyloxindole Derivatives
Russian Journal of Inorganic Chemistry ( IF 2.1 ) Pub Date : 2020-07-02 , DOI: 10.1134/s0036023620060054 H. Hassani , S. Ebrahim , N. Feizi
中文翻译:
磁性Fe 3 O 4 @SiO 2 @Bi 2 O 3纳米粒子的制备,表征及应用合成二吲哚基羟吲哚衍生物
更新日期:2020-07-02
Russian Journal of Inorganic Chemistry ( IF 2.1 ) Pub Date : 2020-07-02 , DOI: 10.1134/s0036023620060054 H. Hassani , S. Ebrahim , N. Feizi
Abstract
In this study, synthesis of diindolyl oxindole derivatives has been developed by the coupling of indole compounds, isatin compounds, catalyzed with nanomagnetic Fe3O4@SiO2@Bi2O3. Reactions proceeded smoothly, and the corresponding heterocyclic products have been obtained in good to high yields. Magnetic Fe3O4@SiO2@Bi2O3 catalyst has been produced by the hydrothermal method. At first, the magnetic nanoparticles Fe3O4 have been produced as the core and subsequently they have been coated with SiO2; finally, in the third stage, Bi2O3 has been deposited on Fe3O4@SiO2. The synthesized catalyst has been characterized by Fourier-transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), thermal gravimetric analysis (TGA), dispersive energy X-ray spectroscopy (EDS), X-ray powder diffraction, vibrating sample Magnetometry (VSM), and transmission electron microscopy (TEM) techniques. This catalyst has been compared with other catalysts used in other methods for the synthesis of diindolyl oxindole derivatives. Using of water as the solvent, short reaction time, and recovery capability with a very slight reduction in the efficiency of the product even in the fourth stage of use are the advantages of application of this catalyst in the synthesis of derivatives of diindolyl oxindoles.中文翻译:
磁性Fe 3 O 4 @SiO 2 @Bi 2 O 3纳米粒子的制备,表征及应用合成二吲哚基羟吲哚衍生物