Magnetically recyclable sepiolite/iron oxide/cupric oxide nanocomposite as a novel catalyst for the synthesis of S‐aryl dithiocarbamates by CS bond formation

A convenient and efficient procedure is described for the synthesis of S‐aryl dithiocarbamates by CS bond formation through the coupling reaction of three components between secondary amines, carbon disulfide, and aryl iodides using magnetically separable and reusable sepiolite/iron oxide/cupric ox...

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Veröffentlicht in:Journal of the Chinese Chemical Society (Taipei) 2021-10, Vol.68 (10), p.1942-1953
Hauptverfasser: Bagheri, Fatemeh Hassani, Khabazzadeh, Hojatollah, Fayazi, Maryam
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Sprache:eng
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Zusammenfassung:A convenient and efficient procedure is described for the synthesis of S‐aryl dithiocarbamates by CS bond formation through the coupling reaction of three components between secondary amines, carbon disulfide, and aryl iodides using magnetically separable and reusable sepiolite/iron oxide/cupric oxide (SEP/Fe3O4/CuO) nanocomposite as a heterogeneous catalyst. The results show that (SEP/Fe3O4/CuO) nanocomposite has good activity, and could be easily separated from the reaction mixture using an external magnet. The high efficiency of the nanocomposite was related to the temperature of 100°С and dimethylformamide (DMF) as a solvent. The structure, morphology, and crystalline phases of the prepared (SEP/Fe3O4/CuO) nanocomposite were characterized by Fourier transform infrared spectroscopy (FT‐IR), vibrating‐sample magnetometer (VSM), scanning electron microscopy (SEM), inductively coupled plasma (ICP), and X‐ray powder diffraction (XRD). The (SEP/Fe3O4/CuO) nanocomposite has good activity for the synthesis of S‐aryl dithiocarbamates. SEP/Fe3O4/CuO nanocomposite could be easily separated from the reaction mixture using an external magnet. Nanocomposite can be used at least three times without significant loss in its activity.
ISSN:0009-4536
2192-6549
DOI:10.1002/jccs.202100049