4.7 Article

Efficient synthesis of sulfones and sulfoxides from sulfides by cobalt-based Schiff complex supported on nanocellulose as catalyst and Oxone as the terminal oxidant

Journal

INORGANIC CHEMISTRY COMMUNICATIONS
Volume 148, Issue -, Pages -

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ELSEVIER
DOI: 10.1016/j.inoche.2022.110294

Keywords

Sulfide; Salen; Crown ether; Nanocellulose; Oxone; Sulfones; Sulfoxides

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The support of Schiff base catalysts on solid substrates, especially biocompatible ones, has become more important due to their incredible growth in chemical syntheses. In this study, cobalt-based Schiff catalysts were immobilized on nanocellulose and characterized by FT-IR, H NMR, EDX, and SEM. Among these catalysts, the one with a crown ether substitute showed superior catalytic activity for oxidation of sulfides. It is noteworthy that these catalysts can be recycled multiple times without losing efficiency.
Due to the unbelievable growth of Schiff base catalysts utilization in chemical syntheses, the importance of their support on solid substrates, especially biocompatible ones, has increased. In this study, stabilized cobalt-based Schiff catalysts were first immobilized on nanocellulose via synthesis. Then, they were characterized by FT-IR, H NMR, EDX, and SEM. Among these developed catalysts containing cobalt-based bis (imino) pyridine, the catalyst with a crown ether substitute showed superior catalytic activity for oxidation of sulfides to the corresponding r sulfones and sulfoxides. It is worth noting that these catalysts can be recycled and reused several times without reducing their efficiency.

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