Synthesis and characterization of tribenzyl ammonium-tribromide supported on magnetic Fe3O4 nanoparticles: a robust magnetically recoverable catalyst for the oxidative coupling of thiols and oxidation of sulfides

Synthesis and characterization of tribenzyl ammonium-tribromide supported on magnetic Fe3O4... Keywords Bromine source  Oxidation  Thiols  Sulfides  External magnet Recyclable catalyst Introduction Oxidative coupling of thiols and oxidation of sulfides are two fundamental transformations in organic chemistry because their products, namely disulfides and sulfoxides, respectively, are two important classes of organic sulfur compounds for which their application as precursors or intermediates in organic synthesis are highly regarded among organic chemists [1, 2]. Besides synthetic applications, interest in disulfides and sulfoxides has been amplified when it was revealed that they not only play a crucial role in the synthesis of natural products and valuable physiologically and pharmacologically active molecules but also exist as important integral and supplementary parts in many pharmaceutical and biological active molecules such as cystine, DTNB (Ellman’s reagent or 5,50-dithio-bis(2-nitroben- zoic acid), omeprazole and fipronil [3–6]. These fascinating applications have recently stimulated organic chemists to apply more and more focus on new, clean and economic methodologies for the synthesis of disulfides and sulfoxides. During recent years, a diverse range of reagents, catalysts and oxidants have been reported for the performance of these transformations [7]. A series of tremendous properties such as being inexpensive and environmentally benign as well as producing water as 123 Synthesis http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Synthesis and characterization of tribenzyl ammonium-tribromide supported on magnetic Fe3O4 nanoparticles: a robust magnetically recoverable catalyst for the oxidative coupling of thiols and oxidation of sulfides

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Publisher
Springer Journals
Copyright
Copyright © 2016 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-016-2790-6
Publisher site
See Article on Publisher Site

Abstract

Keywords Bromine source  Oxidation  Thiols  Sulfides  External magnet Recyclable catalyst Introduction Oxidative coupling of thiols and oxidation of sulfides are two fundamental transformations in organic chemistry because their products, namely disulfides and sulfoxides, respectively, are two important classes of organic sulfur compounds for which their application as precursors or intermediates in organic synthesis are highly regarded among organic chemists [1, 2]. Besides synthetic applications, interest in disulfides and sulfoxides has been amplified when it was revealed that they not only play a crucial role in the synthesis of natural products and valuable physiologically and pharmacologically active molecules but also exist as important integral and supplementary parts in many pharmaceutical and biological active molecules such as cystine, DTNB (Ellman’s reagent or 5,50-dithio-bis(2-nitroben- zoic acid), omeprazole and fipronil [3–6]. These fascinating applications have recently stimulated organic chemists to apply more and more focus on new, clean and economic methodologies for the synthesis of disulfides and sulfoxides. During recent years, a diverse range of reagents, catalysts and oxidants have been reported for the performance of these transformations [7]. A series of tremendous properties such as being inexpensive and environmentally benign as well as producing water as 123 Synthesis

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Nov 9, 2016

References

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