Aerobic Oxidation of Thiols to Disulfides by Silver‐Based Magnetic Catalyst. Issue 9 (2nd March 2018)

• Record Type: Journal Article
• Authors: Gaur, Rashmi; Yadav, Manavi; Gupta, Radhika; Arora, Gunjan; Rana, Pooja; Sharma, Rakesh K.
• Is Part Of: ChemistrySelect. Volume 3:Issue 9(2018)
• Page Start: 2502
• Page End: 2508
• Publication Date: 2018-03-02
• Subjects: aerobic oxidation -- heterogeneous catalyst -- oxidation of thiols -- silver based magnetic nanocatalyst; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201703020
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: In the present report, we have synthesized and characterized a magnetically retrievable, easily generated, chemically stable, and environmental friendly silver based nanocatalyst for the oxidation of thiols. The obtained heterogeneous catalyst was thoroughly characterized by various techniques including X‐ray diffraction studies, Fourier transform‐infrared spectroscopy, Transmission electron microscopy, Field emission‐ scanning electron microscopy analysis, Vibrating sample magnetometric analysis, inductively coupled plasma‐optical emission spectrometer and dispersive spectroscopic analysis. Excellent yield of disulfides can be easily obtained from corresponding thiols within 30 min through simple stirring in water at room temperature under aerobic condition. Further, this protocol involves low loading of silver and undergoes no leaching. Moreover, it also circumvents the use of harsh and expensive oxidising agents and bases. Additionally, superb catalytic activity, effortless catalytic recovery and recyclability of the catalyst upto seven consecutive runs without significant loss of activity, make the present protocol highly sustainable to deal with industrial needs as well as environmental and biological concerns. Abstract : An effective, simple and environmental friendly silver based magnetic nanocatalyst has been synthesized, characterized and applied in the selective aerobic oxidation of various thiols to afford disulfides in high yield within 30 min through simple stirring in water at room temperature under aerobic condition. Superb catalytic activity, simple recovery and recyclability of the catalyst up to seven consecutive runs without significant loss of activity are some of the merits of synthesized catalyst.