903570-09-2Relevant academic research and scientific papers
Fe3O4/PEG-SO3H as a heterogeneous and magnetically-recyclable nanocatalyst for the oxidation of sulfides to sulfones or sulfoxides
Mirfakhraei, Saeideh,Hekmati, Malak,Eshbala, Fereshteh Hosseini,Veisi, Hojat
, p. 1757 - 1761 (2018/02/09)
We present below a sulfonated-polyethylene glycol-coated Fe3O4 nanocomposite (Fe3O4/PEG-SO3H) as a greatly effective and ecological nanocatalyst for the selective oxidation of sulfides to sulfoxides or sulfones with brilliant yields under solvent-free conditions by employing 30% hydrogen peroxide as the oxidant. A number of sulfides containing alcohol, ester, and aldehyde functional groups were fruitfully and selectively oxidized without altering the desired characteristics. The magnetic nanocatalyst (Fe3O4/PEG-SO3H) can be conveniently and swiftly retrieved through the utilization of an external magnetic tool and recycled for more than 10 reaction runs without significantly decreasing its catalytic behavior.
SULFOXIDATION CATALYSTS AND METHODS FOR THEIR PREPARATION AND USE
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Paragraph 0054; 055, (2016/09/26)
Methods and compositions of catalysts for sulfoxidation reaction processes are disclosed. The sulfoxidation reaction process can be performed in an aqueous medium, and the catalysts can be recycled for further use. In some embodiments, a method of making a catalyst may include contacting a transition metal compound with an oxidizing agent to form a first solution, contacting a carboxylic acid compound with a cationic surfactant to form a second solution, mixing the first solution and the second solution to form a precipitate, and isolating the precipitate.
A molybdenum based metallomicellar catalyst for controlled and selective sulfoxidation reactions in aqueous medium
Chakravarthy, Rajan Deepan,Ramkumar, Venkatachalam,Chand, Dillip Kumar
, p. 2190 - 2196 (2014/04/17)
A surfactant based molybdenum system that exhibits catalytic activity for sulfoxidation reactions of various organic sulfides in aqueous medium has been developed and comprehensively characterized using IR, XRD, NMR, ESI-MS, DLS and TEM. The catalyst showcases remarkable selectivity for the preparation of both sulfoxides and sulfones in the range of good to excellent yields. Furthermore, the catalyst showed a high degree of tolerance towards various sensitive functional groups such as hydroxyl, acetal, aldehyde, amine, imine, oxime, cyano and alkene. the Partner Organisations 2014.
