Mahdian, Abolfazl; Ardakani, Mehdi Hatefi; Heydari-Bafrooei, Esmaeil; Saeednia, Samira published the artcile< Oxo-vanadium(IV) unsymmetrical Schiff base complex immobilized on γ-Fe2O3 nanoparticles: A novel and magnetically recoverable nanocatalyst for selective oxidation of sulfides and oxidative coupling of thiols>, Application In Synthesis of 699-12-7, the main research area is thioether Schiff base complex catalyst selective oxidation green chem; thiol supported oxovanadium Schiff base complex catalyst oxidative coupling; iron oxide support oxovanadium Schiff base complex preparation crystallinity.
An unsym. salen-type oxo-vanadium(IV) complex, [VO(salenac-OH)] (salenac-OH = [9-(2′,4′-dihydroxyphenyl)-5,8-diaza-4-methylnona-2,4,8-trienato](-2)), was synthesized and covalently immobilized on the surface of magnetic γ-Fe2O3 nanoparticles. The resulting γ-Fe2O3@[VO(salenac-OH)] nanoparticles were characterized by several techniques including Fourier transform IR (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning and transmission electron microscopies (SEM and TEM), energy-dispersive X-ray (EDX) spectroscopy, vibrating sample magnetometry (VSM), thermal gravimetric anal. (TGA), inductively coupled plasma (ICP), and elemental anal. The prepared γ-Fe2O3@[VO(salenac-OH)] nanoparticle was utilized as an efficient catalyst for selective oxidation of sulfides to sulfoxides using 30% H2O2 as oxidant and oxidative coupling of thiols into disulfides with urea/H2O2 (UHP) as an oxidizing reagent. The products were achieved with good to excellent yields at room temperature with no over-oxidation of sulfoxides and disulfides to unexpected byproducts. This catalyst were magnetically recovered by applying an external magnet and reused for five continuous cycles in both oxidation reactions without a significant loss in its catalytic activity. Furthermore, the FT-IR spectrum and XRD pattern of the recovered catalyst showed no critical change to those of the fresh one.
Applied Organometallic Chemistry published new progress about Crystallinity. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Application In Synthesis of 699-12-7.
Referemce:
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