111-48-8Relevant articles and documents
A magnetically retrievable heterogeneous copper nanocatalyst for the synthesis of 5-substituted tetrazoles and oxidation reactions
Darabi, Mitra,Tamoradi, Taiebeh,Ghadermazi, Mohammad,Ghorbani-Choghamarani, Arash
, p. 703 - 710 (2017)
Abstract: A copper complex anchored on functionalized Fe3O4 nanoparticles was prepared by a simple and inexpensive procedure using commercially available materials. The prepared catalyst was characterized by a range of physical and spectroscopic techniques. Ease of operation, high efficiency, eco-friendly procedure, easy separation of the catalyst and reusability for several consecutive runs without significant loss of its activity are several advantages of this catalyst. The catalytic activity has been explored for the oxidation of sulfides, oxidative coupling of thiols and synthesis of 5-substituted tetrazoles. Graphical Abstract: A magnetically retrievable heterogeneous copper nanocatalyst for the synthesis of 5-substituted tetrazoles and oxidation reactions[Figure not available: see fulltext.].
Synthesis of macroscopic monolithic metal-organic gels for ultra-fast destruction of chemical warfare agents
Li, Heguo,Pan, Hongjie,Tao, Cheng-An,Wang, Lingyun,Yang, Guang,Zhang, Shouxin,Zhou, Chuan
, p. 22125 - 22130 (2021)
The potential threat that has originated from chemical warfare agents (CWAs) has promoted the development of advanced materials to enhance the protection of civilian and military personnel. Zr-based metal-organic frameworks (Zr-MOFs) have recently been demonstrated as excellent catalysts for decomposing CWAs, but challenges of integrating the microcrystalline powders of Zr-MOFs into monoliths still remain. Herein, we report hierarchically porous monolithic UiO-66-X xerogels for the destruction of CWAs. We found that the UiO-66-NH2xerogel with a larger pore size and a higher surface area than the UiO-66-NH2powder possessed better degradability of 2-chloroethyl ethyl sulfide (2-CEES), which is a sulfur mustard simulant. These UiO-66-X xerogels exhibit outstanding performance for decomposing CWAs. The half-lives of vesicant agent sulfur mustard (HD) and nerve agentO-ethylS-[2-(diisopropylamino)ethyl] methylphosphonothioate (VX) are as short as 14.4 min and 1.5 min, respectively. This work is, to the best of our knowledge, the first report on macroscopic monolithic UiO-66-X xerogels for ultrafast decomposition of CWAs.
Metal ferrite nanoparticles: Synthesis, characterization, and studies on decontamination of sulfur mustard
Praveen Kumar,Prasad,Ramacharyulu,Singh, Beer,Anchal Roy
, p. 833 - 840 (2017)
Mg, Ca, Mn, Co, Ni, Cu, Zn, Mn-Zn, and Co-Zn metal ferrite and mixed metal ferrite nanoparticles were synthesized by co-precipitation method and were characterized by using transmission electron microscopy, X-ray diffraction, and nitrogen adsorption techn
La complex supported on magnetic nanoparticles: green, efficient, novel and reusable nanocatalyst for the synthesis of 5-substituted tetrazoles and the oxidation reactions in neat condition
Tamoradi, Taiebeh,Irandoust, Asrin,Ghadermazi, Mohammad
, p. 1723 - 1733 (2019)
In the present work, we were interested in the synthesis of green and novel magnetic nanocatalyst by anchoring La complex on Fe3O4. The nanocatalyst was successfully synthesized and characterized by FT-IR, SEM, TGA, XRD, EDX, and ICP techniques. The designed procedure shows many benefits such as short reaction time, high yield, excellent purity, eco-friendly catalyst, easy workup and easy recovery from the reaction mixture by external magnet. [Figure not available: see fulltext.].
A mechanism of alkali metal carbonates catalysing the synthesis of β-hydroxyethyl sulfide with mercaptan and ethylene carbonate
Liu, Dongliang,Thomas, Tiju,Gong, Hong,Li, Fei,Li, Qiang,Song, Lijuan,Azhagan, Tamil,Jiang, Heng,Yang, Minghui
, p. 9367 - 9374 (2019)
The reaction of β-hydroxyethylation is essential to the current practice of organic chemistry. Here, we proposed a new and green route to synthesize 2-hydroxyethyl n-alkyl sulfide with n-alkyl mercaptan and ethylene carbonate (EC) in the presence of alkali carbonates as catalysts and revealed the mechanism by experiments and theoretical calculations. The reaction reported proceeds rapidly with high yields when it is performed at 120 °C and the catalytic loading is ~1 mol%. This protocol is applicable to other mercaptans to synthesize the corresponding β-hydroxyethyl sulfide. Density functional theory-based calculations show the energy profile for the reaction pathway. The rate-determining step is the ring-opening of EC. A negatively charged O atom of alkali carbonates approaches the S atom of -SH under the influence of hydrogen bonds. An activated S atom that carries more negative charge serves as a nucleophilic reagent and assists in the ring-opening of EC by reducing the Mayer bond orders of the C1-O1 bond in EC. Alkali cations also contribute to the C1-O1 bond cleavage. The energy barrier for the ring-opening of EC decreases with the decrease of electronegativity of alkali cations. Subsequent transference of a H atom leads to the formation of β-hydroxyethyl sulfide, the dissociation of CO2 and the reduction of K2CO3
Zirconium oxide complex-functionalized MCM-41 nanostructure: An efficient and reusable mesoporous catalyst for oxidation of sulfides and oxidative coupling of thiols using hydrogen peroxide
Hajjami, Maryam,Shiri, Lotfi,Jahanbakhshi, Azar
, p. 668 - 673 (2015)
Zirconium oxide complex-functionalized mesoporous MCM-41 (Zr-oxide@MCM-41) as an efficient and reusable catalyst is reported for the oxidation of sulfides into sulfoxides using hydrogen peroxide (H2O2) as the oxidant, with short reaction times in good to excellent yields at room temperature under solvent-free conditions. Also, a simple and efficient method is reported for the oxidative coupling of thiols into corresponding disulfides in good to high yields using H2O2 as oxidant in the presence of Zr-oxide@MCM-41 as recoverable catalyst in ethanol at room temperature. A series of sulfides and thiols possessing functional groups was successfully converted into corresponding products. After completion of reactions the catalyst was easily separated with simple filtration from the reaction mixture and reused for several consecutive runs without significant loss of catalytic efficiency. The mesoporous catalyst was characterized using Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller surface area measurements, X-ray diffraction, transmission and scanning electron microscopies, energy-dispersive X-ray spectroscopy and thermogravimetric analysis.
Degradation of Sulfur Mustard on KF/Al2O3: The Role of Organic Solvents and Active Species
Fridkin, Gil,Columbus, Ishay,Yehezkel, Lea,Zafrani, Yossi
, p. 10541 - 10545 (2018/07/25)
Solvent effects on the ability of KF/Al2O3 supports to degrade the warfare agent sulfur mustard (HD) were explored. RP-KF/Al2O3 possessing hydroxide ions and ECUF/KF/Al2O3 holding fluoride