Organic chemistry
Hamid Aliyan
Abstract
H3PW12O40 (PW12) was immobilized over mesoporous alumina through the reaction of mesoporous alumina functionalized 3-aminopropyl triethoxy silane (3-APTES) and PW12. The surface properties of the functionalized nanocomposite was analyzed by a series of characterization techniques like elemental analysis, ...
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H3PW12O40 (PW12) was immobilized over mesoporous alumina through the reaction of mesoporous alumina functionalized 3-aminopropyl triethoxy silane (3-APTES) and PW12. The surface properties of the functionalized nanocomposite was analyzed by a series of characterization techniques like elemental analysis, FTIR and XRD. XRD and adsorption–desorption analysis shows that the mesostructure of silica remains intact after various modifications, while spectral technique show the successful grafting of the neat PW12 inside the porous silica support. 3-Alkylindole derivatives were produced by ring opening of epoxides in the presence of PW12-APTES@ SBA-15 nanocomposites as an efficient catalyst. The catalyst can be reused for several times but it will be less active.
Organic chemistry
Zahra Mohagheghian; Razieh Fazaeli; Hamid Aliyan
Volume 4, Issue 2, pp. 133-235, Serial No. 11 , April 2016, , Pages 198-206
Abstract
A green, efficient and selective approach for the oxidation of sulfides to sulfoxides and sulfones with UHP at room temperature is reported. The reaction is performed in the presence of vanadia catalyst supported on mesocellular silica foam (MCF) with a V content ranging from 2% to 10% as heterogeneous ...
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A green, efficient and selective approach for the oxidation of sulfides to sulfoxides and sulfones with UHP at room temperature is reported. The reaction is performed in the presence of vanadia catalyst supported on mesocellular silica foam (MCF) with a V content ranging from 2% to 10% as heterogeneous and reusable catalyst. The structural and textural characterization of this catalyst were done using FTIR, X-ray diffraction, and N2 adsorption-desorption. This catalyst was found to be effective for selective oxidation of sulfides to sulfoxides and the 5.6% V/MCF catalyst showed the highest activity. It is noteworthy that the reaction tolerates oxidatively sensitive functional groups and the sulfur atom is selectively oxidized.