[VO(acac)2] hybrid catalyst: from complex immobilization onto silica nanoparticles to catalytic application in the epoxidation of geraniol

Pereira, Clara; Silva, José F.; Pereira, A. M.; Araújo, João P.; Blanco, Ginesa; Pintado, José; Freire, Cristina

doi:10.1039/c1cy00090j

Cited by 52 publications

(44 citation statements)

References 62 publications

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“…Finally, comparison of the epoxidation results of geraniol catalyzed by Fe 3 O 4 @SiO 2 @CPTMS@‐Mel‐Naph‐VOcomplex in this work with some previously reported heterogeneous catalysts provided in Table reveals that conversion, selectivity, TON and TOF of our catalysis system is considerable …”

Section: Resultssupporting

confidence: 55%

Synthesis of a new schiff base oxovanadium complex with melamine and 2‐hydroxynaphtaldehyde on modified magnetic nanoparticles as catalyst for allyl alcohols and olefins epoxidation

Farzaneh

Asgharpour

2019

Applied Organom Chemis

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A new magnetically recoverable nanocatalyst designated as Fe3O4@SiO2@PTMS@Mel‐Naph‐VOcomplex was synthesize by covalent binding of a Schiff base ligand derived from melamine and 2‐hydroxy1naphtaldehyde on the surface of silica coated iron oxide magnetic nanoparticles followed by complexation with VO (acac)2. Characterization of the prepared nanocatalyst was accomplished with FT‐IR, XRD, SEM, HRTEM, VSM and atomic absorption techniques. It was found that the epoxidation of geraniol, trans‐2‐hexen‐1‐ol, 1‐octen‐3‐ol, norbornene, and cyclooctene is highly selective, affording quantitative yields of the corresponding epoxides with tert‐butyl hydroperoxide (TBHP) using Fe3O4@SiO2@Mel‐Naph‐VOcomplex as catalyst. High reaction yields, short reaction times, simple experimental and work up procedure, catalyst stability and excellent reusability even after five‐cycles of usage in the case of geraniol are some advantages of this research.

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Section: Resultssupporting

confidence: 55%

Synthesis of a new schiff base oxovanadium complex with melamine and 2‐hydroxynaphtaldehyde on modified magnetic nanoparticles as catalyst for allyl alcohols and olefins epoxidation

Farzaneh

Asgharpour

2019

Applied Organom Chemis

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“…1 shows FTIR spectra of SiO 2 (unmodified) and APTS grafted-SiO 2 . The comparison of two spectra reveals that the post-grafting of APTS onto SiO 2 , which is confirmed by the appearance of several new peaks in the ranges of 3000-2800 cm −1 and 750-650 cm −1 due to C H stretching and N H bending vibrations of APTS, respectively [36]. Afterwards, palladium NPs supported on 3- aminopropyltriethoxysilane functionalized silica (Pd@SiO 2 -NH 2 ) were simply and reproducibly prepared by following the procedure comprising of the conventional impregnation of Pd(II) onto support and its subsequent NaBH 4 reduction in water all at room temperature.…”

Section: The Preparation and Characterization Of Pd Nps Supported On mentioning

confidence: 56%

Palladium nanoparticles supported on amine-functionalized SiO2 for the catalytic hexavalent chromium reduction

Çelebı

Yurderi

Kaya

et al. 2016

Applied Catalysis B: Environmental

204

138

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“…It has also been used directly as catalyst precursor in organic chemistry, for example, in aerobic oxidations, epoxidations (e.g. of allylic alcohols, geraniol), sulfoxidations in combination with tert ‐butylhydroperoxide or H 2 O 2 , or immobilized in solid supports …”

Section: Introductionmentioning

confidence: 99%

Interaction of [V^IVO(acac)₂] with Human Serum Transferrin and Albumin

Correia

Chorna

Cavaco

et al. 2017

Chemistry An Asian Journal

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[VO(acac) ] is a remarkable vanadium compound and has potential as a therapeutic drug. It is important to clarify how it is transported in blood, but the reports addressing its binding to serum proteins have been contradictory. We use several spectroscopic and mass spectrometric techniques (ESI and MALDI-TOF), small-angle X-ray scattering and size exclusion chromatography (SEC) to characterize solutions containing [VO(acac) ] and either human serum apotransferrin (apoHTF) or albumin (HSA). DFT and modeling protein calculations are carried out to disclose the type of binding to apoHTF. The measured circular dichroism spectra, SEC and MALDI-TOF data clearly prove that at least two VO-acac moieties may bind to apoHTF, most probably forming [V O(acac)(apoHTF)] complexes with residues of the HTF binding sites. No indication of binding of [VO(acac) ] to HSA is obtained. We conclude that V O-acac species may be transported in blood by transferrin. At very low complex concentrations speciation calculations suggest that [(VO)(apoHTF)] species form.

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[VO(acac)2] hybrid catalyst: from complex immobilization onto silica nanoparticles to catalytic application in the epoxidation of geraniol

Cited by 52 publications

References 62 publications

Synthesis of a new schiff base oxovanadium complex with melamine and 2‐hydroxynaphtaldehyde on modified magnetic nanoparticles as catalyst for allyl alcohols and olefins epoxidation

Synthesis of a new schiff base oxovanadium complex with melamine and 2‐hydroxynaphtaldehyde on modified magnetic nanoparticles as catalyst for allyl alcohols and olefins epoxidation

Palladium nanoparticles supported on amine-functionalized SiO2 for the catalytic hexavalent chromium reduction

Interaction of [V^IVO(acac)₂] with Human Serum Transferrin and Albumin

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[VO(acac)2] hybrid catalyst: from complex immobilization onto silica nanoparticles to catalytic application in the epoxidation of geraniol

Cited by 52 publications

References 62 publications

Synthesis of a new schiff base oxovanadium complex with melamine and 2‐hydroxynaphtaldehyde on modified magnetic nanoparticles as catalyst for allyl alcohols and olefins epoxidation

Synthesis of a new schiff base oxovanadium complex with melamine and 2‐hydroxynaphtaldehyde on modified magnetic nanoparticles as catalyst for allyl alcohols and olefins epoxidation

Palladium nanoparticles supported on amine-functionalized SiO2 for the catalytic hexavalent chromium reduction

Interaction of [VIVO(acac)2] with Human Serum Transferrin and Albumin

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Interaction of [V^IVO(acac)₂] with Human Serum Transferrin and Albumin