Ru-catalyzed oxidation of primary alcohols

Köckritz, Angela; Šebek, Michael; Dittmar, A.; Radnik, Jörg; Brückner, Angelika; Bentrup, Ursula; Pohl, M.-M; Hugl, Herbert; Mägerlein, Wolfgang

doi:10.1016/j.molcata.2005.10.020

Cited by 75 publications

(37 citation statements)

References 97 publications

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“…The immobilization of the homogeneous catalysts onto the solid supports supplies potential for enlarging the utilities of the heterogeneous catalysts to the homogeneous systems. In addition inorganic supports (Das et al, 2000;Kockritz et al, ), the polymeric supports have attained care because they are inert, nontoxic, nonvolatile, insoluble, and often recyclable. Chloromethylated polystyrene crosslinked with divinylbenzene is one of the most extensively used supports.…”

Section: Introductionmentioning

confidence: 99%

Polymer-anchoring Schiff base ligands and their metal complexes: Investigation of their electrochemical, photoluminescence, thermal and catalytic properties

Erkenez¹,

Tümer²

2019

Arabian Journal of Chemistry

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Please cite this article as: T. Erkenez, M. Tümer, Polymer-anchoring Schiff base ligands and their metal complexes: Investigation of their electrochemical, photoluminescence, thermal and catalytic properties, Arabian Journal of Chemistry (2015), doi: http://dx. AbstractIn this study, we prepared three polymer-anchored Schiff base ligands and their Cu(II), Co (II) and Ni(II) transition metal complexes. For this purpose, we synthesized three Schiff base ligands from the reaction of 2,4-dihydroxybenzaldehyde with diamines in the ethanol solution and characterized by the analytical and spectroscopic methods. We investigated the electrochemical and photophysical properties of the free Schiff base ligands in the different solvents and concentrations. In the electrochemical studies, we found that the ligands show the reversible and irreversible redox processes. In order to obtain the polymer-anchored ligands, we used Merrifield's peptide resin (PS) as solid support. The surface morphologies of the polymer anchored Schiff base ligands were done with the scanning electron microscopy (SEM). We did alkene epoxidation and alkane oxidation reactions of the metal complexes and used the cyclohexene, styrene, cyclohexane and cyclooctane as the substrate and they show the low catalytic activity. The metal complexes have not any selectivity in the oxidation reactions. The polymer anchored Schiff base ligands and their metal complexes have high thermal stability at the higher temperatures.

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Section: Introductionmentioning

confidence: 99%

Polymer-anchoring Schiff base ligands and their metal complexes: Investigation of their electrochemical, photoluminescence, thermal and catalytic properties

Erkenez¹,

Tümer²

2019

Arabian Journal of Chemistry

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“…Therefore, besides the catalytic properties of TiO 2 , it can be a suitable material for supporting catalytic active centers in heterogeneous catalysts. Particularly, TiO 2 supported ruthenium catalysts were utilized for diverse oxidation reactions including aerobic oxidation [18,19], catalytic wet air oxidation of various chemicals [20][21][22], and electro-oxidation of alcohols [23]. However, to the best of our knowledge, ruthenium incorporated TiO 2 has not been applied to the oxidation of alcohols under oxidant-free conditions.…”

Section: Introductionmentioning

confidence: 99%

Dehydrogenative Oxidation of Alcohols Catalyzed by Highly Dispersed Ruthenium Incorporated Titanium Oxide

et al. 2016

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Ruthenium incorporated titanium oxides (Ru x TiO 2 ) were prepared by a one-step hydrothermal method using Ti(SO 4 ) 2 and RuCl 3 as the precursor of Ti and Ru, respectively. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM), Energy-dispersive X-ray spectroscopy (EDS) mapping, and BET were applied for the analyses of catalysts. Ruthenium atoms are well dispersed in the anatase phase of TiO 2 and the crystallite size of Ru x TiO 2 (≈17 nm) is smaller than that of pure TiO 2 (≈45 nm). In particular, we found that our homemade pure TiO 2 exhibits a strong Lewis acid property. Therefore, the cooperation of ruthenium atoms playing a role in the hydride elimination and the Lewis acid site of TiO 2 can efficiently transfer primary alcohols into corresponding aldehydes in an oxidant-free condition.

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“…1 The oxidation of trimethylsilyl and tetrahydropyranyl ethers is an important transformation in organic synthesis, and several methods have been explored to accomplish such a conversion. [2][3][4][5][6][7][8][9] Some of these methods involve the use of expensive reagents, long reaction times, low yields of the products and tedious work-up.…”

Section: Introductionmentioning

confidence: 99%

NaHSO4.H2O promoted oxidative deprotection of trimethylsilyl, tetrahydropyranyl and methoxymethyl ethers with HIO3

Shirini¹,

Khademian²,

Abedini³

2008

Arkivoc

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Ru-catalyzed oxidation of primary alcohols

Cited by 75 publications

References 97 publications

Polymer-anchoring Schiff base ligands and their metal complexes: Investigation of their electrochemical, photoluminescence, thermal and catalytic properties

Polymer-anchoring Schiff base ligands and their metal complexes: Investigation of their electrochemical, photoluminescence, thermal and catalytic properties

Dehydrogenative Oxidation of Alcohols Catalyzed by Highly Dispersed Ruthenium Incorporated Titanium Oxide

NaHSO4.H2O promoted oxidative deprotection of trimethylsilyl, tetrahydropyranyl and methoxymethyl ethers with HIO3

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