Synthesis of Heterogeneous Copper Catalyst Based on Amino‐Functionalized Triazine Rings Supported by Silica‐Gel for Oxidation of Alcohols

Kolahdoozan, Majid; Kalbasi, Roozbeh Javad; Hossaini, Mahshid

doi:10.1155/2013/749723

Cited by 8 publications

(4 citation statements)

References 22 publications

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“…Related Cu systems have been shown to catalyze aerobic oxidation of alcohols in other solvents including water and tetrahydrofuran (THF). [44][45][46] Catalytic trials of [L 3 -Cu] 2+ were conducted in THF and water under identical loading conditions as entry 10, Table 3. In comparision to acetonitrile solutions which yielded 76 ± 3.6% benzaldehyde, lower % yields of 24.04 ± 1.22 and 18.93 ± 2.32% were observed in THF and water, respectively.…”

Section: Catalytic Oxidationmentioning

confidence: 99%

Copper catalysed aerobic oxidation of benzylic alcohols in an imidazole containing N₄ ligand framework

et al. 2016

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The catalytic aerobic oxidation of benzylic alcohols to corresponding aldehydes has been investigated employing a tetradentate copper(ii) complex that incorporates N-methyl imidazole (NMI) as an integral part of an N-ligand framework. The complex [L-Cu] [(L = 1-methyl-4,5-dihydro-1H-imidazol-2-yl)methyl(2-ethyl)amine] has been synthesized, characterized by spectroscopic and structural techniques, and its catalytic activity towards the aerobic oxidation of benzylic alcohols studied under ambient conditions. Catalytic turnover required addition of the nitroxyl radical initiator TEMPO. No oxidation was observed with hydroxyl radical initiators HO or tetrabutylammonium hydroperoxide. Additional NMI enhanced turnover with yields up to 99% within 4 hours. The relative quantities of substrate, catalyst, TEMPO, and NMI were systematically varied in a series of experiments to determine optimal conditions. The effect of oxygen at various flow rates as an alternate to ambient aerobic conditions was also investigated.

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Section: Catalytic Oxidationmentioning

confidence: 99%

Copper catalysed aerobic oxidation of benzylic alcohols in an imidazole containing N₄ ligand framework

et al. 2016

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“…Many industrial applications including pharmaceutic, textile, plastic, colorant and surface active agent use 1,3,5 triazine derivatives, (Kurt, 2004; Blotny, 2006; Kolahdoozan et al , 2013). John et al used 4-amino-6-methyl-3-thi oxo-3,4-dihydro-1,2,4-triazin-5(2H)-one (AMTDT) and (4-amino-4H-1,2,4-triazole-3,5-diyl) dimethanol (ATD) as corrosion inhibitors in 1 N HCl solution on MS.…”

Section: Introductionmentioning

confidence: 99%

The adsorption and inhibition efficiency of 2-amino-4-methoxy-6-methyl-1,3,5-triazine for corrosion of mild steel in hydrochloric acid solution

Ökten,

Yıldız,

Sığırcık

2023

ACMM

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Purpose This study aims to prevent mild steel (MS) against corrosion in 0.5 M HCl solution, 2-amino-4-methoxy-6-methyl-1,3,5-triazine was used. The effectiveness of the compound as a corrosion inhibitor was studied via electrochemical, surface and theoretical calculation techniques. Design/methodology/approach For concentrations ranging from 0.5 to 10.0 mM, almost similar polarization resistances were obtained from electrochemical impedance spectroscopy (EIS) and linear polarization resistance tests. It also investigated inhibitive activity of 2-amino-4-methoxy-6-methyl-1,3,5-triazine on the steel surface using scanning electron and atomic force microscope instruments. Langmuir adsorption is the best matched isotherm for the adsorption of the inhibitor to the steel surface. Findings EIS method was used to determine inhibition efficiency, which was determined to be 95.7% for 10.0 mM inhibitor containing acid solution. Density functional theory’s predictions for quantum chemistry agreed well with the other experimental results. Originality/value The methods used in this study are effective and applicable; the used organic inhibitor is 2-amino-4-methoxy-6-methyl-1,3,5-triazine; and protective effectiveness is important, which is crucial for the task of MS corrosion prevention.

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“…�tilization of heterogeneous catalyst ful�lls some of the Green Chemistry criteria [4,5]. Of these, enhanced stability, higher selectivity, easier handling, simple workup procedures, nontoxicity, noncorrosiveness, mildness of the reaction conditions, ease of recovery, and reuse of the catalyst and the most important is that it can protects the water-sensitive Lewis acids from hydrolysis by atmospheric moisture until it is suspended in an appropriate solvent, where it can be used in a chemical reaction [5].…”

Section: Introductionmentioning

confidence: 99%

Development of a New Heterogeneous Lewis Acid Catalyst for Chemoselective Tetrahydropyranylation of Different Hydroxyl Compounds

Kolahdoozan

Hossaini

2012

Journal of Chemistry

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Amino functionalized triazine supported on silica-gel was prepared and characterized. This new triazine derivative was applied as a coordinating agent for aluminum chloride. This novel Lewis acid supported on heterogeneous surface was used as an effective catalyst for protection of alcohols and phenols in the presence of 3,4-dihydro-2H-pyran. This catalyst can be reused without any significant loss of activity, and it protects alcohols in the presence of phenols.

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Synthesis of Heterogeneous Copper Catalyst Based on Amino‐Functionalized Triazine Rings Supported by Silica‐Gel for Oxidation of Alcohols

Cited by 8 publications

References 22 publications

Copper catalysed aerobic oxidation of benzylic alcohols in an imidazole containing N₄ ligand framework

Copper catalysed aerobic oxidation of benzylic alcohols in an imidazole containing N₄ ligand framework

The adsorption and inhibition efficiency of 2-amino-4-methoxy-6-methyl-1,3,5-triazine for corrosion of mild steel in hydrochloric acid solution

Development of a New Heterogeneous Lewis Acid Catalyst for Chemoselective Tetrahydropyranylation of Different Hydroxyl Compounds

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Synthesis of Heterogeneous Copper Catalyst Based on Amino‐Functionalized Triazine Rings Supported by Silica‐Gel for Oxidation of Alcohols

Cited by 8 publications

References 22 publications

Copper catalysed aerobic oxidation of benzylic alcohols in an imidazole containing N4 ligand framework

Copper catalysed aerobic oxidation of benzylic alcohols in an imidazole containing N4 ligand framework

The adsorption and inhibition efficiency of 2-amino-4-methoxy-6-methyl-1,3,5-triazine for corrosion of mild steel in hydrochloric acid solution

Development of a New Heterogeneous Lewis Acid Catalyst for Chemoselective Tetrahydropyranylation of Different Hydroxyl Compounds

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Copper catalysed aerobic oxidation of benzylic alcohols in an imidazole containing N₄ ligand framework

Copper catalysed aerobic oxidation of benzylic alcohols in an imidazole containing N₄ ligand framework