Structure––reactivity relationships: the oxidation of aliphatic amines on the gold electrode

Łuczak, Teresa

doi:10.1007/s10800-006-9253-5

Cited by 15 publications

(9 citation statements)

References 47 publications

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“…1 (full lines). The current values of this peak were not a linear function of its concentration, as was observed previously 16 for isomeric butylamines. The cyclic voltammograms show the apparent oxidative reaction with maximum current values covering the whole range in the area of oxide formation.…”

Section: Cyclic Voltammetry Of Amphetaminesupporting

confidence: 69%

“…The cyclic voltammograms show the apparent oxidative reaction with maximum current values covering the whole range in the area of oxide formation. 16 This adsorptive behavior enabled a reproducible catalytic behavior of gold electrode in second sweep. It was recently published that the electro-oxidation of isomeric butylamines at a gold electrode in contact with an alkaline electrolyte solution was catalyzed by the gold oxide layer.…”

Section: Cyclic Voltammetry Of Amphetaminementioning

confidence: 94%

“…The mean recoveries for the two concentrations were 98.85 and 97.36 % with relative standard deviations of 0.141 and 1.226, respectively. Analysis of the A standard showed strong adsorption of the molecules on the surface of the gold electrode in the potential range preceding the oxidation, 16 blocking the surface and preventing its determination by the SW method. 22 Square wave voltammetry of MDMA Being a fast and sensitive technique with a low detection limit, square wave voltammetry was tested as a possible method for the quantitative determination of A and MDMA on a gold electrode.…”

Section: Determination Of a In Urine Samples Using Cyclic Voltammetrymentioning

confidence: 99%

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The use of a gold electrode for the determination of amphetamine derivatives and application to their analysis in human urine

Nevešćanin¹,

Avramov-Ivic²,

Petrovic³

et al. 2013

J Serb Chem Soc

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The catalytic abilities of gold electrode were tested for the quantitative determination of amphetamine (A) and 3,4-methylenedioxy-N-methylamphetamine (MDMA) standards by their oxidation using cyclic voltammetry (CV). The value of the oxidative currents of A and MDMA standards at 0.80 V vs. SCE in 0.05 M NaHCO3 at the scan rate of 50 mV/s is linear function of concentration in range of 110.9-258.9 mM and 38.7-229.2 mM, respectively. Square wave voltammetry (SWV) revealed linear increase of current with concentration of MDMA (range 30.9-91.6 mM) and thus quantitative determination of amphetamine derivates. SWV analysis is successfully performed in spiked urine samples as well. A and MDMA in the presence of sucrose and as a content in illegally produced tablets were also analyzed. The voltammetric determination of A and MDMA derivatives using CV and SWV at gold electrode is a rapid, selective and simple procedure and its accuracy was confirmed with reference method, high performance liquid chromatography (HPLC). The spiked urine samples analysis offers additional possibility for the rapid detection of A and MDMA in human urine

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Section: Cyclic Voltammetry Of Amphetaminesupporting

confidence: 69%

Section: Cyclic Voltammetry Of Amphetaminementioning

confidence: 94%

Section: Determination Of a In Urine Samples Using Cyclic Voltammetrymentioning

confidence: 99%

See 1 more Smart Citation

The use of a gold electrode for the determination of amphetamine derivatives and application to their analysis in human urine

Nevešćanin¹,

Avramov-Ivic²,

Petrovic³

et al. 2013

J Serb Chem Soc

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“…Recently, also an attempt was made to use electrochemical methods with employment of polycrystalline gold electrode but the results were unsatisfactory [7,8].…”

Section: Introductionmentioning

confidence: 99%

The influence of aliphatic amines on the potential of the structural transition (hex) → (1 × 1) for Au (100) electrode

Skołuda

2010

J Appl Electrochem

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The impact of the aliphatic amines on the potential (E T ) of the structural transition (hex) ? (1 9 1) for Au (100) electrode was investigated. This potential was shifted to more negative values as the concentration of a given amine increased. As E T depends linearly on the log of the bulk concentration for each amine it was suggested to use this relationship for quantitative determination of the amines. Moreover, it was shown that the presence of amines reduced the stability range of the (hex) structure in the following sequence methylamine \ ethylamine \ propylamine \ butylamine due to their increasing adsorbability. Furthermore, for a given concentration the introduction of each subsequent -CH 2 -group into the carbon chain of an amine is accompanied by the reduction of the stability range of ca. 23 mV.

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“…It is unlikely that oxidation of water causes this peak because no reduction of Pt oxide associated to water traces was detected. Even though there are no reported evidences on electro‐oxidation of alkyl amines in ILs, oxidation of dissolved EA is a feasible reaction that could be taken place at these potentials causing this peak. As EAN is hermetically stored as a liquid, during its storage the concentration of dissolved EA can build up from the ionic pair via autoprotolysis and reach equilibrium with evaporated EA.…”

Section: Resultsmentioning

confidence: 95%

Understanding the Role of Protic Ionic Liquids (PILs) in Reactive Systems: Rational Selection of PILs for the Design of Green Synthesis Strategies for Allylic Amines and β‐Amino Esters

et al. 2019

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The reactive behaviour of protic ionic liquids (PILs) has been shown to be governed not only by their chemical structures but also by their global compositions, which include the presence of free acids and bases at equilibrium with ionic pairs. Six PILs composed of primary, secondary, or tertiary alkyl ammonium cations with two couterions, nitrate or acetate, were tested in model reactions with unsaturated substrates. The free species that were naturally present in these liquids were identified by cyclic voltammetry. Only tributylammonium nitrate was found to be mostly composed just of the ionic pair; the other five PILs also contain variable amounts of free acid and amine. In reactive systems, these free species determine the products of the reaction. In particular, allylic amines and β‐amino esters were obtained in good yields (91 and 75 %, respectively) by reaction of conjugated dienes and acrylates in the presence of PILs. By taking into account the actual composition of each PIL, it was possible to direct the reaction path towards a specific product with good yields, to ensure acid catalysis, to avoid polymerization of the substrate, and to promote phase transfer of products. These results establish some useful guidelines for the rational design of new PIL‐based one‐step synthetic strategies.

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Structure––reactivity relationships: the oxidation of aliphatic amines on the gold electrode

Cited by 15 publications

References 47 publications

The use of a gold electrode for the determination of amphetamine derivatives and application to their analysis in human urine

The use of a gold electrode for the determination of amphetamine derivatives and application to their analysis in human urine

The influence of aliphatic amines on the potential of the structural transition (hex) → (1 × 1) for Au (100) electrode

Understanding the Role of Protic Ionic Liquids (PILs) in Reactive Systems: Rational Selection of PILs for the Design of Green Synthesis Strategies for Allylic Amines and β‐Amino Esters

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