Stereoisomeric products of electrochemical reduction of heterocyclic Fischer aminocarbene Cr(0) complexes. Development of the electrochemistry-mass spectrometry tandem approach using biphasic (acetonitrile-hexane) preparative electrolysis

Metelková, Radka; Hoskovcová, Irena; Polášek, Miroslav; Urban, Jiřı́; David, Tomáš; Ludvı́k, Jiřı́

doi:10.1016/j.electacta.2014.10.110

Cited by 5 publications

(2 citation statements)

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“…[6][7][8] Since usable electrochemical system requires conductive media throughout an electrical circuit, addition of salt, such as tetra-ammonium salts with long chain alkyl groups that are soluble in organic solvents, is required to promote conductivity and maintain current in the system. [9] Due to the fact that resistance of the organic media can be reduced by reducing distanced between the two electrodes and increasing the electrode surface area, the analytical scale Pt microelectrodes can be applied without addition of salt. [10] Alternatively, two-phase system of aqueous electrolyte and organic solvent has been reported.…”

Section: Introductionmentioning

confidence: 99%

Development of Electrocoagulation and Detection Approaches for Manipulation of Volatile Compound Profiles in Organic Medium Supported Using Two‐Phase Electrolyte System

et al. 2020

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Electrocoagulation (EC) approach employing two aluminium electrodes and a two phase medium of aqueous solution of NaCl and hexane (2-phase-EC) was developed. The approach enabled electrochemical treatment of odor active compounds in perfume extract. The samples before and after 2-phase-EC at cathode, anode and between the two electrodes left for equilibrium after the treatment were analyzed by using solid phase micro extraction (SPME) and gas chromatography hyphenated with mass spectrometry (GCÀ MS). This allowed identification of volatile compounds in each sample based on comparison with MS and retention index database. After the treatment, the perfume smells were fresher, sweeter and more floral corresponding to their different types and amounts of the odor active compounds. The major odor active products mainly obtained at the anode of the 2-phase-EC system were methyl benzoate, 2-phenylethanol and benzyl acetate. The corresponding product at the cathode was phenylmethanol. Comparison of the investigated sample profiles further reveals enrichment of several compounds at each electrode without undergoing electrochemical reaction. The major reactant and product profiles were further investigated with Gas Analyzer revealing slower rate of decrease in the amounts of the characteristic m/z of the products during the 2-phase EC. The 2-phase-EC and analytical approach have a potential for application in the area of electrochemical reaction in organic media in the future.

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Section: Introductionmentioning

confidence: 99%

Development of Electrocoagulation and Detection Approaches for Manipulation of Volatile Compound Profiles in Organic Medium Supported Using Two‐Phase Electrolyte System

et al. 2020

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“…An electrocoagulation system consists of two conducting electrodes immersed in a container filled with electrolytes. When significantly high voltage is applied to the electrodes, the electrocoagulation occurs with the rate governed by the polarities of the two electrodes [3]. The wastewater treatment involves several processes including electrochemical reactions of chemicals at the electrodes resulting in the solid or gas products, corrosion of the electrodes which results in solid complexes (sludge) as a result of complexation between metal ions from the corroded electrode and hydroxides [4], coagulation and adsorption of chemical wastes onto the sludge and removal of the solid species.…”

Section: Chapter I Introduction 11 Problem Definitionmentioning

confidence: 99%

Electrocoagulation in two phase separation for manipulation of volatile compound profiles in perfumes

Thaveesangsakulthai¹

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Electrocoagulation (EC) approach employing two aluminium electrodes and a two phase medium of aqueous solution of NaCl and hexane (2-phase-EC) was developed. The approach enabled electrochemical treatment of odor active compounds in perfume extract. The samples before and after 2-phase-EC at cathode, anode and between the two electrodes left for equilibrium after the treatment were analyzed by using solid phase micro extraction (SPME) and gas chromatography hyphenated with mass spectrometry (GC-MS). This allowed identification of volatile compounds in each sample based on comparison with MS and retention index database. After the treatment, the perfume smells were fresher, sweeter and more floral corresponding to their different types and amounts of the odor active compounds. The major odor active products mainly obtained at the anode of the 2-phase-EC system were methyl benzoate, 2-phenylethanol and benzyl acetate. The corresponding product at the cathode was phenylmethanol. Comparison of the investigated sample profiles further reveals enrichment of several compounds at each electrode without undergoing electrochemical reaction. The major reactant and product profiles were further investigated with Gas Analyzer revealing slower rate of decrease in the amounts of the characteristic m/z of the products during the 2-phase EC. The 2-phase-EC and analytical approach have a potential for application in the area of electrochemical reaction in organic media in the future.

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Electrochemical approach to Fischer carbene complexes

Hoskovcová

Ludvı́k

2019

Current Opinion in Electrochemistry

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Stereoisomeric products of electrochemical reduction of heterocyclic Fischer aminocarbene Cr(0) complexes. Development of the electrochemistry-mass spectrometry tandem approach using biphasic (acetonitrile-hexane) preparative electrolysis

Cited by 5 publications

References 31 publications

Development of Electrocoagulation and Detection Approaches for Manipulation of Volatile Compound Profiles in Organic Medium Supported Using Two‐Phase Electrolyte System

Development of Electrocoagulation and Detection Approaches for Manipulation of Volatile Compound Profiles in Organic Medium Supported Using Two‐Phase Electrolyte System

Electrocoagulation in two phase separation for manipulation of volatile compound profiles in perfumes

Electrochemical approach to Fischer carbene complexes

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