0000000001307518

AUTHOR

Tobias Prenzel

showing 8 related works from this author

Cathodic Corrosion of Metal Electrodes—How to Prevent It in Electroorganic Synthesis

2021

The critical aspects of the corrosion of metal electrodes in cathodic reductions are covered. We discuss the involved mechanisms including alloying with alkali metals, cathodic etching in aqueous and aprotic media, and formation of metal hydrides and organometallics. Successful approaches that have been implemented to suppress cathodic corrosion are reviewed. We present several examples from electroorganic synthesis where the clever use of alloys instead of soft neat heavy metals and the application of protective cationic additives have allowed to successfully exploit these materials as cathodes. Because of the high overpotential for the hydrogen evolution reaction, such cathodes can contri…

010405 organic chemistrySide reactionchemistry.chemical_elementReviewGeneral ChemistryOverpotential010402 general chemistryElectrochemistryElectrosynthesis01 natural sciences0104 chemical sciencesCorrosionCathodic protectionMetalchemistryChemical engineeringvisual_artvisual_art.visual_art_mediumPlatinumChemical Reviews
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Investigations on isomerization and rearrangement of polycyclic arenes under oxidative conditions – Anodic versus reagent-mediated reactions

2019

Abstract Electro-organic conversions at an active molybdenum anode enable the formation of fused arenes. High chemoselectivity was achieved under anodic conditions, and a reagent-induced selectivity was observed by comparison with results of MoCl5-mediated reactions. Polycyclic arenes like phenanthrenes, triphenylenes, chrysenes, or helicenes were selectively obtained in yields up to 87% and in some cases unusual rearrangements were crucial for the product formation.

General Chemical Engineeringchemistry.chemical_elementOxidative couplingRearrangement02 engineering and technologyOxidative phosphorylation010402 general chemistry021001 nanoscience & nanotechnologyPhotochemistry01 natural sciencesElectrolysis0104 chemical sciencesAnodeAnodechemistryMolybdenumReagentElectrochemistryPhenanthrenesChemoselectivityPolycyclic arenes0210 nano-technologySelectivityIsomerizationElectrochimica Acta
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CCDC 1882077: Experimental Crystal Structure Determination

2019

Related Article: Sebastian B. Beil, Peter Franzmann, Timo Müller, Maximilian M. Hielscher, Tobias Prenzel, Dennis Pollok, Nicole Beiser, Dieter Schollmeyer, Siegfried R. Waldvogel|2018|Electrochimica Acta|302|310|doi:10.1016/j.electacta.2019.02.041

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters2367-tetramethoxy-1-phenyltriphenyleneExperimental 3D Coordinates
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CCDC 1882075: Experimental Crystal Structure Determination

2019

Related Article: Sebastian B. Beil, Peter Franzmann, Timo Müller, Maximilian M. Hielscher, Tobias Prenzel, Dennis Pollok, Nicole Beiser, Dieter Schollmeyer, Siegfried R. Waldvogel|2018|Electrochimica Acta|302|310|doi:10.1016/j.electacta.2019.02.041

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters3-(34-dimethoxyphenyl)-171011-tetramethoxytriphenylene dichloromethane solvateExperimental 3D Coordinates
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CCDC 1882076: Experimental Crystal Structure Determination

2019

Related Article: Sebastian B. Beil, Peter Franzmann, Timo Müller, Maximilian M. Hielscher, Tobias Prenzel, Dennis Pollok, Nicole Beiser, Dieter Schollmeyer, Siegfried R. Waldvogel|2018|Electrochimica Acta|302|310|doi:10.1016/j.electacta.2019.02.041

914-bis(ethoxycarbonyl)-2367-tetramethoxy[5]heliceneSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1882073: Experimental Crystal Structure Determination

2019

Related Article: Sebastian B. Beil, Peter Franzmann, Timo Müller, Maximilian M. Hielscher, Tobias Prenzel, Dennis Pollok, Nicole Beiser, Dieter Schollmeyer, Siegfried R. Waldvogel|2018|Electrochimica Acta|302|310|doi:10.1016/j.electacta.2019.02.041

diethyl 2351011-pentamethoxybenzo[c]chrysene-814-dicarboxylateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1882074: Experimental Crystal Structure Determination

2019

Related Article: Sebastian B. Beil, Peter Franzmann, Timo Müller, Maximilian M. Hielscher, Tobias Prenzel, Dennis Pollok, Nicole Beiser, Dieter Schollmeyer, Siegfried R. Waldvogel|2018|Electrochimica Acta|302|310|doi:10.1016/j.electacta.2019.02.041

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersdiethyl 6789-tetramethoxybenzo[ghi]perylene-411-dicarboxylate dichloromethane solvateExperimental 3D Coordinates
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CCDC 1882078: Experimental Crystal Structure Determination

2019

Related Article: Sebastian B. Beil, Peter Franzmann, Timo Müller, Maximilian M. Hielscher, Tobias Prenzel, Dennis Pollok, Nicole Beiser, Dieter Schollmeyer, Siegfried R. Waldvogel|2018|Electrochimica Acta|302|310|doi:10.1016/j.electacta.2019.02.041

23561011-hexamethoxy-8-methylbenzo[e]acephenanthryleneSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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