Author: Dennis Pollok

A Decade of Electrochemical Dehydrogenative C,C-Coupling of Aryls.

2019

The importance of sustainable and green synthetic protocols for the synthesis of fine chemicals has rapidly increased during the last decades in an effort to reduce the use of fossil fuels and other finite resources. The replacement of common reagents by electricity provides a cost- and atom-efficient, environmentally friendly, and inherently safe access to novel synthetic routes. The selective formation of carbon-carbon bonds between two distinct substrates is a crucial tool in organic chemistry. This fundamental transformation enables access to a broad variety of complex molecular architectures. In particular, the aryl-aryl bond formation has high significance for the preparation of organ…

010405 organic chemistryChemistrybusiness.industryFossil fuelMolecular ConformationGeneral MedicineGeneral ChemistryElectrochemical Techniques010402 general chemistryElectrochemistry01 natural sciencesCombinatorial chemistryHydrocarbons Aromatic0104 chemical sciencesC c couplingHydrogenationbusinessAccounts of chemical research

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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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Electro-organic synthesis – a 21st century technique

2020

The severe limitations of fossil fuels and finite resources influence the scientific community to reconsider chemical synthesis and establish sustainable techniques. Several promising methods have emerged, and electro-organic conversion has attracted particular attention from international academia and industry as an environmentally benign and cost-effective technique. The easy application, precise control, and safe conversion of substrates with intermediates only accessible by this method reveal novel pathways in synthetic organic chemistry. The popularity of electricity as a reagent is accompanied by the feasible conversion of bio-based feedstocks to limit the carbon footprint. Several mi…

Engineeringchemistry.chemical_compoundchemistrybusiness.industryFossil fuelCarbon footprintOrganic synthesisGeneral ChemistryBiochemical engineeringbusinessChemical Science

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Reproduzierbarkeit in der elektroorganischen Synthese – Mythen und Missverständnisse

2021

ChemistryGeneral MedicineAngewandte Chemie

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Reproducibility in Electroorganic Synthesis—Myths and Misunderstandings

2021

Abstract The use of electric current as a traceless activator and reagent is experiencing a renaissance. This sustainable synthetic method is evolving into a hot topic in contemporary organic chemistry. Since researchers with various scientific backgrounds are entering this interdisciplinary field, different parameters and methods are reported to describe the experiments. The variation in the reported parameters can lead to problems with the reproducibility of the reported electroorganic syntheses. As an example, parameters such as current density or electrode distance are in some cases more significant than often anticipated. This Minireview provides guidelines on reporting electrosyntheti…

parameterscathodeReproducibilityanodesynthesisElectroorganic Chemistry010405 organic chemistryComputer scienceThe RenaissanceMinireviewsGeneral Chemistry010402 general chemistry01 natural sciencesCatalysis0104 chemical scienceselectrochemistryMinireviewBiochemical engineeringAngewandte Chemie International Edition

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