0000000000524158

AUTHOR

Valentina M. Breising

showing 8 related works from this author

Electrochemical synthesis of carbazoles by dehydrogenative coupling reaction

2020

Abstract A constant current protocol, employing undivided cells, a remarkably low supporting electrolyte concentration, inexpensive electrode materials, and a straightforward precursor synthesis enabling a novel access to N‐protected carbazoles by anodic N,C bond formation using directly generated amidyl radicals is reported. Scalability of the reaction is demonstrated and an easy deblocking of the benzoyl protecting group is presented.

Green chemistry540 Chemistry and allied sciencesDeblocking filterSupporting electrolyteRadicalSustainable Chemistry010402 general chemistryElectrochemistry01 natural sciencesCatalysisCoupling reactionNC couplingProtecting groupgreen chemistry010405 organic chemistryChemistryCommunicationOrganic Chemistryheterocyclic chemistryGeneral ChemistryCombinatorial chemistryCommunications0104 chemical sciencesAnodecarbazoleselectrochemistry540 Chemie
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Electrochemical Formation of 3,5-Diimido-1,2-dithiolanes by Dehydrogenative Coupling

2018

A synthetic approach to the cyclic disulfide moiety of 3,5-diimido-1,2-dithiolane derivatives starting with readily available precursors including the electrochemical coupling of dithioanilides is developed. The electrochemical key step provides sustainable synthetic access in high yields, using a very simple electrolysis setup.

Electrolysis010405 organic chemistryChemistryOrganic ChemistryDisulfide bond010402 general chemistryElectrochemistry01 natural sciencesBiochemistryCombinatorial chemistry0104 chemical scienceslaw.inventionCoupling (electronics)lawMoietyPhysical and Theoretical ChemistryOrganic Letters
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Electrochemical formation of N,N′-diarylhydrazines by dehydrogenative N–N homocoupling reaction

2020

Hydrazines represent a class of compounds of high interest due to their applicability as versatile starting materials in many important transformations. Herein, we report a synthetic approach to hydrazine derivatives using commercially available anilines and an anodic dehydrogenative N-N coupling reaction as the key step.

High interestChemistryMaterials ChemistryMetals and AlloysCeramics and CompositesGeneral ChemistryElectrochemistryCombinatorial chemistryCatalysisCoupling reactionHydrazine derivativesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsChemical Communications
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Electrochemical Synthesis of 5-Aryl-phenanthridin-6-one by Dehydrogenative N,C Bond Formation.

2018

Currently, the general synthesis of 5-aryl-phenanthridin-6-ones relies on the involvement of metal catalysis. Despite the urgent demand for green alternatives, avoiding synthetic routes that require transition metals for key roles is still challenging. Electrochemical efforts employing a constant potential protocol in divided cells revealed a possible alternative to the catalytic approach. A constant current protocol, undivided cells, and a remarkably low supporting electrolyte concentration enable a novel access to N-aryl-phenanthridin-6-ones by anodic N,C bond formation using directly generated amidyl radicals. Easy accessible starting materials, a broad scope of applicable functional gro…

Green chemistry010405 organic chemistrySupporting electrolyteArylRadicalOrganic ChemistryGeneral Chemistry010402 general chemistryElectrochemistry01 natural sciencesCombinatorial chemistryCatalysis0104 chemical sciencesCatalysisMetalchemistry.chemical_compoundTransition metalchemistryvisual_artvisual_art.visual_art_mediumChemistry (Weinheim an der Bergstrasse, Germany)
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CCDC 1866675: Experimental Crystal Structure Determination

2018

Related Article: Anton Kehl, Valentina M. Breising, Dieter Schollmeyer, Siegfried R. Waldvogel|2018|Chem.-Eur.J.|24|17230|doi:10.1002/chem.201804638

5-(4-chlorophenyl)phenanthridin-6(5H)-oneSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1979131: Experimental Crystal Structure Determination

2020

Related Article: Valentina M. Breising, Jacob M. Kayser, Anton Kehl, Dieter Schollmeyer, Johannes C. Liermann, Siegfried R. Waldvogel|2020|Chem.Commun.|56|4348|doi:10.1039/D0CC01052A

Space GroupCrystallographyCrystal SystemCrystal StructureN'-acetyl-NN'-bis[4-(trifluoromethyl)phenyl]acetohydrazideCell ParametersExperimental 3D Coordinates
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CCDC 1866690: Experimental Crystal Structure Determination

2018

Related Article: Valentina M. Breising, Tile Gieshoff, Anton Kehl, Vincent Kilian, Dieter Schollmeyer, Siegfried R. Waldvogel|2018|Org.Lett.|20|6785|doi:10.1021/acs.orglett.8b02904

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters44-dimethyl-N3N5-bis(4-methylphenyl)-12-dithiolane-35-diimineExperimental 3D Coordinates
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CCDC 1986341: Experimental Crystal Structure Determination

2020

Related Article: Anton Kehl, Niclas Schupp, Valentina M. Breising, Dieter Schollmeyer, Siegfried R. Waldvogel|2020|Chem.-Eur.J.|26|15847|doi:10.1002/chem.202003430

Space GroupCrystallographyCrystal System(9H-carbazol-9-yl)(phenyl)methanoneCrystal StructureCell ParametersExperimental 3D Coordinates
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