0000000001299685

AUTHOR

Kathrin Wehming

showing 20 related works from this author

ChemInform Abstract: Powerful Fluoroalkoxy Molybdenum(V) Reagent for Selective Oxidative Arene Coupling Reaction.

2014

A novel dinuclear fluoroalkoxy Mo(V)-complex is efficient as reagent for the oxidative arene coupling of electron-rich arenes with superior reactivity compared to MoCl5 and MoCl5/TiCl4.

Coupling (electronics)chemistryMolybdenumReagentPolymer chemistrychemistry.chemical_elementReactivity (chemistry)General MedicineOxidative phosphorylationCoupling reactionChemInform
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Leistungsstarkes Fluoralkoxy-Molybdän(V)-Reagens für die selektive oxidative Arenkupplung

2014

Wir stellen ein neues Fluoralkoxy-Molybdan(V)-Reagens 1, mit im Vergleich zu MoCl5 oder MoCl5/TiCl4 hoherer Reaktivitat und Selektivitat in der oxidativen Kupplung von Arenen vor. Haufige Nebenreaktionen wie Chlorierung und/oder Oligomerenbildung werden erheblich reduziert, sodass ein leistungsstarkes und nutzliches Reagens fur die oxidative Kupplung erhalten wird. Theoretische Untersuchungen der Wechselwirkung des Reagens mit 1,2-Dimethoxybenzol-artigen Substraten deuten auf einen Innenspharen-Elektronentransfer gefolgt von einem radikalkationischen Reaktionspfad fur den oxidativen Kupplungsprozess hin. ESR-spektroskopische und elektrochemische Untersuchungen, Rontgenkristallstrukturanalys…

General MedicineAngewandte Chemie
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Oxidative cyclization reaction of 2-aryl-substituted cinnamates to form phenanthrene carboxylates by using MoCl5.

2014

The oxidative cyclization reaction of 2-aryl cinnamates and derivatives thereof can be easily performed with MoCl5 as the oxidant. This powerful reagent allows oxidative coupling reactions for which other reagents fail. The best results are obtained when the 2-phenyl substituent of the cinnamate is equipped with two methoxy groups. Even iodo moieties in the bay region of phenanthrene are tolerated under the reaction conditions. If naphthalene moieties are involved, a rearrangement of the skeleton occurs, providing an elegant route to highly functionalized angular arenes. The cyclization is demonstrated for 15 example substrates with isolated yields of up to 99 % for the phenanthrene derivat…

MolybdenumOxidative cyclizationArylOrganic ChemistrySubstituentCarboxylic AcidsGeneral ChemistryPhenanthrenePhenanthrenesMedicinal chemistryCatalysischemistry.chemical_compoundchemistryChloridesCinnamatesCyclizationReagentCinnamatesOrganic chemistryOxidative coupling of methaneOxidation-ReductionNaphthaleneChemistry (Weinheim an der Bergstrasse, Germany)
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ChemInform Abstract: Oxidative Cyclization Reaction of 2-Aryl-Substituted Cinnamates to Form Phenanthrene Carboxylates by Using MoCl5.

2015

The reagent mixture MoCl5/TiCl4 is successfully applied for the oxidative cyclization of α-aryl substituted cinnamates to the corresponding phenanthrenes.

Oxidative cyclizationchemistry.chemical_compoundChemistryArylReagentCinnamatesGeneral MedicinePhenanthrenesPhenanthreneMedicinal chemistryChemInform
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Molybdenum Pentachloride Mediated Synthesis of Spirocyclic Compounds by Intramolecular Oxidative Coupling

2015

The oxidative treatment of (m)ethyl 2-aryl cinnamates equipped with methoxy groups in position 4 of the phenyl moiety promote the formation of cyclohexadienone substructures. This dealkylative oxidative C–C coupling gives access to spirocyclic compounds and avoids the construction of the corresponding phenanthrenes. Furthermore, the transformation can be expanded to other spirocyclic systems.

010405 organic chemistryStereochemistryOrganic Chemistrychemistry.chemical_elementMolybdenum pentachloride010402 general chemistry01 natural sciences0104 chemical sciencesScholl reactionchemistryMolybdenumIntramolecular forceMoietyCinnamatesOxidative coupling of methanePhysical and Theoretical ChemistryPhenanthrenesEuropean Journal of Organic Chemistry
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Cover Picture: Oxidative Cyclization Reaction of 2-Aryl-Substituted Cinnamates To Form Phenanthrene Carboxylates by Using MoCl5 (Chem. Eur. J. 39/201…

2014

Oxidative cyclizationArylOrganic Chemistrychemistry.chemical_elementGeneral ChemistryPhenanthreneCatalysisC c couplingchemistry.chemical_compoundchemistryMolybdenumCinnamatesOrganic chemistryCover (algebra)Oxidative coupling of methaneChemistry - A European Journal
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ChemInform Abstract: Molybdenum Pentachloride Mediated Synthesis of Spirocyclic Compounds by Intramolecular Oxidative Coupling.

2016

Oxidative treatment of 4-methoxy substituted 2-aryl cinnamates leads to an dealkylative C—C coupling and gives access to spirocyclic compounds.

Coupling (electronics)ChemistryOxidative treatmentIntramolecular forceCinnamatesOxidative coupling of methaneGeneral MedicineMolybdenum pentachloridePhotochemistryChemInform
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Powerful Fluoroalkoxy Molybdenum(V) Reagent for Selective Oxidative Arene Coupling Reaction

2013

We introduce the novel fluoroalkoxy molybdenum(V) reagent 1 which has superior reactivity and selectivity in comparison to MoCl5 or the MoCl5 /TiCl4 reagent mixture in the oxidative coupling reactions of aryls. Common side reactions, such as chlorination and/or oligomer formation, are drastically diminished creating a powerful and useful reagent for oxidative coupling. Theoretical treatment of the reagent interaction with 1,2-dimethoxybenzene-type substrates indicates an inner-sphere electron transfer followed by a radical cationic reaction pathway for the oxidative-coupling process. EPR spectroscopic and electrochemical studies, X-ray analyses, computational investigations, and the experim…

Cationic polymerizationGeneral ChemistryPhotochemistryCombinatorial chemistryOligomerCatalysisCoupling reactionchemistry.chemical_compoundElectron transferchemistryReagentReactivity (chemistry)Oxidative coupling of methaneSelectivityAngewandte Chemie International Edition
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CCDC 1415863: Experimental Crystal Structure Determination

2016

Related Article: Moritz Schubert, Kathrin Wehming, Anton Kehl, Martin Nieger, Gregor Schnakenburg, Roland Fröhlich, Dieter Schollmeyer, Siegfried R. Waldvogel|2016|Eur.J.Org.Chem.|2016|60|doi:10.1002/ejoc.201501384

ethyl 2-(benzyloxy)-5'6'-dimethoxy-4-oxospiro[cyclohexa-25-diene-11'-indene]-3'-carboxylateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 966311: Experimental Crystal Structure Determination

2014

Related Article: Moritz Schubert, Jana Leppin, Kathrin Wehming, Dieter Schollmeyer, Katja Heinze and Siegfried R. Waldvogel|2014|Angew.Chem.,Int.Ed.|53|2494|doi:10.1002/anie.201309287

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersEthyl 4-chloro-12367-pentamethoxyphenanthrene-9-carboxylateExperimental 3D Coordinates
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CCDC 804368: Experimental Crystal Structure Determination

2015

Related Article: Kathrin Wehming, Moritz Schubert, Gregor Schnakenburg, Siegfried R. Waldvogel|2014|Chem.-Eur.J.|20|12463|doi:10.1002/chem.201403442

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersethyl 8912-trimethoxychrysene-6-carboxylateExperimental 3D Coordinates
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CCDC 1415860: Experimental Crystal Structure Determination

2016

Related Article: Moritz Schubert, Kathrin Wehming, Anton Kehl, Martin Nieger, Gregor Schnakenburg, Roland Fröhlich, Dieter Schollmeyer, Siegfried R. Waldvogel|2016|Eur.J.Org.Chem.|2016|60|doi:10.1002/ejoc.201501384

Space GroupCrystallographyCrystal Systemethyl 25'6'-trimethoxy-4-oxospiro[cyclohexa-25-diene-11'-indene]-3'-carboxylateCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1415861: Experimental Crystal Structure Determination

2016

Related Article: Moritz Schubert, Kathrin Wehming, Anton Kehl, Martin Nieger, Gregor Schnakenburg, Roland Fröhlich, Dieter Schollmeyer, Siegfried R. Waldvogel|2016|Eur.J.Org.Chem.|2016|60|doi:10.1002/ejoc.201501384

Space GroupCrystallographyethyl 255'6'-tetramethoxy-4-oxospiro[cyclohexa-25-diene-11'-indene]-3'-carboxylate dichloromethane solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1427184: Experimental Crystal Structure Determination

2016

Related Article: Moritz Schubert, Kathrin Wehming, Anton Kehl, Martin Nieger, Gregor Schnakenburg, Roland Fröhlich, Dieter Schollmeyer, Siegfried R. Waldvogel|2016|Eur.J.Org.Chem.|2016|60|doi:10.1002/ejoc.201501384

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersmethyl 5'6'-dimethoxy-4-oxospiro[cyclohexa-25-diene-11'-indene]-2'-carboxylateExperimental 3D Coordinates
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CCDC 1415862: Experimental Crystal Structure Determination

2016

Related Article: Moritz Schubert, Kathrin Wehming, Anton Kehl, Martin Nieger, Gregor Schnakenburg, Roland Fröhlich, Dieter Schollmeyer, Siegfried R. Waldvogel|2016|Eur.J.Org.Chem.|2016|60|doi:10.1002/ejoc.201501384

Space GroupCrystallographyethyl 25'6'-trimethoxy-4-oxospiro[cyclohexa-25-diene-11'-indene]-2'-carboxylateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1427185: Experimental Crystal Structure Determination

2016

Related Article: Moritz Schubert, Kathrin Wehming, Anton Kehl, Martin Nieger, Gregor Schnakenburg, Roland Fröhlich, Dieter Schollmeyer, Siegfried R. Waldvogel|2016|Eur.J.Org.Chem.|2016|60|doi:10.1002/ejoc.201501384

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters236'7'8'-pentamethoxy-3'-methyl-3'4'-dihydro-2'H4H-spiro[cyclohexa-25-diene-11'-naphthalen]-4-oneExperimental 3D Coordinates
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CCDC 1419863: Experimental Crystal Structure Determination

2016

Related Article: Moritz Schubert, Kathrin Wehming, Anton Kehl, Martin Nieger, Gregor Schnakenburg, Roland Fröhlich, Dieter Schollmeyer, Siegfried R. Waldvogel|2016|Eur.J.Org.Chem.|2016|60|doi:10.1002/ejoc.201501384

Space GroupCrystallographyethyl 5-bromo-25'6'-trimethoxy-4-oxospiro[cyclohexa-25-diene-11'-indene]-3'-carboxylate unknown solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 966309: Experimental Crystal Structure Determination

2014

Related Article: Moritz Schubert, Jana Leppin, Kathrin Wehming, Dieter Schollmeyer, Katja Heinze and Siegfried R. Waldvogel|2014|Angew.Chem.,Int.Ed.|53|2494|doi:10.1002/anie.201309287

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersbis(mu~2~-chloro)-tetrakis(111333-hexafluoropropan-2-olato)-tetrachloro-di-molybdenumExperimental 3D Coordinates
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CCDC 804367: Experimental Crystal Structure Determination

2015

Related Article: Kathrin Wehming, Moritz Schubert, Gregor Schnakenburg, Siegfried R. Waldvogel|2014|Chem.-Eur.J.|20|12463|doi:10.1002/chem.201403442

Space GroupCrystallographyethyl 4-bromo-2367-tetramethoxyphenanthrene-9-carboxylateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 966310: Experimental Crystal Structure Determination

2014

Related Article: Moritz Schubert, Jana Leppin, Kathrin Wehming, Dieter Schollmeyer, Katja Heinze and Siegfried R. Waldvogel|2014|Angew.Chem.,Int.Ed.|53|2494|doi:10.1002/anie.201309287

Space GroupCrystallographyCrystal SystemDichloro-hexakis(222-trifluoroethanolato)-bis(mu~2~-222-trifluoroethanolato)-di-molybdenumCrystal StructureCell ParametersExperimental 3D Coordinates
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