Organisch-Chemisches Institut	Tel. (0251) 83-33210 Fax: (0251) 83-39772 e-mail: orgchem@uni-muenster.de www: uni-muenster.de/Chemie.oc/
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Forschungsschwerpunkte 2003 - 2004    zurück    weiter

Prof. Dr. Ernst-Ulrich Würthwein Synthetic and physical organic chemistry   Synthesis, Conformational Analysis (D-NMR, ab initio Calculations), and Synthetic Applications of new Acyclic Heterosystems and Reactive Intermediates: Cationic Species: 2-Aza-allenium Salts and Heteroanalogues, N-Acyliminium Salts, Azapentadienylium Salts, Azatropylium Salts. Anionic Species: Aza-allyl- and Aza-pentadienyl metal compounds (Asymmetric Synthesis), Azapolyenyl metal compunds, Metallated Hydrazones. Neutral Species: Heterosubstituted Alkynes, Heterobutadienes, Oligonitriles, Oligo- und Polyheteropolyenes and their Metal Complexes. Ring-Chain Tautomerism. THEORETICAL CHEMISTRY (Computational Chemistry): ab initio, DFT and semi-empirical calculations of heterocyclic and heteroacyclic compounds. Funding: Fonds der Chemischen Industrie; Deutsche Forschungsgemeinschaft: Sonderforschungsbereich 424 "Molekulare Orientierung als Funktionskriterium in chemischen Systemen"; International Graduate College "Template Directed Chemical Synthesis"; International NRW Graduate School of Chemistry - Münster; BASF AG; Degussa AG. Publications: C. Möllers, J. Prigge, B. Wibbeling, R. Fröhlich, A. Brockmeyer, H. J. Schäfer, E. Schmälzlin, C. Bräuchle, K. Meerholz, E.-U. Würthwein, Eur. J. Org. Chem. 2003, 1198-1208: "Polyamino-Substituted 1-Oxa-3,5-diazahexatrienes and 1-Oxa-3,5,7-triazaocta tetraenes (N-Acyl-oligocyanamides): Synthesis, Structures, Cyclo voltammetry and NLO-Properties - Experiment and Theory." G. Erker, S. Grimme, G. Haufe, D. Hoppe, H. Redlich, E.-U. Würthwein, Forschungsjournal Universität Münster, 2003, 12, Heft Juni, 34-40: "Chiralität in der Chemie - Links- oder rechtsherum". T. P. M. Goumans, A. W. Ehlers, K. Lammertsma, E.-U. Würthwein, Eur. J. Org. Chem. 2003, 2941-2946: "endo/exo Preferences for Double Bonds in Three-Membered Rings Including Phosphorus Compounds." J. K. Eberhardt, R. Fröhlich, E.-U. Würthwein, J. Org. Chem, 2003, 6690-6694: "N-Acylamidine Palladium(II) Complexes: Synthesis, Structures and Catalytic Activity for Suzuki-Miyaura Cross-Coupling Reactions - Experiments and DFT Calculations." G. Becker, G. Ditten, S. Horner, A. H. Maulitz, E.-U. Würthwein: "Differing Affinities of the Triorganylsilyl and -stannyl Substituents for Oxygen or Nitrogen, and Phosphorus, Respectively," in Organosilicon Chemistry V - From Molecules to Materials (Herausgeber: N. Auner, J. Weis), Wiley-VCH Weinheim, 2003, 307-311. N. Habersaat, R. Fröhlich, E.-U. Würthwein, Eur. J. Org. Chem. 2004, 2567-2581: "4H-Imidazoles and Imidazoles from anionic and dipolar electrocyclization reactions of 2,4-diazapenta-1,3-dienes." K. Gerdes, P. Sagar, R. Fröhlich, B. Wibbeling, E.-U. Würthwein, "4,5-3H-Dihydrobenzo[c]azepines from 1,7-electrocyclization reactions of 2-aza-4,5-benzo-heptatrienyl Lithium Compounds", Eur. J. Org. Chem, 2004, 3465-3476. P. Sagar, R. Fröhlich, E.-U. Würthwein, " A Versatile Aminobenzannu lation Method Based on the Deprotonation of 2-(1-Alkynyl)-benzaldimines and Similar 2-Aza-2,4-heptadienyl-6-ynes: A Multistep Rearrangement Cascade", Angew. Chem. 2004, 116, 5812-5815; Angew. Chem. Int. Ed. Engl. 2004, 43, 5694-5967. T. P. M. Goumans, A. W. Ehlers, K. Lammertsma, E.-U. Würthwein, S. Grimme: "Improved Reaction and Activation Energies of [4+2] Cycloadditions, [3+3] Sigmatropic Rearrangements and Electrocyclizations with the Spin-Component-Scaled MP2 Method", Chem. Eur. J., 2004, 6468-6475. "N-substituierte N-Acylamidin-Übergangsmetallkomplexe und deren Verwendung als Katalysatoren" (Erf. J. K. Eberhardt, E.-U. Würthwein, 17. 6. 2004) BASF AG, DE 102 56 854 A1 Dissertations: J. K. Eberhardt: "Metallkomplexe mit Oligonitrilen - Synthese und Anwendung". (2003) N. Habersaat: "Ringschlußreaktionen von 2-Aza- und 2,4-Diazapentadienyl-Lithium-Verbindungen". (2003) K. Gerdes: "Elektrocyclisierungsreaktionen von Diaza-heptatrienyl- und benzannelierten Aza-heptatrienylmetall-Verbindungen - Synthese hochfunktiona lisierter Imidazole und Benzazepine". (2003) N. Heße: "1,3,5-Triazapentadiene: Darstellung, Strukturen, Reaktionen." (2004) H. Behrens: "Oligonitrile - verwzeigt, komplexiert und funktionell!" (2004) J. Prigge: "Funktionalisierte Oligonitrile: Verbindungen mit langkettigen Alkoxy phenylresten und Azobenzolderivate." (2004) P. Sagar: "Synthesis of Seven and Six Membered Ring Systems by Electrocyclization of 2-Aza-hepta-2,4,6-trienyl and 2-Aza-hepta-2,4-dien-6-ynyl Lithium Compounds." (2004)