Coworkers of the NMR department

Welcome to the NMR department!
© KB
  • Dr. Klaus Bergander

    Dipl. Chem.
    © Dr. K. Bergander
    Dipl. Chem.
    Head of NMR department
    Room 016 (Iso-Trakt)
    Corrensstraße 40
    48149 Münster
    Tel: +49 251 83 39776
    Fax: +49 251 83 36533
    klaube@wwu.de

    Positions

    since
    Head of NMR department at the Organisch-Chemischen Institut, WWU Münster

    Education

    Post-doctoral Fellow. Research Advisor: Prof. Dr. G. Erker, WWU Münster
    -
    PhD student at University of Siegen
    -
    Studies in Chemistry at University of Cologne

    Publications

    • Nairoukh Z, Wollenburg M, Schlepphorst C, Bergander K, Glorius F. The formation of all-cis-(multi)fluorinated piperidines by a dearomatization–hydrogenation process. Nature Chemistry. ; 11.
    • Nairoukh Z, Wollenburg M, Schlepphorst C, Bergander K, Glorius F. The formation of all-cis-(multi)fluorinated piperidines by a dearomatization–hydrogenation process. Nature Chemistry. ; 2019. doi: 10.1038/s41557-018-0197-2.

    • Bhunia A, Bergander K, Studer A. Cooperative Palladium/Lewis Acid-Catalyzed Transfer Hydrocyanation of Alkenes and Alkynes Using 1-Methylcyclohexa-2,5-diene-1-carbonitrile. Journal of the American Chemical Society. ; 140(47): 16353-16359. doi: 10.1021/jacs.8b10651.
    • Lerchen A, Knecht T, Koy M, Ernst J, Bergander K, Daniliuc C, Glorius F. Non-Directed Cross-Dehydrogenative (Hetero)arylation of Allylic C(sp3)−H bonds enabled by C−H Activation. Angewandte Chemie - International Edition. ; 57(46): 15248-15252. doi: 10.1002/anie.201807047.
    • Wang L, Xia Y, Bergander K, Studer A. Remote Site-Specific Radical Alkynylation of Unactivated C-H Bonds. Organic Letters. ; 20(18): 5817-5820. doi: 10.1021/acs.orglett.8b02514.

    • Uhl W., Keweloh L., Hepp A., Stegemann F., Layh M., Bergander K. Reactivity of a P–H Functionalized Al/P-Based Frustrated Lewis Pair – Hydrophosphination versus Classic Adduct Formation. Zeitschrift fur Anorganische und Allgemeine Chemie. ; 643(23): 1978-1990. doi: 10.1002/zaac.201700340.
    • Keuter J, Schwedtmann K, Hepp A, Bergander K, Janka O, Doerenkamp C, Eckert H, Mück-Lichtenfeld C, Lips F. Diradicaloid or Zwitterionic Character: The Non-Tetrahedral Unsaturated Compound [Si4{N(SiMe3)Dipp}4] with a Butterfly-type Si4 Substructure. Angewandte Chemie - International Edition. ; 56(44): 13866-13871. doi: 10.1002/anie.201705787.

    • Holtrichter-Rößmann T., Häger I., Daniliuc C., Fröhlich R., Bergander K., Troll C., Rieger B., Rojas R., Würthwein E. Catalytically Active N-Acylamidine-Zirconium Complexes: Synthesis, Structures, and Application in Ethylene Polymerization. Organometallics. ; 35(11): 1906-1915. doi: 10.1021/acs.organomet.6b00240.
    • Buß F., Mehlmann P., Mück-Lichtenfeld C., Bergander K., Dielmann F. Reversible Carbon Dioxide Binding by Simple Lewis Base Adducts with Electron-Rich Phosphines. Journal of the American Chemical Society. ; 138(6): 1840-1843. doi: 10.1021/jacs.5b13116.
    • Özgün T., Bergander K., Liu L., Daniliuc C., Grimme S., Kehr G., Erker G. A Frustrated Phosphane–Borane Lewis Pair and Hydrogen: A Kinetics Study. Chemistry - A European Journal. ; 22(34): 11958-11961. doi: 10.1002/chem.201603050.

    • Dewanji A., Mück-Lichtenfeld C., Bergander K., Daniliuc C., Studer A. C-F Activation in Perfluorinated Arenes with Isonitriles under UV-Light Irradiation. Chemistry - A European Journal. ; 21(35): 12295-12298. doi: 10.1002/chem.201502298.

    • Frommeyer M., Bergander K., Steinbüchel A. Guanidination of soluble lysine-rich cyanophycin yields a homoarginine-containing polyamide. Applied and Environmental Microbiology. ; 80(8): 2381-2389. doi: 10.1128/AEM.04013-13.
    • Jing Y., Mardyukov A., Bergander K., Daniliuc C., Studer A. Synthesis of bulky nitroxides, characterization, and their application in controlled radical polymerization. Macromolecules. ; 47(11): 3595-3602. doi: 10.1021/ma500639y.
    • Bergander K., Hüls D., Glaser S., Günther H., Luy B. A critical evaluation of heteronuclear TOCSY (HEHAHA) experiments for 1H,6Li spin pairs. Magnetic Resonance in Chemistry. ; null(null). doi: 10.1002/mrc.4131.
    • Kondratov I., Tolmachova N., Dolovanyuk V., Gerus I., Bergander K., Daniliuc C., Haufe G. Diels-Alder reaction of ethyl 3-benzamido-2-oxo-6-(trifluoromethyl)-2H- pyran-5-carboxylate with alkoxyalkenes as an effective approach to trifluoromethyl-containing 3-aminobenzoic acid derivatives. European Journal of Organic Chemistry. ; 2014(12): 2443-2450. doi: 10.1002/ejoc.201301485.

    • Holland MC, Paul S, Schweizer WB, Bergander K, Mück-Lichtenfeld C, Lakhdar S, Mayr H, Gilmour R. Noncovalent interactions in organocatalysis: modulating conformational diversity and reactivity in the MacMillan catalyst. Angewandte Chemie (International ed. in English). ; 52(31): 7967-71. doi: 10.1002/anie.201301864.
    • Von Bargen K., Niehaus E., Bergander K., Brun R., Tudzynski B., Humpf H. Structure elucidation and antimalarial activity of apicidin F: An apicidin-like compound produced by Fusarium fujikuroi. Journal of Natural Products. ; 76(11): 2136-2140. doi: 10.1021/np4006053.
    • Neue B., Reiermann R., Fröhlich R., Wibbeling B., Bergander K., Würthwein E. Isocyanide cyclization reactions: 4-methylene-4H-benzo[d][1,3]oxazine, 3-benzyl-4-methylene-3,4-dihydroquinazolines and 3-(4-benzyl)-3H-quinazolin-4- ones - Experiment and theory. European Journal of Organic Chemistry. ; null(22): 4944-4952. doi: 10.1002/ejoc.201300293.
    • Greb L., Daniliuc C., Bergander K., Paradies J. Functional-group tolerance in frustrated lewis pairs: hydrogenation of nitroolefins and acrylates. Angewandte Chemie - International Edition. ; 52(22): 5876-5879. doi: 10.1002/anie.201210175.

    • Kleigrewe K., Aydin F., Hogrefe K., Piecuch P., Bergander K., Würthwein E., Humpf H. Structure elucidation of new fusarins revealing insights in the rearrangement mechanisms of the fusarium mycotoxin fusarin C. Journal of Agricultural and Food Chemistry. ; 60(21): 5497-5505. doi: 10.1021/jf3009469.
    • Kondratov I., Dolovanyuk V., Tolmachova N., Gerus I., Bergander K., Fröhlich R., Haufe G. Reactions of β-alkoxyvinyl polyfluoroalkyl ketones with ethyl isocyanoacetate and its use for the synthesis of new polyfluoroalkyl pyrroles and pyrrolidines. Organic and Biomolecular Chemistry. ; 10(44): 8778-8785. doi: 10.1039/c2ob26176f.
    • Samanta R., Maji B., De Sarkar S., Bergander K., Fröhlich R., Mück-Lichtenfeld C., Mayr H., Studer A. Nucleophilic addition of enols and enamines to α,β-unsaturated acyl azoliums: Mechanistic studies. Angewandte Chemie - International Edition. ; 51(21): 5234-5238. doi: 10.1002/anie.201109042.
    • Kohler J., Bergander K., Fabian J., Schepmann D., Wunsch B. Enantiomerically pure 1,3-dioxanes as highly selective NMDA and σ1 receptor ligands. Journal of Medicinal Chemistry. ; 55(20): 8953-8957. doi: 10.1021/jm301166m.

    • Niewerth H, Bergander K, Chhabra SR, Williams P, Fetzner S. Synthesis and biotransformation of 2-alkyl-4(1H)-quinolones by recombinant Pseudomonas putida KT2440. Applied microbiology and biotechnology. ; 91(5): 1399-408. doi: 10.1007/s00253-011-3378-0.
    • Kleine T., Bergander K., Fröhlich R., Wibbeling B., Würthwein E. Ring-closure reactions of 1,2-diaza-4,5-benzoheptatrienyl metal compounds: Experiment and theory. Journal of Organic Chemistry. ; 76(7): 1979-1991. doi: 10.1021/jo2001534.
    • Husstedt W., Wiehle S., Stillig C., Bergander K., Grimme S., Haufe G. Synthesis and preferred conformations of all regio- and diastereoisomeric methyl 2,3-fluorohydroxyalkanoates. European Journal of Organic Chemistry. ; null(2): 355-363. doi: 10.1002/ejoc.201001224.
    • Tolmachova N., Dolovanyuk V., Gerus I., Kondratov I., Polovinko V., Bergander K., Haufe G. Catalytic hydrogenation of 3-amino-6-(trifluoromethyl)-5,6-dihydropyridin- 2(1 H)-ones and its use in the synthesis of trifluoromethyl-containing mimetics of ornithine and thalidomide. Synthesis. ; null(7): 1149-1156. doi: 10.1055/s-0030-1258448.

    • Fehling E., Bergander K., Klein E., Weber N., Vosmann K. Thiol-functionalized copolymeric polyesters by lipase-catalyzed esterification and transesterification of 1,12-dodecanedioic acid and its diethyl ester, respectively, with 1-thioglycerol. Biotechnology Letters. ; 32(10): 1463-1471. doi: 10.1007/s10529-010-0311-z.
    • Uhl W., Rohling M., Würthwein E., Ghavtadze N., Bergander K. Facile synthesis of an unsaturated spiro germane by hydroalumination and intramolecular 1,1-carbalumination. Organometallics. ; 29(21): 5236-5240. doi: 10.1021/om100359k.
    • Attwood P., Ludwig K., Bergander K., Besant P., Adina-Zada A., Krieglstein J., Klumpp S. Chemical phosphorylation of histidine-containing peptides based on the sequence of histone H4 and their dephosphorylation by protein histidine phosphatase. Biochimica et Biophysica Acta - Proteins and Proteomics. ; 1804(1): 199-205. doi: 10.1016/j.bbapap.2009.10.007.

    • Steinle A., Bergander K., Steinbüchel A. Metabolic engineering of Saccharomyces cerevisiae for production of novel cyanophycins with an extended range of constituent amino acids. Applied and Environmental Microbiology. ; 75(11): 3437-3446. doi: 10.1128/AEM.00383-09.
    • Klare H., Bergander K., Oestreich M. Taming the silylium ion for low-temperature diels-alder reactions. Angewandte Chemie - International Edition. ; 48(48): 9077-9079. doi: 10.1002/anie.200904520.
    • Spies P., Kehr G., Bergander K., Wibbeling B., Fröhlich R., Erker G. Metal-free dihydrogen activation chemistry: Structural and dynamic features of intramolecular P/B pairs. Dalton Transactions. ; null(9): 1534-1541. doi: 10.1039/b815832k.
    • Würtz S., Lohre C., Fröhlich R., Bergander K., Glorius F. IBiox[(-)-menthyl]: A sterically demanding chiral NHC ligand. Journal of the American Chemical Society. ; 131(24): 8344-8345. doi: 10.1021/ja901018g.
    • Eweiner F., Senda S., Bergander K., Mück-Lichtenfeld C., Grimme S., Fröhlich R., Aoyama M., Kawaguchi H., Ohki Y., Matsumoto T., Kehr G., Tatsumi K., Erker G. Evidence for a rapid degenerate hetero-cope-type rearrangement in [Cp*W(S) 2S-CH2-CH=CH2]. Chemistry - An Asian Journal. ; 4(12): 1830-1833. doi: 10.1002/asia.200900360.
    • Hill M., Herrmann C., Spies P., Kehr G., Bergander K., Fröhlich R., Erker G. Bifunctional Molecular Systems with Pendant Bis(pentafluorophenyl)boryl Groups: From Intramolecular CH-Activation to Heterolytic Dihydrogen Splitting. In: Hill M., Herrmann C., Spies P., Kehr G., Bergander K., Fröhlich R., Erker G., editors. : Activating Unreactive Substrates: The Role of Secondary Interactions. p. 209-230. doi: 10.1002/9783527625468.ch12.

    • Lange H., Bergander K., Fröhlich R., Kehr S., Nakamura S., Shibata N., Toru T., Hoppe D. Highly enantioselective reactions of configurationally labile epimeric diamine complexes of lithiated S-benzyl thiocarbamates. Chemistry - An Asian Journal. ; 3(1): 88-101. doi: 10.1002/asia.200700262.
    • Ghavtadze N., Fröhlich R., Bergander K., Würthwein E. Superelectrophilic intermediates in the synthesis of novel indenole derivatives via 1,5-cyclization reactions of 5-aryl-1-azapenta-1,4-dien-3-ones. Synthesis. ; null(21): 3397-3406. doi: 10.1055/s-0028-1083188.
    • Fehling E., Klein E., Vosmann K., Bergander K., Weber N. Linear copolymeric poly(thia-alkanedioates) by lipase-catalyzed esterification and transesterification of 3,3′-thiodipropionic acid and its dimethyl ester with α,ω-alkanediols. Biotechnology and Bioengineering. ; 99(5): 1074-1084. doi: 10.1002/bit.21704.
    • Becker J., Bergander K., Fröhlich R., Hoppe D. Asymmetric total synthesis and X-ray crystal structure of the cytotoxic marine diterpene (+)-vigulariol. Angewandte Chemie - International Edition. ; 47(9): 1654-1657. doi: 10.1002/anie.200704678.
    • Huber D., Kehr G., Bergander K., Fröhlich R., Erker G., Tanino S., Ohki Y., Tatsumi K. Heterolytic cleavage of dihydrogen by frustrated Lewis Pairs derived from α-(dimesitylphosphino)ferrocenes and B(C6F5) 3. Organometallics. ; 27(20): 5279-5284. doi: 10.1021/om800339c.

    • Brühl L., Matthäus B., Fehling E., Wiege B., Lehmann B., Luftmann H., Bergander K., Quiroga K., Scheipers A., Frank O., Hofmann T. Identification of bitter off-taste compounds in the stored cold pressed linseed oil. Journal of Agricultural and Food Chemistry. ; 55(19): 7864-7868. doi: 10.1021/jf071136k.
    • Sonawane R., Mück-Lichtenfeld C., Fröhlich R., Bergander K., Hoppe D. Highly diastereoselective lithiation and substitution of an (S)-prolinyl thiocarbamate via sterically homogeneous lithio(thiocarbamate): Synthesis of enantiomerically pure prolinethiols. Chemistry - A European Journal. ; 13(22): 6419-6429. doi: 10.1002/chem.200601853.
    • Lyaskovskyy V., Bergander K., Fröhlich R., Würthwein E. Novel synthesis of azepine derivatives via copper-mediated cyclization of 2-Aza-hepta-2,4-dien-6-ynyl anions. Intramolecular addition of organocopper centers to the C-C triple bond. Organic Letters. ; 9(6): 1049-1052. doi: 10.1021/ol063081y.
    • Spies P., Erker G., Kehr G., Bergander K., Fröhlich R., Grimme S., Stephan D. Rapid intramolecular heterolytic dihydrogen activation by a four-membered heterocyclic phosphane-borane adduct. Chemical Communications. ; null(47): 5072-5074. doi: 10.1039/b710475h.
    • Chen Y., Redlich H., Bergander K., Fröhlich R. D-Glucosamine trimethylene dithioacetal derivatives: Formation of six- and seven-membered ring amino carbasugars. Synthesis of (-)-calystegine B 3. Organic and Biomolecular Chemistry. ; 5(20): 3330-3339. doi: 10.1039/b711112f.

    • Paradies J., Greger I., Kehr G., Erker G., Bergander K., Fröhlich R. Formation of an organometallic ladderane derivative by dynamic topochemical reaction control. Angewandte Chemie - International Edition. ; 45(45): 7630-7633. doi: 10.1002/anie.200601592.
    • Malkowsky I., Rommel C., Wedeking K., Fröhlich R., Bergander K., Nieger M., Quaiser C., Griesbach U., Pütter H., Waldvogel S. Facile and highly diastereoselective formation of a novel pentacyclic scaffold by direct anodic oxidation of 2,4-dimethylphenol. European Journal of Organic Chemistry. ; null(1): 241-245. doi: 10.1002/ejoc.200500517.
    • Weber N., Bergander K., Fehling E., Klein E., Vosmann K., Mukherjee K. Copolymeric polythioesters by lipase-catalyzed thioesterification and transthioesterification of α,ω-alkanedithiols. Applied Microbiology and Biotechnology. ; 70(3): 290-297. doi: 10.1007/s00253-005-027-5.

    • Tian X., Woski M., Lustig C., Pape T., Fröhlich R., Van Le D., Bergander K., Mitzel N. N,N-diisopropylaminomethyllithium: Synthesis, oxidative degradation, and organoaluminum and -gallium derivatives. Organometallics. ; 24(1): 82-88. doi: 10.1021/om049631i.
    • Shendage D., Fröhlich R., Bergander K., Haufe G. Asymmetric synthesis of γ-fluorinated α-amino acid derivatives. European Journal of Organic Chemistry. ; null(4): 719-727. doi: 10.1002/ejoc.200400665.

    • Hannig F., Fröhlich R., Bergander K., Erker G., Petersen J. Structural and spectroscopic evidence for intramolecular agostic M⋯H-C and dative Zr←-F-C(ortho) interactions in the zwitterionic metal complexes [(C 5H 4)SiMe 2(N-t-Bu)]M(+)(μ-C 4H 6)B(-)(C 6F 5) 3, M = Ti, Zr. Organometallics. ; 23(19): 4495-4502. doi: 10.1021/om040057k.
    • Seidel W., Ibarra Arias M., Schaffrath M., Bergander K. A neutral tungsten-η2-alkyne-1-thio ligand forming a homoleptic Werner type complex with Cu(I). Dalton Transactions. ; null(14): 2053-2054. doi: 10.1039/b404821k.

    • Döring S., Kotov V., Erker G., Kehr G., Bergander K., Kataeva O., Fröhlich R. Synthesis and dynamic features of (chloro)zirconocene cations stabilised by pendant (diarylphosphanyl)alkyl and (dimethylamino)alkyl substituents at their cyclopentadienyl ring systems. European Journal of Inorganic Chemistry. ; null(8): 1599-1607.
    • Vagedes D., Erker G., Kehr G., Bergander K., Kataeva O., Fröhlich R., Grimme S., Mück-Lichtenfeld C. Tris(pentafluorophenyl)borane adducts of substituted imidazoles: Conformational features and chemical behavior upon deprotonation. Dalton Transactions. ; null(7): 1337-1344. doi: 10.1039/b210030b.
    • Schopohl M., Bergander K., Kataeva O., Fröhlich R., Waldvogel S. Synthesis and Characterization of Enantiomerically Pure Menthylamines and Their Isocyanates. Synthesis. ; null(17): 2689-2694.
    • Kramer B., Fröhlich R., Bergander K., Waldvogel S. The O-substitution pattern of the MoCl5-mediated oxidative aryl-aryl coupling reaction. Synthesis. ; null(1): 91-96.
    • Chankvetadze B., Lomsadze K., Burjanadze N., Breitkreutz J., Pintore G., Chessa M., Bergander K., Blaschke G. Comparative enantioseparations with native β-cyclodextrin, randomly acetylated β-cyclodextrin and heptakis-(2,3-di-O-acetyl β-cyclodextrin in capillary electrophoresis. Electrophoresis. ; 24(6): 1083-1091. doi: 10.1002/elps.200390126.

    • Chankvetadze B., Burjanadze N., Breitkreutz J., Bergander K., Bergenthal D., Kataeva O., Fröhlich R., Luftmann H., Blaschke G. Mechanistic study on the opposite migration order of the enantiomers of ketamine with α- and β-cyclodextrin in capillary electrophoresis. Journal of Separation Science. ; 25(null): 1155-1166. doi: 10.1002/1615-9314(20021101)25:15/171155::AID-JSSC1155>3.0.CO;2-M.
    • Chankvetadze B., Burjanadze N., Bergander K., Blaschke G. Enantioseparation of glutethimide and its 5-OH-metabolite in capillary electrophoresis and study of selector-selectand interactions using one-dimensional rotating frame nuclear Overhauser and exchange spectroscopy. Electrophoresis. ; 23(12): 1906-1911. doi: 10.1002/1522-2683(200206)23:121906::AID-ELPS1906>3.0.CO;2-#.
    • Chankvetadze B., Burjanadze N., Maynard D., Bergander K., Bergenthal D., Blaschke G. Comparative enantioseparations with native β-cyclodextrin and heptakis-(2-0-methyl-3,6-di-O-sulfo)-β-cyclodextrin in capillary electrophoresis. Electrophoresis. ; 23(17): 3027-3034. doi: 10.1002/1522-2683(200209)23:173027::AID-ELPS3027>3.0.CO;2-V.
    • Dreier T., Hannig F., Erker G., Bergander K., Fröhlich R. Conformational features of a furyl-substituted bis(tetrahydroindenyl)zirconium dichloride system. Journal of Physical Organic Chemistry. ; 15(8): 582-589. doi: 10.1002/poc.524.
    • Tamm M., Baum K., Lügger T., Fröhlich R., Bergander K. Chelate complexes of functionalized cycloheptatrienyl ligands: 17- And 18-Electron molybdenum complexes with linked cycloheptatrienyl-phosphane ligands and their use in transition metal catalysis. European Journal of Inorganic Chemistry. ; null(4): 918-928.

    • Von Wallbrunn C., Luftmann H., Bergander K., Meinhardt F. Phytotoxic chaetoglobosins are produced by the plant pathogen Calonectria morganii (anamorph Cylindrocladium scoparium). Journal of General and Applied Microbiology. ; 47(1): 33-38.
    • Dreir T., Bergander K., Wegelius E., Fröhlich R., Erker G. Structural and dynamic features of bis[2-(2-furyl)indenyl]zirconium derivatives. Organometallics. ; 20(24): 5067-5075. doi: 10.1021/om0104518.
    • Göttker-Schnetmann I., Aumann R., Bergander K. Organic synthesis via transition metal complexes. 112. Reactivity enhancement of group VI Fischer carbene complexes by copper and rhodium catalysts: Experimental proof of a carbene rhodium complex as an intermediate. Organometallics. ; 20(16): 3574-3581. doi: 10.1021/om0103207.
    • Chankvetadze B., Lomsadze K., Bergenthal D., Breitkreutz J., Bergander K., Blaschke G. Mechanistic study on the opposite migration order of clenbuterol enantiomers in capillary electrophoresis with β-cyclodextrin and single-isomer heptakis(2,3-diacetyl-6-sulfo)-β-cyclodextrin. Electrophoresis. ; 22(15): 3178-3184. doi: 10.1002/1522-2683(200109)22:153178::AID-ELPS3178>3.0.CO;2-F.
    • Lütke-Eversloh T., Bergander K., Luftmann H., Steinbüchel A. Identification of a new class of biopolymer: Bacterial synthesis of a sulfur-containing polymer with thioester linkages. Microbiology. ; 147(1): 11-19.
    • Lütke-Eversloh T., Bergander K., Luftmann H., Steinbüchel A. Biosynthesis of poly(3-hydroxybutyrate-co-3-mercaptobutyrate) as a sulfur analogue to poly(3-hydroxybutyrate) (PHB). Biomacromolecules. ; 2(3): 1061-1065. doi: 10.1021/bm015564p.

    • Chankvetadze B., Fillet M., Burjanadze N., Bergenthal D., Bergander C., Luftmann H., Crommen J., Blaschke G. Enantioseparation of aminoglutethimide with cyclodextrins incapillary electrophoresis and studies of selector-selectand interactions using NMR spectroscopy and electrospray ionization mass spectrometry. Enantiomer. ; 5(null): 313-322.
    • Chankvetadze B., Burjanadze N., Pintore G., Bergenthal D., Bergander K., Mühlenbrock C., Breitkreuz J., Blaschke G. Separation of brompheniramine enantiomers by capillary electrophoresis and study of chiral recognition mechanisms of cyclodextrins using NMR-spectroscopy, UV spectrometry, electrospray ionization mass spectrometry and X-ray crystallography. Journal of Chromatography A. ; 875(null): 471-484. doi: 10.1016/S0021-9673(00)00153-9.
    • Chankvetadze B., Pintore G., Burjanadze N., Bergenthal D., Bergander K., Breitkreuz J., Mühlenbrock C., Blaschke G. Mechanistic study of opposite migration order of dimethindene enantiomers in capillary electrophoresis in the presence of native β-cyclodextrin and heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin. Journal of Chromatography A. ; 875(null): 455-469. doi: 10.1016/S0021-9673(00)00146-1.
    • Dahlmann M., Erker G., Bergander K. Experimental characterization of the alkene-addition/-insertion energy profile at homogeneous group 4 metal ziegler-type catalysts. Journal of the American Chemical Society. ; 122(33): 7986-7998. doi: 10.1021/ja0005338.
    • Tamm M., Dressel B., Frohlich R., Bergander K. Complexes containing the heptadentate cogwheel C7Me7: Synthesis and structural characterization of heptamethylcycloheptatrienyl (CHT*) tungsten complexes. Chemical Communications. ; null(18): 1731-1732.
    • Fauré J., Erker G., Fröhlich R., Bergander K. 2-[ethyl-(2-methallyl)amino]indenyllithium: Structural characterization of a base-free oligomeric supersandwich indenyllithium compound. European Journal of Inorganic Chemistry. ; null(12): 2603-2606.

    • Strauch H., Bergander K., Kehr G., Fröhlich R., Erker G. Group 5 metal complexes with cyclooctatetraene: Formation and characterization of (butadiene)(cyclooctatetraene)(cyclopentadienyl)tantalum systems. European Journal of Inorganic Chemistry. ; null(9): 1461-1466.
    • Karl J., Dahlmann M., Erker G., Bergander K. Erratum: Arriving at an experimental estimate of the intrinsic activation barrier of olefin insertion into the Zr-C bond of an active metallocene Ziegler catalyst (Journal of the American Chemical Society (1998) 120 (5643-5652)). Journal of the American Chemical Society. ; 121(20): 4930. doi: 10.1021/ja995510b.
    • Wonnemann J., Oberhoff M., Erker G., Fröhlich R., Bergander K. Group-4 metallocene cation complexes of oligopeptides: Reaction of [Cp2ZrCH3(THF)+BPh4 -] with Boc-protected di- and tripepride esters. European Journal of Inorganic Chemistry. ; null(7): 1111-1120.
    • Gigante B., Santos C., Fonseca T., Curto M., Luftmann H., Bergander K., Berberan-Santos M. Diels-Alder adducts of C-60 and resin acid derivatives: Synthesis, electrochemical and fluorescence properties. Tetrahedron. ; 55(19): 6175-6182. doi: 10.1016/S0040-4020(99)00262-8.

    • Temme O., Dickner T., Laschat S., Fröhlich R., Kotila S., Bergander K. Synthesis of Azapolycyclic Systems Based on the Indolizino[3,4-b]quinoline Skeleton - A Diastereoselective Entry to Potential Oligodentate Artificial Receptors. European Journal of Organic Chemistry. ; null(4): 651-659.
    • Jacobsen H., Berke H., Brackemeyer T., Eisenblätter T., Erker G., Fröhlich R., Meyer O., Bergander K. Comparison of Characteristic Structural Features among the Triade of Tris(cyclopentadienyl)(Group-4 Metal) Complex Cations: A Combined Theoretical and Experimental Study. Helvetica Chimica Acta. ; 81(9): 1692-1709.
    • Döring S., Erker G., Fröhlich R., Meyer O., Bergander K. Reaction of the lewis acid tris(pentafluorophenyl)borane with a phosphorus ylide: Competition between adduct formation and electrophilic and nucleophilic aromatic substitution pathways. Organometallics. ; 17(11): 2183-2187.
    • Karl J., Dahlmann M., Erker G., Bergander K. Arriving at an experimental estimate of the intrinsic activation barrier of olefin insertion into the Zr-C bond of an active metallocene ziegler catalyst. Journal of the American Chemical Society. ; 120(23): 5643-5652. doi: 10.1021/ja9743809.

    • Monsees A., Laschat S., Hotfilder M., Wolff J., Bergander K., Terfloth L., Fröhlich R. Synthesis and in vitro cytotoxic activity of novel hexahydro-2H-pyrido[1,2-b]isoquinolines against human brain tumor cell lines. Bioorganic and Medicinal Chemistry Letters. ; 7(23): 2945-2950.

    • Bergander K., He R., Chandrakumar N., Eppers O., Günther H. NMR spectroscopy of organolithium compounds, Part XVI. The aggregation behavior of butyllithium, phenyllithium, and lithium diisopropylamide in dimethoxy- and diethoxymethane. Tetrahedron. ; 50(20): 5861-5868. doi: 10.1016/S0040-4020(01)90441-7.

    • Mons H., Bergander K., Günther H. The 2H,2H‐INADEQUATE experiment: Detection of One‐ and Two‐Spin Double Quantum Coherences. Helvetica Chimica Acta. ; 76(3): 1216-1218. doi: 10.1002/hlca.19930760308.
  • Karin Voß

    CTA
    © Karin Voß
    CTA
    Room 014, 015 (Iso-Trakt)
    Tel: +49 251 83 39773
    bussek@wwu.de

  • Ingo Gutowski

    Dipl. Ing. (FH)
    © Ingo Gutowski
    Dipl. Ing. (FH)
    Room 012, 013 (Iso-Trakt)
    Tel: +49 251 83 36509
    gutowski@wwu.de
  • Tobias Wagener

    wiss. Hilfskraft
    © T. Wagener
    wiss. Hilfskraft
    Tel: +49 251 83 33213
    tobias.wagener