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1

Unusual Formation of an Azaphospholene from 1,3,4,5-Tetramethylimidazol-2-ylidene and Di(isopropyl)aminophosphaalkyne

F. Ekkehardt Hahn, Duc Le Van, Michelle C. Moyes, Thorsten von Fehren, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie International Edition

Année:

2001

Langue:

english

Fichier:

PDF, 134 KB

english, 2001

2

Über Aromatenkomplexe von Metallen, XXIV. Über gemischte Tricarbonylkomplexe des Chroms, Molybdäns und Wolframs mit Benzol und seinen Derivaten

Ernst Otto Fischer, Karl Öfele, Hans Essler, Walter Fröhlich, Jens Peter Mortensen, Walter Semmlinger

Journal:

European Journal of Inorganic Chemistry

Année:

1958

Langue:

german

Fichier:

PDF, 622 KB

german, 1958

3

A Tetranuclear Hydroxo-Bridged Copper(II) Complex with PrimaryN-Acylamidines as Ligands: Preparation, Structural, and Magnetic Characterisation

Jan K. Eberhardt, Thorsten Glaser, Rolf-Dieter Hoffmann, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Inorganic Chemistry

Année:

2005

Langue:

english

Fichier:

PDF, 140 KB

english, 2005

4

Synthesis and Aggregation Properties of Two- and Three-Armed Nitrogen-Rich Chelate Ligands: Novel Bis(N-acylamidines), Tris(N-acylamidines) and Bis(triazapentadienes) with Flexible or Rigid Spacers

Juliana Isabel Clodt, Christof Wigbers, Ralph Reiermann, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2011

Langue:

english

Fichier:

PDF, 955 KB

english, 2011

5

Assessment of colony nests for laying hens in conjunction with the authorization procedure

Theres Buchwalder, Ernst Karl Fröhlich

Journal:

Applied Animal Behaviour Science

Année:

2011

Langue:

english

Fichier:

PDF, 322 KB

english, 2011

6

Synthesis and Application of Monodisperse Oligo(Oxyethylene)-Grafted Polystyrene Resins for Solid-Phase Organic Synthesis

Lumpi, Daniel, Braunshier, Christian, Horkel, Ernst, Hametner, Christian, Fröhlich, Johannes

Journal:

ACS Combinatorial Science

Année:

2014

Langue:

english

Fichier:

PDF, 2.45 MB

english, 2014

7

Modification of aviary design reduces incidence of falls, collisions and keel bone damage in laying hens

Stratmann, Ariane, Fröhlich, Ernst Konrad Friederich, Gebhardt-Henrich, Sabine Gabriele, Harlander-Matauschek, Alexandra, Würbel, Hanno, Toscano, Michael Jeffrey

Journal:

Applied Animal Behaviour Science

Année:

2015

Langue:

english

Fichier:

PDF, 1.21 MB

english, 2015

8

Electrophilic Reactivity of a 2-Azaallenium and of a 2-Azaallylium Ion

Guido M. Böttger, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2000

Langue:

english

Fichier:

PDF, 272 KB

english, 2000

9

1:1- and 2:1-Copper(II) Complexes From Primary N-Acylamidines

Jan K. Eberhardt, Roland Fröhlich, Sabine Venne-Dunker, Ernst-Ulrich Würthwein

Journal:

European Journal of Inorganic Chemistry

Année:

2000

Langue:

english

Fichier:

PDF, 344 KB

english, 2000

10

Polydonor-Substituted 1-Oxa- and 1-Thia-3,5-diazahexatrienes: Synthesis, Structures, Ring−Chain Tautomerism and Theoretical Calculations

Oliver Maier, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2001

Langue:

english

Fichier:

PDF, 488 KB

english, 2001

11

Electrocyclization Reactions of 1-Aza- and 1-Oxapentadienyl and -heptatrienyl Cations: Synthesis of Pyrrole and Furan Derivatives

Dirk Alickmann, Roland Fröhlich, Andreas H. Maulitz, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2002

Langue:

english

Fichier:

PDF, 558 KB

english, 2002

12

Ungewöhnliche Bildung eines Azaphospholens aus 1,3,4,5-Tetramethylimidazol-2-yliden und Diisopropylaminophosphaethin

F. Ekkehardt Hahn, Duc Le Van, Michelle C. Moyes, Thorsten von Fehren, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie

Année:

2001

Langue:

german

Fichier:

PDF, 117 KB

german, 2001

13

Eine vielseitige Aminobenzanellierungsmethode durch Deprotonierung von 2-(1-Alkinyl)benzaldiminen und ähnlichen 2-Aza-2,4-heptadienyl-6-inen: eine mehrstufige Umlagerungskaskade

Pramod Sagar, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie

Année:

2004

Langue:

german

Fichier:

PDF, 202 KB

german, 2004

14

A Versatile Aminobenzannulation Method Based on the Deprotonation of 2-(1-Alkynyl)benzaldimines and Similar 2-Aza-2,4-heptadienyl-6-ynes: A Multistep Rearrangement Cascade

Pramod Sagar, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie International Edition

Année:

2004

Langue:

english

Fichier:

PDF, 204 KB

english, 2004

15

Zur Komplexbildung des Cyclooctadiens-(1.5) mit Metall-hexacarbonylen

Ernst Otto Fischer, Walter Fröhlich

Journal:

European Journal of Inorganic Chemistry

Année:

1959

Langue:

german

Fichier:

PDF, 223 KB

german, 1959

16

Enantioselective Cathodic Reduction of 4-Methylcoumarin: Dependence of Selectivity on Reaction Conditions and Investigation of the Mechanism

Dr. Merete Folmer Nielsen, Dr. Belen Batanero, Dr. Thorsten Löhl, Dr. Hans J. Schäfer, Prof. Ernst-Ulrich Würthwein, Dr. Roland Fröhlich

Journal:

Chemistry - A European Journal

Année:

1997

Langue:

english

Fichier:

PDF, 1.47 MB

english, 1997

17

Mechanistic Study on Rearrangement Cascades Starting from Annulated 2-Aza-hepta-2,4-dienyl-6-ynyl Anions: Formation of Aniline and Azepine Derivatives

Volodymyr Lyaskovskyy, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

Chemistry - A European Journal

Année:

2007

Langue:

english

Fichier:

PDF, 205 KB

english, 2007

18

Tetraaryl Tetradecahydroporphyrazins: Novel Porphyrin Derivatives Featuring a Cyclic Benzene-Ring Tetramer

Simon Janich, Roland Fröhlich, Atsushi Wakamiya, Shigehiro Yamaguchi, Ernst-Ulrich Würthwein

Journal:

Chemistry - A European Journal

Année:

2009

Langue:

english

Fichier:

PDF, 543 KB

english, 2009

19

ChemInform Abstract: New Aspects of the Thio-Wittig Reaction

Gerhard Erker, Regina Hock, Stefanie Wilker, Christian Laurent, Carsten Puke, Ernst-Ulrich Wurthwein, Nicola C. Aust, Roland Frohlich

Journal:

Année:

2000

Fichier:

PDF, 24 KB

2000

20

1,3,5-Triazapentadienes as Chelating Ligands: 1,2,4-Triphenyl-1,3,5-triaza-pentadiene Complexes of Cobalt(II), Nickel(II), Palladium(II), Copper(II) and Zinc(II)

Nadine Heße, Roland Fröhlich, Ionel Humelnicu, Ernst-Ulrich Würthwein

Journal:

European Journal of Inorganic Chemistry

Année:

2005

Langue:

english

Fichier:

PDF, 191 KB

english, 2005

21

Synthesis of Secondary, Tertiary and Quaternary 1,3,5-Triazapenta-1,3-dienes and Their CoII, ZnII, PdII, CuII and BF2 Coordination Compounds

Ina Häger, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Inorganic Chemistry

Année:

2009

Langue:

english

Fichier:

PDF, 1.02 MB

english, 2009

22

Metallomacrocyclic Complexes by Self-Assembly of NiII and CuII Ions and Chelating Bis(N-acylamidines)

Juliana Isabel Clodt, Roland Fröhlich, Matthias Eul, Ernst-Ulrich Würthwein

Journal:

European Journal of Inorganic Chemistry

Année:

2012

Langue:

english

Fichier:

PDF, 1007 KB

english, 2012

23

Polyamino-Substituted 1-Oxa-3,5-diazahexatrienes and 1-Oxa-3,5,7-triazaoctatetraenes (N-Acyl-oligocyanamides): Synthesis, Structures, Cyclovoltammetry and NLO Properties − Experiment and Theory

Christian Möllers, Jörg Prigge, Birgit Wibbeling, Roland Fröhlich, Andreas Brockmeyer, Hans J. Schäfer, Elmar Schmälzlin, Christoph Bräuchle, Klaus Meerholz, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2003

Langue:

english

Fichier:

PDF, 225 KB

english, 2003

24

4H-Imidazoles and Imidazoles from Anionic and Dipolar Electrocyclization Reactions of 2,4-Diazapenta-1,3-dienes

Nils Habersaat, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2004

Langue:

english

Fichier:

PDF, 317 KB

english, 2004

25

4,5-Dihydro-3H-benzo[c]azepines from 1,7-Electrocyclization Reactions of 2-Aza-4,5-benzoheptatrienyllithium Compounds

Klaus Gerdes, Pramod Sagar, Roland Fröhlich, Birgit Wibbeling, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2004

Langue:

english

Fichier:

PDF, 262 KB

english, 2004

26

Pyridine-Based Oligonitriles as Pincer Ligands for Palladium(II), Copper(II), Cobalt(II), and Nickel(II) Ions

Henrik Behrens, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2005

Langue:

english

Fichier:

PDF, 215 KB

english, 2005

27

1,3,5-Triazapenta-1,3-dienes: Useful Building Blocks for the Synthesis of1,2-Dihydro-1,3,5-triazines and Oligonitriles

Nadine Heße, Roland Fröhlich, Birgit Wibbeling, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2006

Langue:

english

Fichier:

PDF, 374 KB

english, 2006

28

Substituted 3-Hydroxypyrroles from 1-Azapenta-1,4-dien-3-ones:The Aza-Nazarov Reaction – Synthesis and Quantum Chemical Calculations

Jürgen Dieker, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2006

Langue:

english

Fichier:

PDF, 365 KB

english, 2006

29

(5-Imino-4,5-dihydro-3H-pyrrol-2-yl)amines as Sterically Restrained 1,3,5-Triazapenta-1,3-dienes: Useful Building Blocks for the Synthesis of Oligonitriles

Edgar A. Marihart, Jan-Bernd Greving, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2007

Langue:

english

Fichier:

PDF, 319 KB

english, 2007

30

2H-Pyrrole Derivatives from an Aza-Nazarov Reaction Cascade Involving Indole as the Neutral Leaving Group

Nugzar Ghavtadze, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2008

Langue:

english

Fichier:

PDF, 237 KB

english, 2008

31

Multivalent 1-Oxa-3,5,7-triazahepta-1,3,5-trienes: Synthesis, Structural Properties and Metal Coordination

Jan-Bernd Greving, Henrik Behrens, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2008

Langue:

english

Fichier:

PDF, 945 KB

english, 2008

32

Cyclization Reactions of 1-Amino-5-trifluoromethyl-5-thienyl-1-azapenta-1,4-dien-3-ones under Superelectrophilic Conditions: Synthesis of Novel Benzothiophenols, Cyclopentenols and Dihydrodiazepinols

Nugzar Ghavtadze, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2009

Langue:

english

Fichier:

PDF, 428 KB

english, 2009

33

1,7-Electrocyclization Reactions of 2-Aza-4,5-benzoheptatrienyl- and 4-Aza-6,7-benzononatetraenyllithium Compounds: Synthesis of Novel 2-Benzazepines and (Benzocyclooctenyl)amines

Melanie Sajitz, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2009

Langue:

english

Fichier:

PDF, 411 KB

english, 2009

34

3,4-Dihydro-3H-pyrrol-2-imines as Conformationally Restrained 1,3-Diazabutadienes: Synthesis, Structural Properties and Protonation

Simon Janich, Roland Fröhlich, Andrea Wilken, Jan von Zamory, Atsushi Wakamiya, Shigehiro Yamaguchi, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2009

Langue:

english

Fichier:

PDF, 669 KB

english, 2009

35

Diastereo- and Enantioselective Synthesis of Functionalized β-Lactams from Oxiranecarbaldimines and Lithium Ester Enolates

Kristin Michel, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2009

Langue:

english

Fichier:

PDF, 341 KB

english, 2009

36

Indole as Neutral Leaving Group in Silver Nitrate Induced Cyclization Reactions of N-{2-[Alkynyl(hetero)aryl]methylene}indolin-1-amines for the Synthesis of Annulated Pyridine Derivatives

Nugzar Ghavtadze, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2010

Langue:

english

Fichier:

PDF, 326 KB

english, 2010

37

Synthesis, Structures, and Aggregation Properties of N-Acylamidines

Christof Wigbers, Jörg Prigge, Zhongchen Mu, Roland Fröhlich, Lifeng Chi, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2011

Langue:

english

Fichier:

PDF, 1.12 MB

english, 2011

38

[1,4]Dithiepino[2,3-b]furans from Oxiranecarbaldimines and Lithiated 1,3-Dithiane: A Series of Rearrangement Reactions in One Pot

Kristin Michel, Christoph Glotzbach, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

2012

Langue:

english

Fichier:

PDF, 498 KB

english, 2012

39

Improved in vivo gene transfer into tumor tissue by stabilization of pseudodendritic oligoethylenimine-based polyplexes

Verena Russ, Thomas Fröhlich, Yunqiu Li, Anna Halama, Manfred Ogris, Ernst Wagner

Journal:

The Journal of Gene Medicine

Année:

2010

Langue:

english

Fichier:

PDF, 4.93 MB

english, 2010

40

Unsaturated Hetero Chains, V Synthesis, Structure, and Reactivity of Alkoxy-substituted 2,4-diazapentadienylium-, 2,4,6-Triazaheptatrienylium-, and 2,4,6,8-Tetraazanonatetraenylium Salts

Norbert Schulte, Roland Fröhlich, Jürgen Hecht, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

1996

Langue:

english

Fichier:

PDF, 1.12 MB

english, 1996

41

Unsaturated Hetero Chains, VI. ω-alkoxy- and ω-Amino-Substituted Oligonitriles – Synthesis, Structures, and Reactivity

Nicola C. Aust, Roland Fröhlich, Jürgen Hecht, Ernst-Ulrich Würthwein

Journal:

European Journal of Organic Chemistry

Année:

1997

Langue:

english

Fichier:

PDF, 1.15 MB

english, 1997

42

Dynamic patterns of USPIO enhancement can be observed in macrophages after ischemic brain damage

Martin Rausch, Andre Sauter, Johannes Fröhlich, Ute Neubacher, Ernst W. Radü, Markus Rudin

Journal:

Magnetic Resonance in Medicine

Année:

2001

Langue:

english

Fichier:

PDF, 460 KB

english, 2001

43

Metallated ketenimines: Deprotonation of N-isopropyl-diphenylketenimine and subsequent trapping reactions with electrophiles A theoretical and experimental study

Rolf Gertzmann, Manfred H. Möller, Ute Rodewald, Roland Fröhlich, Mathias Grehl, Ernst-Ulrich Würthwein

Journal:

Année:

1995

Langue:

english

Fichier:

PDF, 1.30 MB

english, 1995

44

Metallated ketenimines: Quinazoline derivatives from base induced dimerization of N-phenyldiethylketenimine. an experimental and theoretical study

Rolf Gertzmann, Roland Fröhlich, Mathias Grehl, Ernst-Ulrich Würthwein

Journal:

Année:

1995

Langue:

english

Fichier:

PDF, 881 KB

english, 1995

45

1,7-Electrocyclisation reactions of 2-azaheptatrienyl lithium compounds: Synthesis of 1-acyl-2,3-dihydroazepines

Stephanie Klötgen, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

Année:

1996

Langue:

english

Fichier:

PDF, 548 KB

english, 1996

46

Convenient multigram synthesis of monodisperse oligo(ethylene glycols): effective reaction monitoring by infrared spectroscopy using an attenuated total reflection fibre optic probe

Daniel Lumpi, Christian Braunshier, Christian Hametner, Ernst Horkel, Bernhard Zachhuber, Bernhard Lendl, Johannes Fröhlich

Journal:

Tetrahedron Letters

Année:

2009

Langue:

english

Fichier:

PDF, 189 KB

english, 2009

47

Unsaturated hetero chains -VII. The synthesis of 1-thioacyl-oligonitriles

Anke Beckmann, Roland Fröhlich, Ernst-Ulrich Würthwein

Journal:

Tetrahedron Letters

Année:

1997

Langue:

english

Fichier:

PDF, 190 KB

english, 1997

48

Vergiftungen

W. Raetz, Ö. Fischer, Ernst Scharrer, Lendle, Sagel, H. A. Oelkers, H. Staub, A. Fröhlich, Jagdhold, Badt, Wilcke, H. Vollmer, Kochmann, Mrugowsky, Kornfeld, Weber, Panse, Ehrismann, Collier

Journal:

International Journal of Legal Medicine

Année:

1933

Langue:

german

Fichier:

PDF, 889 KB

german, 1933

49

Vergiftungen

Wilcke, Weimann, Forster, A. Lorenz, Schönberg, Ott, Ullmann, v. Neureiter, Schrader, Johan Almkvist, Kalmus, Binz, A. Fröhlich, Rosenthal-Deussen, Behrens, Schwarz, Fr. Wohlwill, Ernst Neubauer, Geor

Journal:

International Journal of Legal Medicine

Année:

1930

Langue:

german

Fichier:

PDF, 1.83 MB

german, 1930

50

Über Veränderung der Wirkung von Herzgiften durch Physostigmin.

Alfred Fröhlich, Ernst P. Pick

Journal:

Research in Experimental Medicine

Année:

1920

Langue:

german

Fichier:

PDF, 2.40 MB

german, 1920