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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

Year:

2001

Language:

english

File:

PDF, 134 KB

english, 2001

2

Book Review: The Organic Chemistry of Aliphatic Nitrogen Compounds. (International Series of Monographs on Chemistry, Vol. 28.) By B. R. Brown

Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie International Edition

Year:

1995

Language:

english

File:

PDF, 295 KB

english, 1995

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

Year:

2005

Language:

english

File:

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

Year:

2011

Language:

english

File:

PDF, 955 KB

english, 2011

5

Exploitation of an additional hydrophobic pocket of σ1 receptors: Late-stage diverse modifications of spirocyclic thiophenes by C–H bond functionalization

Meyer, Christina, Neue, Benedikt, Schepmann, Dirk, Yanagisawa, Shuichi, Yamaguchi, Junichiro, Würthwein, Ernst-Ulrich, Itami, Kenichiro, Wünsch, Bernhard

Journal:

Organic & Biomolecular Chemistry

Year:

2011

Language:

english

File:

PDF, 460 KB

english, 2011

6

Activation of Isocyanates and Carbon Dioxide by a Monomeric Aluminium Hydrazide as an Active Lewis Pair

Hengesbach, Frank, Jin, Xing, Hepp, Alexander, Wibbeling, Birgit, Würthwein, Ernst-Ulrich, Uhl, Werner

Journal:

Chemistry - A European Journal

Year:

2013

Language:

english

File:

PDF, 345 KB

english, 2013

7

σ-Bond Activation in Aluminium-Functionalized Alkynylchlorogermanes: Facile Insertion of Isocyanate and Azide into Al-C and Ge-Cl Bonds

Uhl, Werner, Honacker, Christian, Hepp, Alexander, Layh, Marcus, Würthwein, Ernst-Ulrich

Journal:

European Journal of Inorganic Chemistry

Year:

2016

Language:

english

File:

PDF, 1.06 MB

english, 2016

8

Transition-Metal-Free Ring Opening Silylation of Indoles and Benzofurans with (Diphenyl-tert-butylsilyl)lithium

Xu, Pan, Würthwein, Ernst-Ulrich, Daniliuc, Constantin Gabriel, Studer, Armido

Journal:

Angewandte Chemie International Edition

Year:

2017

Language:

english

File:

PDF, 1.18 MB

english, 2017

9

Silicon-Halogen Bond Activation in Mixed Si/Al Compounds and an Approach to Intramolecular Stabilized Silylium Ions

Uhl, Werner, Tolzmann, Michael, Willeke, Kira, Honacker, Christian, Hepp, Alexander, Layh, Marcus, Würthwein, Ernst-Ulrich

Journal:

European Journal of Inorganic Chemistry

Year:

2018

Language:

english

File:

PDF, 2.09 MB

english, 2018

10

First Metal Complexes of Oligonitrile Ligands: Palladium(II) Complexes of N-Methoxycarbonyl- and N-Thiobenzoyl-1,3,5,7-tetraazaoctatetraenes

Nicola C. Aust, Anke Beckmann, Ria Deters, Roland Krämer, Lothar Terfloth, Sabine Warzeska, Ernst-Ulrich Würthwein

Journal:

European Journal of Inorganic Chemistry

Year:

1999

Language:

english

File:

PDF, 234 KB

english, 1999

11

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

Year:

2000

Language:

english

File:

PDF, 272 KB

english, 2000

12

Enantioselective Deprotonation of Alkyl Carbamates by Means of (R,R)-1,2-Bis(N,N-dimethylamino)cyclohexane/sec-Butyllithium— Theory and Experiment

Ernst-Ulrich Würthwein, Karin Behrens, Dieter Hoppe

Journal:

Chemistry - A European Journal

Year:

1999

Language:

english

File:

PDF, 133 KB

english, 1999

13

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

Year:

2000

Language:

english

File:

PDF, 344 KB

english, 2000

14

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

Year:

2001

Language:

english

File:

PDF, 488 KB

english, 2001

15

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

Year:

2002

Language:

english

File:

PDF, 558 KB

english, 2002

16

exo/endo Preferences of Double Bonds in Three-Membered Ring Compounds − The Bias Toward Endocyclic Unsaturation in 3-Alkyl- and 3-Amino-2H-azirines: A Theoretical and Experimental Study

Ernst-Ulrich Würthwein, Thomas Hergenröther, Helmut Quast

Journal:

European Journal of Organic Chemistry

Year:

2002

Language:

english

File:

PDF, 129 KB

english, 2002

17

exo/endo Preferences of Double Bonds in Three-Membered Ring Compounds − The Bias Toward Endocyclic Unsaturation in 3-Alkyl- and 3-Amino-2H-azirines: A Theoretical and Experimental Study

Ernst-Ulrich Würthwein, Thomas Hergenröther, Helmut Quast

Journal:

European Journal of Organic Chemistry

Year:

2002

Language:

english

File:

PDF, 36 KB

english, 2002

18

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

Year:

2001

Language:

german

File:

PDF, 117 KB

german, 2001

19

Trimethylsilyl- and Trimethylstannyldimethylphosphane—Convenient and Versatile Reagents for the Synthesis of Polyfluoroaryldimethylphosphanes

Leonid I. Goryunov, Joseph Grobe, Vitalij D. Shteingarts, Bernt Krebs, Arno Lindemann, Ernst-Ulrich Würthwein, Christian Mück-Lichtenfeld

Journal:

Chemistry - A European Journal

Year:

2000

Language:

english

File:

PDF, 228 KB

english, 2000

20

Synthese von Alkylidenmalondialdehyd-tetramethylbisacetalen

Prof. Dr. Christian Reichardt, Dr. Wilfried Preßler, Dr. Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie

Year:

1976

Language:

german

File:

PDF, 230 KB

german, 1976

21

Planar tetrakoordiniertes Silicium

Dr. Ernst-Ulrich Würthwein, Prof. Dr. Paul von Ragué Schleyer

Journal:

Angewandte Chemie

Year:

1979

Language:

german

File:

PDF, 257 KB

german, 1979

22

Phenylsubstituierte Dimethylenammonium-Salze: Derivate des 2-Aza-alleniums

Dr. Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie

Year:

1981

Language:

german

File:

PDF, 239 KB

german, 1981

23

Reaktionen von N-Methylencarbonsäureamiden mit Elektrophilen: 1-Alkoxy-2-aza-allenium-Salze und N-Acyl(methylen)ammonium-Salze

Dr. Ernst-Ulrich Würthwein, Rainer Kupfer, Claus Kaliba

Journal:

Angewandte Chemie

Year:

1983

Language:

german

File:

PDF, 227 KB

german, 1983

24

Ein neuer, einfacher Weg zu 2-Aza-allenium-Salzen – Bis(2-adamantyliden)ammonium- hexachloroantimonat

Dr. Ernst-Ulrich Würthwein, R. Kupfer, Dr. Peter H. M. Budzelaar, C. Strobel, Prof. Dr. H. P. Beck

Journal:

Angewandte Chemie

Year:

1985

Language:

german

File:

PDF, 231 KB

german, 1985

25

Erste Synthese von N-Methylen-inaminen (2-Aza-but-1-en-3-inen)

Prof. Dr. Ernst-Ulrich Würthwein, Reinhard Weigmann

Journal:

Angewandte Chemie

Year:

1987

Language:

german

File:

PDF, 239 KB

german, 1987

26

Tetraferrioazaallenium — Produkt einer neuartigen Reaktion von koordiniertem CN−

Prof. Dr. Wolf Peter Fehlhammer, Dr. Andreas Schröder, Prof. Dr. Joachim Fuchs, Prof. Dr. Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie

Year:

1992

Language:

german

File:

PDF, 430 KB

german, 1992

27

The Chemistry of Amidines and Imidates, Vol. 2. (Reihe: The Chemistry of functional groups; Reihenherausgeber: S. Patai.) Herausgegeben von S. Patai und Z. Rappoport. Wiley, Chichester, 1991. XIV, 918 S., geb. £ 225.00. — ISBN 0-471-92457-1

Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie

Year:

1992

Language:

german

File:

PDF, 287 KB

german, 1992

28

Ein 1-Oxa-3,5,7,9-tetraazadecapentaen, ein Modell-Oligonitril mit Helixstruktur im kristallinen Zustand

Dr. Martin Buhmann, Dr. Manfred H. Möller, Ute Rodewald, Prof. Dr. Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie

Year:

1994

File:

PDF, 544 KB

1994

29

The organic chemistry of aliphatic nitrogen compounds. (Reihe: International Series of Monographs on Chemistry, Vol. 28). Von B. R. Brown. Clarendon Press, Oxford, 1994. 767 S., geb. 145.00 £. – ISBN 0-19-855783-3

Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie

Year:

1995

Language:

german

File:

PDF, 172 KB

german, 1995

30

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

Year:

2004

Language:

german

File:

PDF, 202 KB

german, 2004

31

Synthesis of Alkylidenemalondialdehyde Tetramethyl Bisacetals

Prof. Dr. Christian Reichardt, Dr. Wilfried Pressler, Dr. Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie International Edition

Year:

1976

Language:

english

File:

PDF, 244 KB

english, 1976

32

Planar Tetracoordinate Silicon

Dr. Ernst-Ulrich Würthwein, Prof. Dr. Paul von Ragué Schleyer

Journal:

Angewandte Chemie International Edition

Year:

1979

Language:

english

File:

PDF, 239 KB

english, 1979

33

Phenyl-Substituted Dimethyleneammonium Salts: 2-Aza-allenium Derivatives

Dr. Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie International Edition

Year:

1981

Language:

english

File:

PDF, 254 KB

english, 1981

34

Reactions of N-Methylenecarboxamides with Electrophiles: 1-Alkoxy-2-azaallenium Salts and N-Acyl(methylene)ammonium Salts

Dr. Ernst-Ulrich Würthwein, Rainer Kupfer, Claus Kaliba

Journal:

Angewandte Chemie International Edition

Year:

1983

Language:

english

File:

PDF, 226 KB

english, 1983

35

Reaktionen von N-Methylencarbonsäureamiden mit Elektrophilen: 1-Alkoxy-2-aza-allenium-Salze und N-Acyl(methylen)ammonium-Salze

Dr. Ernst-Ulrich Würthwein, cand. Chem. Rainer Kupfer, cand. chem. Claus Kaliba

Journal:

Angewandte Chemie International Edition

Year:

1983

File:

PDF, 263 KB

1983

36

A New, Facile Route to 2-Azaallenium Salts—Bis(2-adamantylidene)ammonium Hexachloroantimonate

Priv.-Doz. Dr. Ernst-Ulrich Würthwein, Dipl.-Chem. Rainer Kupfer, Dr. Peter H. M. Budzelaar, Dipl.-Chem. Cornelia Strobel, Prof. Dr. Horst P. Beck

Journal:

Angewandte Chemie International Edition

Year:

1985

Language:

english

File:

PDF, 288 KB

english, 1985

37

First Synthesis of N-Methylene-Ynamines (2-Azabut-1-en-3-ynes)

Prof. Dr. Ernst-Ulrich Würthwein, Dipl.-Chem. Reinhard Weigmann

Journal:

Angewandte Chemie International Edition

Year:

1987

Language:

english

File:

PDF, 247 KB

english, 1987

38

Tetraferrioazaallenium—Product of a Novel Reaction of Coordinated CN−

Prof. Dr. Wolf Peter Fehlhammer, Dr. Andreas Schröder, Prof. Dr. Joachim Fuchs, Prof. Dr. Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie International Edition

Year:

1992

Language:

english

File:

PDF, 437 KB

english, 1992

39

Book Review: The Chemistry of Amidines and Imidates. Vol. 2. (Series: The Chemistry of Functional Groups; series editor: S. Patai). Edited by S. Patai and Z. Rappoport

Ernst-Ulrich Würthwein

Journal:

Angewandte Chemie International Edition

Year:

1992

Language:

english

File:

PDF, 156 KB

english, 1992

40

1-Oxa-3,5,7,9-tetraazadecapentaene, a Model Oligonitrile with a Helical Structure in the Crystalline State

Dr. Martin Buhmann, Prof. Dr. Ernst-Ulrich Würthwein, Dr. Manfred H. Möller, Dipl.-Ing. Ute Rodewald

Journal:

Angewandte Chemie International Edition

Year:

1994

Language:

english

File:

PDF, 373 KB

english, 1994

41

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

Year:

2004

Language:

english

File:

PDF, 204 KB

english, 2004

42

Notiz über eine einfache Synthese des tert-Butylmalondialdehyds

Christian Reichardt, Ernst-Ulrich Würthwein

Journal:

European Journal of Inorganic Chemistry

Year:

1974

Language:

german

File:

PDF, 188 KB

german, 1974

43

Notiz zum Mechanismus der Japp-Klingemann-Reaktion von 1,3-Dialdehyden

Christian Reichardt, Ernst-Ulrich Würthwein

Journal:

European Journal of Inorganic Chemistry

Year:

1976

Language:

german

File:

PDF, 160 KB

german, 1976

44

Massenspektrometrische Untersuchung von Stickstoff-Verbindungen, XXXV. Phenylsubstituierte 2-Azaallenium-Ionen in der Gasphase

Ernst-Ulrich Würthwein, Herman Halim, Helmut Schwarz, Nico M. M. Nibbering

Journal:

European Journal of Inorganic Chemistry

Year:

1982

File:

PDF, 469 KB

1982

45

A Fourier Transform Ion Cyclotron Resonance Study of the Structure of some Phenyl-substituted 2-Azaallenium Ions

Jan C. Kleingeld, Nico M. M. Nibbering, Herman Halim, Helmut Schwarz, Ernst-Ulrich Würthwein

Journal:

European Journal of Inorganic Chemistry

Year:

1983

Language:

english

File:

PDF, 381 KB

english, 1983

46

Zur Struktur von N-Methylencarbonsäureamiden: Röntgenstrukturergebnisse, spektroskopische Untersuchung und quantenmechanische Berechnungen

Rudolf Allmann, Rainer Kupfer, Michael Nagel, Ernst-Ulrich Würthwein

Journal:

European Journal of Inorganic Chemistry

Year:

1984

File:

PDF, 488 KB

1984

47

The Structure of 2-Azaallenium Cations

Mahmoud Al-Talib, Ibrahim Jibril, Ernst-Ulrich Würthwein, Johannes C. Jochims, Gottfried Huttner

Journal:

European Journal of Inorganic Chemistry

Year:

1984

Language:

english

File:

PDF, 457 KB

english, 1984

48

1-Alkoxy-2-azaallenium-Salze: Röntgenographische und quantenmechanische Strukturuntersuchungen

Rainer Kupfer, Ernst-Ulrich Würthwein, Michael Nagel, Rudolf Allmann

Journal:

European Journal of Inorganic Chemistry

Year:

1985

File:

PDF, 577 KB

1985

49

Synthese und Struktur von N-Acylimidsäureestern

Rainer Kupfer, Michael Nagel, Ernst-Ulrich Würthwein, Rudolf Allmann

Journal:

European Journal of Inorganic Chemistry

Year:

1985

File:

PDF, 959 KB

1985

50

Strukturuntersuchungen zum System 1,3-Dialkoxy-2-aza-allenium-Ionen/1,3-Dialkoxy-2-aza-allyl-Kationen

Ernst-Ulrich Würthwein, Rainer Kupfer, Rudolf Allmann, Michael Nagel

Journal:

European Journal of Inorganic Chemistry

Year:

1985

File:

PDF, 635 KB

1985