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1

Backbone modification of Chirasil-Val I. Effect of loading on the separation of enantiomers by gas chromatography

Bernhard Koppenhoefer, Ulrich Mühleck, Konrad Lohmiller

Journal:

Journal of Chromatography A

Year:

1995

Language:

english

File:

PDF, 451 KB

english, 1995

2

Separation of enantiomers of drugs by capillary electrophoresis: V. Hydroxypropyl-α-cyclodextrin as chiral solvating agent

Bernhard Koppenhoefer, Ulrich Epperlein, Rainer Schlunk, Xiaofeng Zhu, Bingcheng Lin

Journal:

Journal of Chromatography A

Year:

1998

Language:

english

File:

PDF, 578 KB

english, 1998

3

Asymmetric sharpless epoxidation of divinylcarbinol. Erythro-D- and -L-4-pentenitols by hydrolysis of regioisomeric epoxy-4-pentenols

Volker Jäger, Detlef Schröter, Bernhard Koppenhoefer

Journal:

Year:

1991

Language:

english

File:

PDF, 1.19 MB

english, 1991

4

Separation of Enantiomers of Drugs by Capillary Electrophoresis, Part 6. Hydroxypropyl-β-cyclodextrin as Chiral Solvating Agent

Lin Bingcheng, Zhu Xiaofeng, Ulrich Epperlein, Marc Schwierskott, Rainer Schlunk, Bernhard Koppenhoefer

Journal:

Journal of Separation Science

Year:

1998

Language:

english

File:

PDF, 137 KB

english, 1998

5

Encyclopedia of Reagents for Organic Synthesis || Propylene Oxide

Koppenhoefer, Bernhard

Year:

2001

Language:

english

File:

PDF, 190 KB

english, 2001

6

Optimization and Parameter Study for Chiral Separation by Capillary Electrophoresis

Xiaofeng Zhu, Bingcheng Lin, Andreas Jakob, Ulrich Epperlein, Bernhard Koppenhoefer

Journal:

Journal of Separation Science

Year:

1999

Language:

english

File:

PDF, 85 KB

english, 1999

7

Chemical Shift Nonequivalence of Enantiomers of Amino Acid Derivatives in 1H NMR and 19F NMR Spectroscopy Induced by L-Chirasil- Val.

Koppenhoefer, Bernhard, Hummel, Michael

Journal:

Zeitschrift für Naturforschung B

Year:

1992

Language:

english

File:

PDF, 286 KB

english, 1992

8

Study of enantioselective interactions between chiral drugs and serum albumin by capillary electrophoresis

Xiaofeng Zhu, Yongsheng Ding, Bingcheng Lin, Andreas Jakob, Bernhard Koppenhoefer

Journal:

ELECTROPHORESIS

Year:

1999

Language:

english

File:

PDF, 179 KB

english, 1999

9

Separation of Enantiomers of Drugs by Capillary Electrophoresis with Permethyl-gamma-Cyclodextrin as Chiral Solvating Agent

Bernhard Koppenhoefer, Andreas Jakob, Xiaofeng Zhu, Bingcheng Lin

Journal:

Journal of Separation Science

Year:

2000

Language:

english

File:

PDF, 376 KB

english, 2000

10

Quantitative Trennung der Enantiomerenpaare des Pheromons 2-Ethyl-1,6-dioxaspiro[4,4]nonan durch Komplexierungschromatographie an einem optisch aktiven Metallkomplex

Bernhard Koppenhoefer, Klaus Hintzer, Roland Weber, Prof. Dr. Volker Schurig

Journal:

Angewandte Chemie

Year:

1980

Language:

german

File:

PDF, 239 KB

german, 1980

11

Separation of enantiomers of drugs by capillary electrophoresis. Part 4: Hydroxyprpyl-gammacyclodextrin as chiral solvating agent

Priv.-Doz. Dr. Bernhard Koppenhoefer, Ulrich Epperlein, Zhu Xiaofeng, Lin Bingcheng

Journal:

ELECTROPHORESIS

Year:

1997

Language:

english

File:

PDF, 538 KB

english, 1997

12

Correction. Overtake Phenomena in the Movement Process of Components under Temperature Programmming Gas Chromatography

Bingcheng, Lin., Bingchang, Lin., Koppenhoefer, Bernhard.

Journal:

Analytical Chemistry

Year:

1989

Language:

english

File:

PDF, 51 KB

english, 1989

13

Separation of drugs by capillary electrophoresis, Part 10. Permethyl-alpha-cyclodextrin as chiral solvating agent

Xiaofeng Zhu, Bingcheng Lin, Andreas Jakob, Stefan Wuerthner, Bernhard Koppenhoefer

Journal:

ELECTROPHORESIS

Year:

1999

Language:

english

File:

PDF, 486 KB

english, 1999

14

Mikrobiologische Bildung von 2-(4-Bromphenyl)-2-ethoxyoxiran und Kristallstrukturanalyse des Dimerisierungsprodukts meso-2,5-Bis(4-bromphenyl)-2,5-diethoxy-1,4-dioxan

Bernhard Koppenhoefer, Werner Winter, Ernst Bayer

Journal:

European Journal of Organic Chemistry

Year:

1983

File:

PDF, 472 KB

1983

15

CHIRBASE, a molecular database for the separation of enantiomers by chromatography

Bernhard Koppenhoefer, Rudolph Graf, Helga Holzschuh, Andreas Nothdurft, Ulrich Trettin, Patrick Piras, Christian Roussel

Journal:

Journal of Chromatography A

Year:

1994

Language:

english

File:

PDF, 556 KB

english, 1994

16

Separation of enantiomers of drugs by capillary electrophoresis, part 7: Gamma-cyclodextrin as chiral solvating agent

Bernhard Koppenhoefer, Ulrich Epperlein, Andreas Jakob, Stefan Wuerthner, Zhu Xiaofeng, Lin Bingcheng

Journal:

Year:

1998

Language:

english

File:

PDF, 184 KB

english, 1998

17

CHIRBASE, a graphical molecular database on the separation of enantiomers by liquid-, supercritical fluid-, and gas chromatography

Bernhard Koppenhoefer, Andreas Nothdurft, Joanna Pierrot-Sanders, Patrick Piras, Cristina Popescu, Christian Roussel, Matthias Stiebler, Ulrich Trettin

Journal:

Year:

1993

Language:

english

File:

PDF, 595 KB

english, 1993

18

Multi-Scanning Chromatographie (MSC), ein neues Prinzip zur Verbesserung des Signal/Rausch-Verhältnisses, Anwendung in der Bestimmung extrem hoher Enantiomerenreinheiten

Bernhard Koppenhoefer

Journal:

Analytical and Bioanalytical Chemistry

Year:

1985

Language:

german

File:

PDF, 230 KB

german, 1985

19

Highly Regioselective Bromination of [3a R -(3aα,4β,7β,7aα)]-Hexahydro-7,8,8- trimethyl-4,7-methanobenzofuran-2(3 H )-one via Nonclassical Bornyl Cations

Koppenhoefer, Bernhard, Schwierskott, Marc, Brendle, Hans-Georg, Noe, Christian R., Jangg, Edith, Völlenkle, Horst

Journal:

Journal of Organic Chemistry

Year:

1996

Language:

english

File:

PDF, 169 KB

english, 1996

20

Resolution of stereoisomers of dipeptides by gas chromatography on chirasil-val

Bernhard Koppenhoefer, Hans Allmendinger, Pei Chang Lu, Bing Cheng Lin

Journal:

Journal of Chromatography A

Year:

1988

Language:

english

File:

PDF, 652 KB

english, 1988

21

Direct resolution of enantiomers of basic imidazol-2-yl-substituted alcohols by gas chromatography on chirasil-val

Dr. John M. Briody, David Keenan, Graeme J. Nicholson, Bernhard Koppenhoefer

Journal:

Year:

1993

Language:

english

File:

PDF, 233 KB

english, 1993

22

Transient state of chiral recognition in a binary mixture of cyclodextrins in capillary electrophoresis

Xiaofeng Zhu, Yongsheng Ding, Bingcheng Lin, Andreas Jakob, Bernhard Koppenhoefer

Journal:

Journal of Chromatography A

Year:

2000

Language:

english

File:

PDF, 776 KB

english, 2000

23

Quantitative Separation of the Enantiomeric Pairs of the Pheromone 2-Ethyl-1,6-dioxaspiro[4.4]nonane by Complexation Chromatography on an Optically Active Metal Complex

Dipl.-Chem. Bernhard Koppenhoefer, Dipl.-Chem. Klaus Hintzer, Dipl.-Chem. Roland Weber, Prof. Dr. Volker Schurig

Journal:

Angewandte Chemie International Edition

Year:

1980

Language:

english

File:

PDF, 225 KB

english, 1980

24

Direct resolution of enantiomers of 2- and 3-hydroxy acid alkyl esters by fused-silica capillary gas chromatography

Bernhard Koppenhoefer, Hans Allmendinger, Graeme J. Nicholson, Ernst Bayer

Journal:

Journal of Chromatography A

Year:

1983

Language:

english

File:

PDF, 714 KB

english, 1983

25

Modifizierung von Kieselgel mit Weinsäurederivaten hoher Stereoisomerenreinheit und Charakterisierung durch Festkörper-13C-NMR-CP-MAS-Spektroskopie

Bernhard Koppenhoefer, Hans Allmendinger, Bernadette Peters

Journal:

European Journal of Organic Chemistry

Year:

1987

File:

PDF, 551 KB

1987

26

Overtake phenomena in the movement process of components under temperature programming gas chromatography

Lin, Bingcheng., Lin, Binchang., Koppenhoefer, Bernhard.

Journal:

Analytical Chemistry

Year:

1988

Language:

english

File:

PDF, 356 KB

english, 1988

27

Enantiomeric Separation of Several Oxirane Derivatives by High Performance Liquid Chromatography on Polysaccharide-Based Chiral Stationary Phases

Zhou, Wei, Liu, Bing, Yang, Guo-Sheng, Koppenhoefer, Bernhard, Aboul-Enein, Hassan Y.

Journal:

Journal of Liquid Chromatography & Related Technologies

Year:

2008

Language:

english

File:

PDF, 554 KB

english, 2008

28

Derivatization by the achiral reagent N-trifluoroacetylglycine : Enantiomer resolution of diols by gas chromatography on Chirasil-Val

Bernhard Koppenhoefer, Michael Walser, Ernst Bayer, Shedeh Abdalla

Journal:

Journal of Chromatography A

Year:

1986

Language:

english

File:

PDF, 685 KB

english, 1986

29

Access to (S)-2-methyloxetane and the precursor (S)-1,3-butanediol of high enantiomeric purity

Hintzer, Klaus, Koppenhoefer, Bernhard, Schurig, Volker

Journal:

Journal of Organic Chemistry

Year:

1982

Language:

english

File:

PDF, 1.09 MB

english, 1982

30

Quantitative bestimmung der vier konfigurationsisomeren von 4-pententriol durch gaschromatographie an D- und L-chirasil-val

Bernhard Koppenhoefer, Michael Walser, Detlef Schröter, Brigitte Häfele, Volker Jäger

Journal:

Year:

1987

File:

PDF, 443 KB

1987

31

Anwendung vond-Chirasil-Val bei der gas-chromatographischen Analytik von Enantiomeren

Ernst Bayer, Hans Allmendinger, Gerd Enderle, Bernhard Koppenhoefer

Journal:

Analytical and Bioanalytical Chemistry

Year:

1985

File:

PDF, 414 KB

1985

32

Derivatisierungsfreie Enantiomerentrennung von Hydroxy- und Carbonylverbindungen durch Gaschromatographie an Chirasil-Val

Dr. Bernhard Koppenhoefer, Hans Allmendinger, Graeme Nicholson

Journal:

Angewandte Chemie

Year:

1985

Language:

german

File:

PDF, 378 KB

german, 1985

33

Preparation and determination of configurationally pure trans-(2S,3S)-2,3-epoxybutane

Schurig, Volker, Koppenhoefer, Bernhard, Buerkle, Waldemar

Journal:

Journal of Organic Chemistry

Year:

1980

Language:

english

File:

PDF, 595 KB

english, 1980

34

Substitution with Sulfur at the Sterically Hindered Neopentyl Position: Preparation of 9-Mercaptocamphor and 9,10-Epithiocamphor

Koppenhoefer, Bernhard, Völlenkle, Horst, Brendle, Hans-Georg, Schwierskott, Marc

Journal:

Year:

1997

File:

PDF, 274 KB

1997

35

Derivatisierungsreaktionen zur gas-chromatographischen Enantiomerentrennung von Hydroxysäuren: Ein Methodenvergleich

Bernhard Koppenhoefer, Hans Allmendinger

Journal:

Analytical and Bioanalytical Chemistry

Year:

1987

Language:

german

File:

PDF, 556 KB

german, 1987

36

Direct Enantiomer Resolution of Hydroxy and Carbonyl Compounds by Gas Chromatography on Chirasil-Val

Dr. Bernhard Koppenhoefer, Dipl.-Chem. Hans Allmendinger, Graeme Nicholson

Journal:

Angewandte Chemie International Edition

Year:

1985

Language:

english

File:

PDF, 228 KB

english, 1985

37

[Journal of Chromatography Library] The Science of Chromatography Lectures Presented at the A J F! Martin Honorary Symposium, Urbino, May 2 7-37, 1985 Volume 32 || Chiral Recognition in Gas Chromatographic Analysis of Enantiomers on Chiral Polysiloxanes

Koppenhoefer, Bernhard

Year:

1985

Language:

english

File:

PDF, 1.11 MB

english, 1985

38

Recognition of enantiomers by Chirasil-Val and oligopeptide analogues as studied by gas-phase calorimetry and 1H NMR spectroscopy in solution

Konrad Lohmiller, Ernst Bayer, Bernhard Koppenhoefer

Journal:

Journal of Chromatography A

Year:

1993

Language:

english

File:

PDF, 407 KB

english, 1993

39

Chiral Discrimination in the Liquid Phase: Excess Volumes of Binary Mixtures of Amino Acid Derivatives

Lepori, Luciano, Koppenhoefer, Bernhard

Journal:

Journal of Physical Chemistry

Year:

1994

Language:

english

File:

PDF, 282 KB

english, 1994

40

A Useful Route to ( R )-Alkyloxiranes of Defined Enantiomeric Purity from ( S )-Amino Acids

Koppenhoefer, Bernhard, Weber, Roland, Schurig, Volker

Journal:

Year:

1982

File:

PDF, 222 KB

1982

41

Chiral recognition of halo carboxylic acid amides studied by gas chromatography on chirasil-val

Bernhard Koppenhoefer, Eckhard M. Koch, Graeme J. Nicholson, Ernst Bayer

Journal:

Journal of Chromatography A

Year:

1987

Language:

english

File:

PDF, 724 KB

english, 1987

42

Separation of drug enantiomers by capillary electrophoresis in the presence of neutral cyclodextrins

Bernhard Koppenhoefer, Xiaofeng Zhu, Andreas Jakob, Stefan Wuerthner, Bingcheng Lin

Journal:

Journal of Chromatography A

Year:

2000

Language:

english

File:

PDF, 538 KB

english, 2000

43

A Useful Route to Both Enantiomers of 1-Amino-2-alkanols: Synthesis of 1-Amino- 3-methyl-2-butanol from Valine

Koppenhoefer, Bernhard, Trettin, Ulrich, Wächtler, Andreas

Journal:

Year:

1994

File:

PDF, 152 KB

1994

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