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1

Silicon(II) Cation Cp*Si: + X – : A New Class of Efficient Catalysts in Organosilicon Chemistry

Fritz-Langhals, Elke

Journal:

Organic Process Research & Development

Year:

2019

Language:

english

File:

PDF, 1008 KB

english, 2019

2

Notizen Eine Synthese von Nornikotin- und Nikotin-2-carboxamid

Elke Langhals, Heinz Langhals, Christoph Rüchardt

Journal:

European Journal of Organic Chemistry

Year:

1983

Language:

german

File:

PDF, 226 KB

german, 1983

3

Cycloadditions of two thiocarbonyl ylides with α,β-unsaturated esters and nitriles: steric course and mechanism

Rolf Huisgen, Grzegorz Mloston, Henry Giera, Elke Langhals

Journal:

Year:

2002

Language:

english

File:

PDF, 311 KB

english, 2002

4

Technical Production of Aldehydes by Continuous Bleach Oxidation of Alcohols Catalyzed by 4-Hydroxy-TEMPO

Fritz-Langhals, Elke

Journal:

Organic Process Research & Development

Year:

2005

Language:

english

File:

PDF, 125 KB

english, 2005

5

Novel Si(II) + and Ge(II) + Compounds as Efficient Catalysts in Organosilicon Chemistry: Siloxane Coupling Reaction

Fritz-Langhals, Elke, Werge, Sven, Kneissl, Sotirios, Piroutek, Phillip

Journal:

Organic Process Research & Development

Year:

2020

File:

PDF, 1.38 MB

2020

6

`Thiobenzophenone S-Methylide' (=(Diphenylmethylidenesulfonio)methanide), and C,C Multiple Bonds: Cycloadditions and Dipolarophilic Reactivities

Rolf Huisgen, Xingya Li, Henry Giera, Elke Langhals

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 222 KB

english, 2001

7

Cycloadditions of `Thiocarbonyl Ylides' with Tetracyanoethylene (=Ethenetetracarbonitrile): Interception of Intermediates

Rolf Huisgen, Grzegorz Mloston, Elke Langhals

Journal:

Helvetica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 169 KB

english, 2001

8

Massive Steric Hindrance in Two ‘Thiocarbonyl Ylides': Cycloadditions with Tetra-Acceptor-Substituted Ethylenes via Zwitterionic Intermediates

Henry Giera, Rolf Huisgen, Elke Langhals, Kurt Polborn

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 282 KB

english, 2002

9

Reactions of Sterically Hindered ‘Thiocarbonyl Ylides' with 1,2-Bis(trifluoromethyl)ethene-1,2-dicarbonitrile: Isolation of a Cyclic Seven-Membered Ketene Imine

Rolf Huisgen, Grzegorz Mlostoń, Elke Langhals, Takumi Oshima

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 201 KB

english, 2002

10

Destillative Diastereomerentrennung - ein neues Verfahren zur Darstellung von optisch aktiven heterocyclischen Carbonsäuren

Dr. Elke Fritz-Langhals

Journal:

Angewandte Chemie

Year:

1993

Language:

german

File:

PDF, 273 KB

german, 1993

11

Separation of Diastereomers by Distillation—A New Procedure for the Synthesis of Optically Active Heterocyclic Carboxylic Acids

Dr. Elke Fritz-Langhals

Journal:

Angewandte Chemie International Edition

Year:

1993

Language:

english

File:

PDF, 274 KB

english, 1993

12

Die Trocknung von tert-Butylhydroperoxid nach einem einfachen, erstmals gefahrlosen Verfahren

Heinz Langhals, Elke Fritz, Ingrid Mergelsberg

Journal:

European Journal of Inorganic Chemistry

Year:

1980

Language:

german

File:

PDF, 195 KB

german, 1980

13

Eine einfache Synthese von 3-Methoxypyridin und seinen Analogen durch Alkylierungsreaktionen

Christel Finkentey, Elke Langhals, Heinz Langhals

Journal:

European Journal of Inorganic Chemistry

Year:

1983

Language:

german

File:

PDF, 203 KB

german, 1983

14

Eine einfache Synthese der 5-Cyan-2-pyridincarbonsäure und ihres Amids

Elke Langhals, Heinz Langhals, Christoph Rüchardt

Journal:

European Journal of Inorganic Chemistry

Year:

1984

Language:

german

File:

PDF, 163 KB

german, 1984

15

Der Nachweis eines Radikalketten-Mechanismus für die Knabe-Reaktion von 1,2-Dihydro-2-methylpapaverin

Elke Langhals, Heinz Langhals, Christoph Rüchardt

Journal:

European Journal of Inorganic Chemistry

Year:

1984

File:

PDF, 990 KB

1984

16

1,3-Dipolare Cycloadditionen, 92 Reaktionen aliphatischer Diazoverbindungen mit vierfach Acceptorsubstituierten Ethylenen

Rolf Huisgen, Ulrich Eichenauer, Elke Langhals, Abhijit Mitra, Joaquin Rodriguez Moran

Journal:

European Journal of Inorganic Chemistry

Year:

1987

Language:

german

File:

PDF, 630 KB

german, 1987

17

A Novel Dimerization Mode of a Cyclic Ketene Imine

Elke Langhals, Rolf Huisgen, Kurt Polborn

Journal:

Chemistry - A European Journal

Year:

2004

Language:

english

File:

PDF, 197 KB

english, 2004

18

ChemInform Abstract: Synthesis of Optically Active (2-Fluoroacyl)benzenes.

Elke Fritz-Langhals

Journal:

Year:

2000

File:

PDF, 28 KB

2000

19

Aliphatic Thiocarbonyl Ylides and Thiobenzophenone: Experimental Study of Regiochemistry and Methylene Transfer in Cycloadditions

Rolf Huisgen, Grzegorz Mloston, Henry Giera, Elke Langhals, Kurt Polborn, Reiner Sustmann

Journal:

European Journal of Organic Chemistry

Year:

2005

Language:

english

File:

PDF, 228 KB

english, 2005

20

Dichotomy of 1,3-dipolar cycloreversions in a tetrasubstituted 2,5-dihydro-1,3,4-thiadiazole

Elke Langhals, Rolf Huisgen

Journal:

Heteroatom Chemistry

Year:

2006

Language:

english

File:

PDF, 192 KB

english, 2006

21

1,3-Dipolar cycloadditions of diphenyldiazomethane to thioketones: Rate measurements disclose thiones to be superdipolarophiles

Rolf Huisgen, Elke Langhals

Journal:

Heteroatom Chemistry

Year:

2006

Language:

english

File:

PDF, 226 KB

english, 2006

22

Neue Dimethinmerocyaninfarbstoffe mit J-Aggregation in stark verdünnter Lösung

Elke Langhals, Heinz Balli

Journal:

Helvetica Chimica Acta

Year:

1985

Language:

german

File:

PDF, 970 KB

german, 1985

23

Cyclic Seven-Membered Ketene Imines from Hindered ‘Thiocarbonyl Ylides’ and 2,3-Bis(trifluoromethyl)fumaronitrile: Properties and Surprising Reactions

Rolf Huisgen, Elke Langhals, Kurt Polborn, Konstantin Karaghiosoff

Journal:

Helvetica Chimica Acta

Year:

2004

Language:

english

File:

PDF, 287 KB

english, 2004

24

Eine einfache Synthese von Tetramethyloxamid

Elke Fritz, Heinz Langhals, Christoph Rüchardt

Journal:

European Journal of Organic Chemistry

Year:

1981

Language:

german

File:

PDF, 187 KB

german, 1981

25

Eine einfache neue Synthese der Fusarinsäure und anderer 5-Alkyl-2-pyridincarbonsäuren

Elke Langhals, Heinz Langhals, Christoph Rüchardt

Journal:

European Journal of Organic Chemistry

Year:

1982

Language:

german

File:

PDF, 951 KB

german, 1982

26

Process optimization of a catalyzed bleach oxidation for the production of functionalized aldehydes using microreaction technology

Wolfgang Ferstl, Maud Schwarzer, Stefan Loebbecke, Elke Fritz-Langhals, Juergen Stohrer

Journal:

Chemical Engineering Journal

Year:

2008

Language:

english

File:

PDF, 708 KB

english, 2008

27

Simple synthesis of optically active 2-fluoropropanoic acid and analogs of high enantiomeric purity

Elke Fritz-Langhals, Gabi Schu¨tz

Journal:

Tetrahedron Letters

Year:

1993

Language:

english

File:

PDF, 300 KB

english, 1993

28

Synthesis of optically active 1-fluoroalkyl benzenes

Elke Fritz-Langhals

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 331 KB

english, 1994

29

Alkylation of ketones by use of solid KOH in dimethyl sulfoxide

Elke Langhals, Heinz Langhals

Journal:

Tetrahedron Letters

Year:

1990

Language:

english

File:

PDF, 201 KB

english, 1990

30

1,3-cycloadditions of aliphatic thione S-methylides to dimethyl 2,3-dicyanofumarate and 2,3-dicyanomaleate; a test case for steric course and mechanism

Grzegorz Mloston, Elke Langhals, Rolf Huisgen

Journal:

Tetrahedron Letters

Year:

1989

Language:

english

File:

PDF, 295 KB

english, 1989

31

Thiones as superdipolarophiles

Rolf Huisgen, Elke Langhals

Journal:

Tetrahedron Letters

Year:

1989

Language:

english

File:

PDF, 231 KB

english, 1989

32

Synthesis of aromatic aldehydes by laccase-mediator assisted oxidation

Elke Fritz-Langhals, Brigitte Kunath

Journal:

Tetrahedron Letters

Year:

1998

Language:

english

File:

PDF, 124 KB

english, 1998

33

The first two-step 1,3-dipolar cycloadditions: non-stereospecificity

Huisgen, Rolf., Mloston, Grzegorz., Langhals, Elke.

Journal:

Journal of the American Chemical Society

Year:

1986

Language:

english

File:

PDF, 291 KB

english, 1986

34

The first two-step 1,3-dipolar cycloadditions: interception of intermediate

Huisgen, Rolf, Mloston, Grzegorz, Langhals, Elke

Journal:

Journal of Organic Chemistry

Year:

1986

Language:

english

File:

PDF, 398 KB

english, 1986

35

A crystalline seven-membered cyclic ketenimine from a thiocarbonyl-S-methylide

Huisgen, Rolf, Langhals, Elke, Noeth, Heinrich

Journal:

Journal of Organic Chemistry

Year:

1990

Language:

english

File:

PDF, 369 KB

english, 1990

36

Synthesis and Hydrolysis of Alkoxy(aminoalkyl)diorganylsilanes of the Formula Type R 2 (RO)Si(CH 2 ) n NH 2 (R = Alkyl, n = 1-3): A Systematic Experimental and Computational Study

Ehbets, Julia, Lorenzen, Sabine, Mahler, Christoph, Bertermann, Rüdiger, Berkefeld, André, Poater, Jordi, Fritz-Langhals, Elke, Weidner, Richard, Bickelhaupt, F. Matthias, Tacke, Reinhold

Journal:

European Journal of Inorganic Chemistry

Year:

2016

Language:

english

File:

PDF, 2.93 MB

english, 2016

37

New thione chemistry

Fisera, Lubor, Huisgen, R., Kalwinsch, Ivars, Langhals, Elke, Li, X., Mloston, G., Polborn, K., Rapp, J., Sicking, W., Sustmann, R.

Journal:

Pure & Applied Chemistry

Year:

1996

Language:

english

File:

PDF, 667 KB

english, 1996

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