Volume 75; Issue 4

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Helvetica Chimica Acta
Volume 75; Issue 4

Helvetica Chimica Acta

Volume 75; Issue 4

1

Masthead

Journal:

Helvetica Chimica Acta

Year:

1992

File:

PDF, 29 KB

1992

2

Die Entwicklung der Carotinoid-Chemie im Spiegel der Helvetica Chimica Acta 1922–1991

Conrad Hans Eugster

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

german

File:

PDF, 3.83 MB

german, 1992

3

SN2 or Electron Transfer?? A new technique discriminates the mechanisms of oxidative addition of alkyl halides to corrinato- and porphyrinatocobalt(I)

De-Ling Zhou, Peristera Walder, Rolf Scheffold, Lorenz Walder

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 921 KB

english, 1992

4

Trialkyltin Compounds as Neutral Carriers for Anions in PVC Liquid Membranes and Complex Formation with Oxoanions

Karl Fluri, Juraj Koudelka, Wilhelm Simon

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 704 KB

english, 1992

5

Efficient Synthesis of Enantiomerically Pure α-Ionone from (R)- and (S)-α-Damascone

Charles Fehr, Olivier Guntern

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 332 KB

english, 1992

6

Kinetic Study on Stability of Schiff Base of Pyridoxal 5′-Phosphate and Leucine in Water Media with Cationic Surfactants

Miguel A. Vázquez, Francisco Muñoz, Josefa Donoso, Francisco García-Blanco

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 521 KB

english, 1992

7

Heterocyclen aus Bis(alkoxycarbonyl)keten-ethylen-acetalen ( = Dialkyl-2-(1,3-dioxolan-2-yliden)propan-1,3-dioate). Synthese und Eigenschaften einer neuen Klasse von Pyrazolium-Betainen

Richard Neidlein, Günter Schröder, Claus Krieger, Danijel Kikelj

Journal:

Helvetica Chimica Acta

Year:

1992

File:

PDF, 796 KB

1992

8

Catalytic One-Pot Osmylation of Cyclohexadienes: Stereochemical and conformational studies of the resulting polyols

Théophile Tschamber, Frédérique Backenstrass, Hans Fritz, Jacques Streith

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 550 KB

english, 1992

9

Synthesis of Coumarins and Derivatives. Part 1. Biomimetic synthesis of esculetin and halogenated derivatives

Fernanda Borges, Madalena Pinto

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 438 KB

english, 1992

10

Caro-Cryptands: Tris-carotenoid macrobicyclic ligands–synthesis, crystal structure, and dinuclear copper(I) complexes

Jean-Marie Lehn, Jean-Pierre Vigneron, Itka Bkouche-Waksman, Jean Guilhem, Claudine Pascard

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 482 KB

english, 1992

11

A New Synthesis of Coprine and O-Ethylcoprine

Thomas Kienzler, Peter Strazewski, Christoph Tamm

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 484 KB

english, 1992

12

The Diels-Alder Chemoselectivity of 3,4,6,7-Tetramethylidenebicyclo[3.2.1]octane-2-exo, 8-syn-diyl Derivatives

François Claret, Alain Razaname, Pierre Vogel

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 758 KB

english, 1992

13

Ab-initio-Studien an N- Acyliminium-Ionen

Bernd Lamatsch, Dieter Seebach, Tae-Kyu Ha

Journal:

Helvetica Chimica Acta

Year:

1992

File:

PDF, 755 KB

1992

14

1,7-Dideaza-2′-deoxyadenosine: Building blocks for solid-phase synthesis and secondary structure of base-modified oligodeoxyribonucleotides

Frank Seela, Thomas Wenzel

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 743 KB

english, 1992

15

Photolytic Reactions of (o-Allylbenzyl)dicarbonyl(η5-cyclopentadienyl)iron

Gebhard Thoma, Bernd Giese

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 356 KB

english, 1992

16

Base Hydrolysis of Pentaaminecobalt(III) Complexes: The [CoX(dien) (dapo)]n+ system. Part 1. Syntheses, structures, configuration, and spectroscopy

Peter Comba, Donald A. House, W. Gregory Jackson, Werner Marty, Helen Stoeckli-Evans, Luc Zipper

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 1.19 MB

english, 1992

17

Base Hydrolysis of Pentaaminecobalt(III) Complexes: The [CoX(dien) (dapo)]n+ system. Part 2. Structure and reactivity of the pentacoordinate intermediate

Peter Comba, W. Gregory Jackson, Werner Marty, Luc Zipper

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 1.55 MB

english, 1992

18

Base Hydrolysis of Pentaaminecobalt (III) Complexes: The [CoX(dien) (dapo)]n+ system. Part 3. The internal conjugate base mechanism

Peter Comba, W. Gregory Jackson, Werner Marty, Luc Zipper

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 751 KB

english, 1992

19

Synthèse et propriétés photochromiques de 1, 3-dihydrospiro[2H-indole-2,3′-[3H]pyrimido[5,4-f][1,4]benzoxazines] et de 1,3-dihydrospiro[2H-indole-2,7′-[7H]thiazolo[5,4-f][1,4]benzoxazines]

Pascale Tardieu, Roger Dubest, Jean Aubard, Arlette Kellmann, Francis Tfibel, André Samat, Robert Gugliemetti

Journal:

Helvetica Chimica Acta

Year:

1992

File:

PDF, 817 KB

1992

20

Confromational Studies on Peptides Containing Enantiometric α-Methyl α-Amino Acids. Part I. Differential conformational properties of (R)- and (S)-2-methylaspartic acid

Karl-Heinz Altmann, Eva Altmann, Manfred Mutter

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 828 KB

english, 1992

21

Axially Dissymmetric diphosphines in the Biphenyl Series: Crystal structures of three new group-VIII metal complexes of (6,6′-dimethyl-1,1′-biphenyl-2,2′-diyl)bis(diphenylphosphine) ( = biphemp)

Andreas Knierzinger, Peter Schönholzer

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 604 KB

english, 1992

22

Synthesis and Properties of Macrobicyclic Cryptates Incorporating Five- and Six-Membered Biheteroaryl Units

Jean-Marie Lehn, Jean-Bernard Regnouf De Vains

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 1.10 MB

english, 1992

23

Pterin Chemistry. Part 92.. Loading experiments with 6α,β-tetrahydro-L-[3′-2H1] biopterin

Carmen Adler, Hans-Christoph Curtius, Erich Wetzel, Max Viscontini, Tullio A. Giudici, Milan Blaskovics, Marie O. Rolland, Pierre Guibaud

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 268 KB

english, 1992

24

Struktur zweier trans-Bis (N,N-dimethylethylendiamin)kobalt(III)-Komplexe. Simulation der sterischen Ligand-Ligand-Wechselwirkungen durch ein ‘Molecular-Mechanics’-Modell

Roman Eminger, Silvio Fallab, Margareta Zehnder, Max Dobler

Journal:

Helvetica Chimica Acta

Year:

1992

File:

PDF, 347 KB

1992

25

Ring-Transformation von Imidazolidin–2,4-dionen ( = Hydantoinen) zu 4H-Imidazolen bei der Umsetzung mit 3-(Dimethylamino)-2,2-dimethyl-2H -azirin

Marlise Schläpfer-Dähler, Gabriele Mukherjee-Müller, Heinz Heimgartner

Journal:

Helvetica Chimica Acta

Year:

1992

File:

PDF, 712 KB

1992

26

Cycloaddition of Carbodiimides with a Heteroaromatic Substituent to Allenic Acids

Latchezar S. Trifonov, Nadja I. Christova, Valentin S. Dimitrov, Alexander S. Orahovats

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 227 KB

english, 1992

27

Nucleosides. Part L.. Structure of lumazine N1-(2′-deoxy-D-ribonucleosides) ( = 1-(2′-deoxy-D-ribofuranosyl)pteridine-2,4(1H,3H)-diones): A revision of the anomeric configuration

Xiaodong Cao, Wolfgang Pfleiderer, Helmut Rosemeyer, Frank Seela, Willi Bannwarth, Peter Schönholzer

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 369 KB

english, 1992

28

Eine neue einfache Synthese spirocyclischer 1H-Chinolin-Derivate

Harald Walter, Hanspeter Sauter, Tammo Winkler

Journal:

Helvetica Chimica Acta

Year:

1992

File:

PDF, 401 KB

1992

29

Benzene Oxidation by ‘Bare’ FeO+ in the Gas Phase

Detlef Schröder, Helmut Schwarz

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 411 KB

english, 1992

30

Stereoselectivity in Reactions of Metal Complexes. Part XIV.. Use of circular dichroism to determine the stereoselective formation of [M(his)2] and [M(PhEt-sal)2] (M = Ni2+, Cu2+, his = histidine, PhEt-sal = N-(1-phenylethyl)salicylaldimine)

Klaus Bernauer, Stephanie Bourqui, Deirdre Huti-Cleary, Ruth Warmuth

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 424 KB

english, 1992

31

Studies on the Enzymatic Acylation of Quinic Acid, Shikimic Acid, Shikimic Acid, and Their Derivatives in Organic Solvents

Bruno Danieli, Paolo De Bellis, Laura Barzaghi, Giacomo Carrea, Gianluca Ottolina, Sergio Riva

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 553 KB

english, 1992

32

The Vinylidene/Acyl Coupling at Rhenium Centers

Sibylle Feracin, Hans-Ulrich Hund, H. William Bosch, Elisabeth Lippmann, Wolfgang Beck, Heinz Berke

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 486 KB

english, 1992

33

Synthesis and X-Ray Structural Studies of ‘4,7,13-Trioxa-1,10-diaza-5,6-benzocyclopentadecane-2,9-dione’ ( = 5,6,9,10-Tetrahydro-2H, 8H-benzo[b][1,4,10]trioxa[7,13]diazacyclopentadecene-311(4H,12H)-dione) and ‘4,7,13,16-Tetraoxa-1,10-diaza-5,6-benzocyclooctadecane-2,9-dione’ ( = 5,6,8,9,12,13-Hexahydro-2H,11H-benzo[b][1,4,10,13]tetraoxa- [7,16]diazacyclooctadecene-3,14(4H, 15H)-dione)

Przemyslaw Gluziński, Janusz Jurczak, Janusz W. Krajewski, Piotr Sałański, Tomasz Stankiewicz, Zofia Urbańczyk-Lipkowska, Thomas Armbruster, Hans-Beat Bürgi

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 306 KB

english, 1992

34

Complexes of Rhodium(III) with Two Chelating C⁁N Ligands and One Diimine Ligand

Urs Maeder, Alex Von Zelewsky, Helen Stoeckli-Evans

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 811 KB

english, 1992

35

Synthesis and Photochemistry of 5,5-Dimethyl-1H-pyrrol-2(5H)-one and of Some N-Substituted Derivatives

Andreas Ihlefeld, Paul Margaretha

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 469 KB

english, 1992

36

Mitteilungen

Journal:

Helvetica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 76 KB

english, 1992