Volume 73; Issue 3

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Helvetica Chimica Acta
Volume 73; Issue 3

Helvetica Chimica Acta

Volume 73; Issue 3

1

Masthead

Journal:

Helvetica Chimica Acta

Year:

1990

File:

PDF, 35 KB

1990

2

A CD-Spectroscopic Alternative to Methylation Analysis of Oligosaccharides: Reference Spectra for Identification of Chromophoric Glycopyranoside Derivatives

William T. Wiesler, Nikolina Berova, Makoto Ojika, Harold V. Meyers, Mayland Chang, Peng Zhou, Lee-Chiang Lo, Masatake Niwa, Reiji Takeda, Koji Nakanishi

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 1.92 MB

english, 1990

3

A Theoretical Investigation of Enantioselectivity: Michael Reaction of Secondary Enamines with Enones

Alain Sevin, Daniel Masure, Claude Giessner-Prettre, Michel Pfau

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 1.42 MB

english, 1990

4

Optical Absorption Spectra for the Solvated Electron Observed in the Pulse Radiolysis of cis- and trans- Isomers of 3- and 4-Methylcyclohexanols

Noboru Fujisaki, Pascal Comte, Pierre P. Infelta, Tino Gäumann

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 207 KB

english, 1990

5

Boscialin and Boscialin 4′-O-Glucoside, Two New Compounds Isolated from the Leaves of Boscia salicifolia OLIV

Niklaus Pauli, Urs Séquin, Angelika Walter

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 333 KB

english, 1990

6

How good are quartic functions to describe double-minimum energy profiles? Nitrogen inversion as example

Tae-Kyu Ha, Jack D. Dunitz

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 563 KB

english, 1990

7

Umsetzung von 3-(Dimethylamino)-2H-azirinen mit 1,3-Oxazolidin-2-thion zu 3-(2-Hydroxyethyl)-2-thiohydantoinen

Simon M. Ametamey, Heinz Heimgartner

Journal:

Helvetica Chimica Acta

Year:

1990

File:

PDF, 284 KB

1990

8

Reaktionen von 3-(Dimethylamino)-2H-azirinen mit 1,3-Benzoxazol-2(3H)-thion

Simon M. Ametamey, Heinz Heimgartner

Journal:

Helvetica Chimica Acta

Year:

1990

File:

PDF, 566 KB

1990

9

A Method for Preparing Oligodeoxynucleotides Containing an Apurinic Site

Katrin Groebke, Christian Leumann

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 672 KB

english, 1990

10

Conformation Analysis of the 8-Membered Ring of 12H-Dibenzo [d, g] [1, 3, 2] dioxathiocines: Symmetric and Asymmetric Conformations

P. Hug, Sandra Kolly, Hansrudolf Meier, Rita Pitteloud, Dieter Poppinger, Grety Rihs, Günther Rist

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 402 KB

english, 1990

11

N-Acylureas in Peptide Synthesis: An X-Ray Diffraction and IR-Absorption Study

Claudio Toniolo, Giovanni Valle, Marco Crisma, Vittorio Moretto, Jan Izdebski, Jacek Pelka, Conrad H. Schneider

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 477 KB

english, 1990

12

Homogeneous and heterogeneous asymmetric reactions. Part 5. Diastereoselective and enantioselective hydrogenation of cyclic β-keto esters on modified Raney-nickel catalysts

Gyula Wittmann, György Göndös, Mihály Bartók

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 320 KB

english, 1990

13

Stereoselectivity of Dienamine [4 + 2] Cycloadditions Synthesis of Functionalised Decalins and Drimanes

Roger L. Snowden, Robert Brauehli, Manfred Wüst

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 781 KB

english, 1990

14

On the Absolute Configuration of Penlanfuran and Related Sesquiterpenoids of the Sponge Dysidea fragilis from the North-Brittany Sea

Ines Mancini, Graziano Guella, Marino Cavazza, Francesco Pietra

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 455 KB

english, 1990

15

Enantio- and Diastereoselective Aldol-Reaction of 2,6-Dimethylphenyl Propionate Using Titanium-Carbohydrate Complexes

Rudolf O. Duthaler, Peter Herold, Susanne Wyler-Helfer, Martin Riediker

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 968 KB

english, 1990

16

Acid-Promoted Rearrangements of N-Substituted 8-Oxa-3-azatricyclo[3.2.1.02′4] octane-6,7-dicarboxylates: Remote Substituent Effects on the Regioselectivity of the N-Acylaziridine/Dihydrooxazone Rearrangement

Susy Allemann, Jean-Louis Reymond, Pierre Vogel

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 1.18 MB

english, 1990

17

Cationic Palladium(II), Platinum(II), and Rhodium(I) Complexes as Acetalisation Catalysts

Fabrizio Gorla, Luigi M. Venanzi

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 384 KB

english, 1990

18

Pd-katalysierter Deuterium-Austausch am Octa(silsesquioxan)H8Si8O12 zu D8Si8O12

Heribert Bürgy, Gion Calzaferri

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

german

File:

PDF, 106 KB

german, 1990

19

Synthese von enantiomerenreinen ‘Grasshopper’-Ketonen und verwandten Verbindungen

Andreas Baumeler, Walter Brade, Andreas Haag, Conrad Hans Eugster

Journal:

Helvetica Chimica Acta

Year:

1990

File:

PDF, 1009 KB

1990

20

Metal complexes of macrocyclic ligands. Part XXXIII. Effect of the side-chain length on the on/off equilibrium in the Ni2+ and Cu2+ complexes of 11-(2-aminoethyl)- and 11-(3-aminopropyl)-1,4,7,11-tetraazacyclotetradecane

André Schiegg, Thomas A. Kaden

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 395 KB

english, 1990

21

Synthesis, Structure, and 2D-NMR Studies of Novel Chiral (η3-Allyl)palladium(II) Complexes Containing the Bidentate Ligand Sparteine

Antonio Togni, Grety Rihs, Paul S. Pregosin, Christian Ammann

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 565 KB

english, 1990

22

Enantiomeric 3,7-Dimethylocta-1,7-dienes as Useful Chiral Building Blocks. A New Access to Both Optical Antipodes of Natural (E)-3,7-Dimethyloct-2-ene-1,8-diol and (E)-3,7-Dimethyloct-2-ene-1,8-dicarboxylic Acid

Wolfgang Giersch, Karl H. Schulte-Elte

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 371 KB

english, 1990

23

Cyclische Phenyl-carbamate des Miotin-Typs und ihre Wirkung auf die Acetylcholinesterase

René Amstutz, Albert Enz, Martin Marzi, Jakob Boelsterli, Malcolm Walkinshaw

Journal:

Helvetica Chimica Acta

Year:

1990

File:

PDF, 946 KB

1990

24

Chiral [2H]-Labelled Methylene Groups in Trienoic- and Dienoic Fatty Acids: A Facile Approach via Asymmetric Epoxidation of [2H] Allyl Alcohols

Christoph Neumann, Wilhelm Boland

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 499 KB

english, 1990

25

Mitteilungen

Journal:

Helvetica Chimica Acta

Year:

1990

File:

PDF, 98 KB

1990