Volume 64; Issue 4

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Helvetica Chimica Acta
Volume 64; Issue 4

Helvetica Chimica Acta

Volume 64; Issue 4

1

Masthead

Journal:

Helvetica Chimica Acta

Year:

1981

File:

PDF, 41 KB

1981

2

Proof of the Absolute Configuration of (−)-(S)-2-Hydroxy-β-ionone by correlation with ursolic acid and with (−)-trans-verbenol

Sina Escher, Wolfgang Giersch, Günther Ohloff

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 970 KB

english, 1981

3

Wittig-Reaktionen von sulfonierten Phosphoniomethylstrylaromaten mit aromatischen und heteroaromatischen Aldehyden

Journal:

Helvetica Chimica Acta

Year:

1981

File:

PDF, 988 KB

1981

4

Conformational Dependence of One-Bond Cα,H Spin Coupling in Cyclic Peptides

Huldrych Egli, Wolfgang Von Philipsborn

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 673 KB

english, 1981

5

Photolysis of dimethylnitrosamine in the gas phase

Georg Geiger, J. Robert Huber

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 394 KB

english, 1981

6

Heterodiamantane und strukturell verwandte Verbindungen. III.. Pentacyclische diäther der C11-reihe. 5, 13-Dioxapentacyclo-[6.5.0.02,6.03,12.04,9]tridecan, 4, 13-dioxapentacyclo [6.4.1.02,7.03,10.05,9]tridecan und 3, 10-dioxapentacyclo [7.3.1.02,7.04,12.06,11]tridecan

Willi Ammann, Camille Ganter

Journal:

Helvetica Chimica Acta

Year:

1981

File:

PDF, 1.87 MB

1981

7

A Note on Stereochemical Observations of the Deprotonation of Ethyl 2-Alkenoates

Ernst-Peter Krebs

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 167 KB

english, 1981

8

Ein neuer Reaktionsweg zu 1, 3-Dicarbonylderivaten. Modelluntersuchungen am A/B-Teil von 3-Oxo-5α-steroiden

Hans Berbalk, Karl Eichinger, Willibald Winetzhammer

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

german

File:

PDF, 377 KB

german, 1981

9

Some Observations Concerning 1H-NMR. Spectra of 5-hydroxy- and 5-acetoxy-steroid compounds

Mihailo Lj. Mihailović, Ljubinka Lorenc, Vladimir Pavlović, Hermann Fuhrer

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 341 KB

english, 1981

10

Cryptates Sphériques. Synthèse et Complexes d'Inclusion de Ligands Macrotricycliques Sphériques

Ernest Graf, Jean-Marie Lehn

Journal:

Helvetica Chimica Acta

Year:

1981

File:

PDF, 1.17 MB

1981

11

Rates of Proton Abstraction from Conjugated Dienes in the Gas Phase

Felix K. Meyer, Mark J. Pellerite, John I. Brauman

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 301 KB

english, 1981

12

The Influence of Molecular Host Lattices on Electronic Properties of Orbitally (Near-) Degenerate Transition Metal Complexes

John H. Ammeter, Linus Zoller, Jürg Bachmann, Philippe Baltzer, Eduard Gamp, René Bucher, Erich Deiss

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 909 KB

english, 1981

13

Reaktionen von 2- und 3-phenylsubstituierten Alkylakyliden-iminium-Ionen in der Gasphase. 5. Mitteilung über stossinduzierte Fragmentierungen von felddesorbierten Kationen

Matthias Fischer, Hans Jürgen Veith

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

german

File:

PDF, 572 KB

german, 1981

14

Carotenoids and Related Compounds. Part 36.. Further syntheses of zeaxanthin and rhodoxanthin

Peter R. Ellis, A. Erol Faruk, Gerard P. Moss, Basil C. L. Weedon

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 373 KB

english, 1981

15

Synthese und Struktur porphinoider Nickel-Komplexe mit axial orientierten Seitenketten

Hans Christian Mez, Jürg Löliger, Ulrich Vogel, Kurt Meier, Rolf Scheffold

Journal:

Helvetica Chimica Acta

Year:

1981

File:

PDF, 799 KB

1981

16

Synthese optisch aktiver Nickel-Komplexe mit porphinoidem Ligandsystem

Ulrich Vogel, Kurt Meier, Jürg Löliger, Rolf Scheffold

Journal:

Helvetica Chimica Acta

Year:

1981

File:

PDF, 689 KB

1981

17

Anwendung der α-Alkinon-Cyclisierung: Synthese von rac-Modhephen

Martin Karpf, André S. Dreiding

Journal:

Helvetica Chimica Acta

Year:

1981

File:

PDF, 710 KB

1981

18

De la chimie des ptérines. 78e Communication.. Synthèse de l'ester tripolyphosphorique de la tétrahydro-5, 6, 7, 8-D-néoptérine. Essai d'interprétation de la biosynthèse de la L-sépiaptérine

Siméon Antoulas, Max Viscontini

Journal:

Helvetica Chimica Acta

Year:

1981

File:

PDF, 264 KB

1981

19

Synthesis of Reactive Intermediates for Natural Cyclopentane Derivatives from (−)-Quinic Acid: Preparation of 11α-hydroxy-13-oxaprostanoic acid

Jean-Claude Barrière, Angèle Chiaroni, Jeanine Cléophax, Stephan D. Géro, Claude Riche, Mare Vuilhorgne

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 242 KB

english, 1981

20

Chiral 1, 4-Benzodiazepin-2-one, template for enantioselective synthesis of α-amino acids and their α-deuterio congeners. Preliminary communication

Enio Decorte, Roberto Toso, Alessandro Sega, Vitomir Šunjié, Živa Ružić-Toroš, Biserka Kojić-Prodić, Nevenka Bresciani-Pahor, Giorgio Nardin, Lucio Randaccio

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 244 KB

english, 1981

21

119Sn- and 31P-NMR. Spectroscopy of the 5-coordinate complexes [Rh (SnClnBr(3−n)) (norbornadiene) (tertiary phosphine)2]

Maria Garrlda, Victoria Garcia, Matthias Kretschmer, Paul S. Pregosin, Heinz Ruegger

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 427 KB

english, 1981

22

Total Synthesis of All Eight Stereoisomers of α-Tocopheryl Acetate. Determination of their diastereoisomeric and enantiomeric purity by gas chromatography

Noal Cohen, Clifford G. Scott, Christian Neukom, Rocco J. Lopresti, Giuseppe Weber, Gabriel Saucy

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 895 KB

english, 1981

23

A Comparative Study of Platinum Di (t-butyl) (15N2)diimine and trans-[(PtCl2(N-ligand)PBu3)] complexes by 195Pt-, 31P- and 15N-NMR

Henk van der Poel, Gerard van Koten, David M. Grove, Paul S. Pregosin, Karl A. Ostoja Starzewski

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 596 KB

english, 1981

24

New Triterpenes from the Bark of Western White Pine (Pinus monticola DOUGL.)

James P. Kutney, Günter Eigendorf, Brian R. Worth, John W. Rowe, Anthony H. Conner, Bhimsen A. Nagasampagi

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 1.41 MB

english, 1981

25

Nitrosoalkenes: Synthesis and Reactivity

Eric Francotte, Robert Merényi, Brigitte Vandenbulcke-Coyette, Heinz-Günther Viehe

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 484 KB

english, 1981

26

Azimine. V.. Untersuchungen zur stereoisomerie an der N(2), N(3)-bindung von 2, 3-dialkyl-1-phthalimido-aziminen

Christian Leuenberger, Lienhard Hoesch, André S. Dreiding

Journal:

Helvetica Chimica Acta

Year:

1981

File:

PDF, 943 KB

1981

27

Mitteilungen

Journal:

Helvetica Chimica Acta

Year:

1981

Language:

english

File:

PDF, 129 KB

english, 1981

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