Works matching IS 0018019X AND DT 1973 AND VI 56 AND IP 5

Results: 48

The ring contraction of cyclic trimethylsilyl enol ethers with arenesulfonyl azides. Ring expansion and ring contraction reactions by means of diazonium betaines. III [1]. Preliminary communication.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1826, doi. 10.1002/hlca.19730560547

By:

Wohl, Ronald A.

Publication type:

Article

Synthese und Eigenschaften einiger neuer Mono(π-cyclopentadienyl)-Nickel-Komplexe.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1620, doi. 10.1002/hlca.19730560518

By:

Harder, Viktor;
Werner, Helmut

Publication type:

Article

Über Pterinchemie. 42. Mitteilung [1]. Synthese von 6-Hydroxymethyl-mono-, di- und triphosphat sowie deren 7, 8-Dihydroderivate.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1710, doi. 10.1002/hlca.19730560529

By:

Viscontini, Max;
Furuta, Yoshiteru

Publication type:

Article

Intermediaires organiques du germanium divalent: III obtention de germylenes γ-hydroxyles à partir de 3-chlorohydrogermyl-1-propanols et de 3-methoxyhydrogermyl-1-propanols.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1638, doi. 10.1002/hlca.19730560520

By:

Barrau, Jacques;
Satgé, Jacques;
Massol, Michel

Publication type:

Article

Nuclear Quadrupole Resonance and Stereochemistry II. Vicinal cis- and trans-dichloro derivatives of carbocyclic systems.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1720, doi. 10.1002/hlca.19730560531

By:

Ardalan, Ziba;
Lucken, Edwin A. C.;
Masson, S.

Publication type:

Article

Thermische Umlagerungen von halogensubstituierten Aryl-propargyläthern.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1457, doi. 10.1002/hlca.19730560502

By:

Šarčevic̀, Nada;
Zsindely, Janos;
Schmid, Hans

Publication type:

Article

Utilisation d'ylides du phosphore en chimie des sucres. XVIII Synthèse de furannoses à insaturation conjuguée. Communication préliminaire.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1802, doi. 10.1002/hlca.19730560542

By:

Tronchet, Jean M. J.;
Cottet, Christian;
Gentile, Bernard;
Mihaly, Eva;
Zumwald, Jean-Bernard

Publication type:

Article

Etude conformationnelle dans l'approximation CNDO/BW: barrière de rotation interne de petites molécules organiques.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1565, doi. 10.1002/hlca.19730560513

By:

Weber, Jacques;
Gerdil, Raymond

Publication type:

Article

Untersuchungen über eine Carbonyl-Olefinierung mit α-metallierten Isocyaniden. Die Synthese von β-Carotin und anderen Polyenen.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1671, doi. 10.1002/hlca.19730560524

By:

Kienzle, Frank

Publication type:

Article

Über den Einfluss nichtpolarer Lösungsmittel auf Lage und Intensität von Absorptionsbanden in den Elektronenspektren apolarer Molekeln: II. Polyacetylene.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1752, doi. 10.1002/hlca.19730560535

By:

Christen, Heinz;
Kloster-Jensen, Else

Publication type:

Article

Reinvestigation of the Classical Synthesis of Cinchona Alkaloids. II. The synthesis of quinine and its naturally occurring diastereomers from quinotoxine.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1494, doi. 10.1002/hlca.19730560506

By:

Gutzwiller, Jürg;
Uskoković, Milan R.

Publication type:

Article

Über Pterinchemie. 43. Mitteilung [1]. Synthese von D-Neopterin-3′-phosphat und D-Neopterin-2′, 3′-cyclophosphat. Betrachtungen über die Biopterin-Biogenese.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1819, doi. 10.1002/hlca.19730560546

By:

Viscontini, Max;
Furuta, Yoshiteru

Publication type:

Article

'Lone pair' Electronic Structure, Conformation and Oxidation Behaviour of Diaziridines.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1614, doi. 10.1002/hlca.19730560517

By:

Haselbach, Edwin;
Mannschreck, Albrecht;
Seitz, Werner

Publication type:

Article

Synthese von 1α-Hydroxycholecalciferol. Vorläufige Mitteilung.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1708, doi. 10.1002/hlca.19730560528

By:

Fürst, Andor;
Labler, Ludvik;
Meier, Werner;
Pfoertner, Karl-Heinz

Publication type:

Article

Über das 2-Nitrothiophen.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1787, doi. 10.1002/hlca.19730560539

By:

Maag, Hubert;
Manukian, Badrig K.

Publication type:

Article

Nuclear Quadrupole Resonance and Stereochemistry I. α - Chloro ethers.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1715, doi. 10.1002/hlca.19730560530

By:

Ardalan, Ziba;
Lucken, Edwin A. C.

Publication type:

Article

Masthead.

Published in:: Helvetica Chimica Acta, 1973, v. 56, n. 5, p. fmi, doi. 10.1002/hlca.19730560501
Publication type:: Article

1, 4-Dimethylcyclohex-3-enyl Methyl Ketone, a monoterpenoid with a novel skeleton.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1800, doi. 10.1002/hlca.19730560541

By:

Thomas, Alan F.

Publication type:

Article

C(8) Epimeric 8-Hydroxy-erythromycins-B.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1557, doi. 10.1002/hlca.19730560512

By:

Kurath, Paul;
Martin, Jerry R.;
Tadanier, Jack;
Goldstein, Alma W.;
Egan, Richard S.;
Dunnigan, Daniel A.

Publication type:

Article

Die Synthese von all- trans-Retinylamin und anderen Polyenaminen.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1662, doi. 10.1002/hlca.19730560523

By:

Kienzle, Frank

Publication type:

Article

Photochemical α-Cleavage of β, γ-Unsaturated Aryl Ketones: Competition between recombination/disproportionation and dissociation in geminate singlet and triplet radical pairs.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1741, doi. 10.1002/hlca.19730560534

By:

Gonzenbach, Hans-Ulrich;
Schaffner, Kurt;
Blank, Bernd;
Fischer, Hanns

Publication type:

Article

Reinvestigation of the Classical Synthesis of Cinchona Alkaloids. I. A new synthesis of homomeroquinene and quinotoxine.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1485, doi. 10.1002/hlca.19730560505

By:

Grethe, Guenter;
Lee, Hsi Lin;
Mitt, Toomas;
Uskoković, Milan R.

Publication type:

Article

Bildung von 2-(1-Methyl-1, 4, 5, 6-tetrahydropyridyl-3)-2-oxazolin-4-on aus 1-Methyl-1, 4, 5, 6-tetrahydronicotinsäureamid und Bromessigsäureäthylester und seine Überführung in O-(1-Methylnipecotinoyl)glykolsäureamid via das dazu tautomere Cyclol

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1815, doi. 10.1002/hlca.19730560545

By:

Troxler, Franz

Publication type:

Article

Spectre de Resonance Paramagnétique Electronique de la Diphénylthiophosphine cristalline irradiée aux rayons X.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1552, doi. 10.1002/hlca.19730560511

By:

Geoffroy, Michel

Publication type:

Article

Komplexone XLVI. EDTA-Komplexe des Pt(II)-Ions mit und ohne einzähnige Fremdliganden.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1698, doi. 10.1002/hlca.19730560527

By:

Stünzi, Hans;
Anderegg, Giorgio

Publication type:

Article

Darstellung von neutralen, lipophilen Liganden für Membranelektroden mit Selektivität für Erdalkali-Ionen.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1780, doi. 10.1002/hlca.19730560538

By:

Ammann, Daniel;
Pretsch, Ernö;
Simon, Wilhelm

Publication type:

Article

Homopolar- and Heteropolar Bond Dissociation Energies and Heats of Formation of Radicals and Ions in the Gas Phase. I. Data on organic molecules.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1516, doi. 10.1002/hlca.19730560509

By:

Egger, Kurt W.;
Cocks, Alan T.

Publication type:

Article

Versuche zur Synthese der 4-Thio- D-glucose.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1792, doi. 10.1002/hlca.19730560540

By:

Vegh, L.;
Hardegger, E.

Publication type:

Article

Contribution à l'étude de dérivés O-β-hydroxyéthylés de la quercétine. Identification des dérivés par spectrophotométrie UV.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1604, doi. 10.1002/hlca.19730560516

By:

Courbat, Pierre;
Valenza, André

Publication type:

Article

N-Carbobenzoxy- L-pyroglutamyl- L-histidyl Peptides.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1656, doi. 10.1002/hlca.19730560522

By:

Kurath, P.;
Thomas, A. M.

Publication type:

Article

Repetitive Excess Mixed Anhydride (REMA) Synthesis of Peptides. The protected C-terminal hexadecapeptide of secretin.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1729, doi. 10.1002/hlca.19730560533

By:

van Zon, A.;
Beyerman, H. C.

Publication type:

Article

Chlorosulfates d'alkyle.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1483, doi. 10.1002/hlca.19730560504

By:

Doucet-Baudry, Mme Ginette;
Perrot, M. Roger

Publication type:

Article

The Total Synthesis of (±) β-Acorenol. Preliminary communication.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1812, doi. 10.1002/hlca.19730560544

By:

Oppolzer, Wolfgang

Publication type:

Article

The Interaction of Walsh-Orbitols in Diademane and Related Hydrocarbons.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1594, doi. 10.1002/hlca.19730560515

By:

Heilbronner, Edgar;
Gleiter, Rolf;
Hoshi, Toshihiko;
de Meijere, Armin

Publication type:

Article

Thermische Zerfallsreaktionen von Nitroverbindungen in Stosswellen. III: Dissoziation von 1-Nitropropan und 2-Nitropropan.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1691, doi. 10.1002/hlca.19730560526

By:

Glänzer, K.;
Troe, J.

Publication type:

Article

Über die Cyclialkylierung von Dimethylarylhexanolen. Vorläufige Mitteilung.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1775, doi. 10.1002/hlca.19730560537

By:

Giovannini, Edgardo;
Brandenberger, Kurt

Publication type:

Article

The Synthesis of Damascenone and β-Damascone and the possible mechanism of their formation from carotenoids.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1514, doi. 10.1002/hlca.19730560508

By:

Isoe, Sachihiko;
Katsumura, Shigeo;
Sakan, Takeo

Publication type:

Article

Mitteilungen - Communications.

Published in:: Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1828, doi. 10.1002/hlca.19730560548
Publication type:: Article

Metallbindungsphänomene: Alkoholat-Aggregate als unmittelbare Teilnehmer an Eliminierungsreaktionen.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1630, doi. 10.1002/hlca.19730560519

By:

Schlosser, Manfred;
Jan, Gérald;
Byrne, Edeline;
Sicher, Jiři

Publication type:

Article

Homopolar and Heteropolar Bond Dissociation Energies and Heats of Formation of Radicals and Ions in the Gas Phase II. The relationship between structure and bond dissociation in organic molecules.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1537, doi. 10.1002/hlca.19730560510

By:

Egger, Kurt W.;
Cocks, Alan T.

Publication type:

Article

A Novel Synthesis of 1-Aryl-9-alkyl-2, 3, 3a, 4, 9, 9a-hexahydro-1H-pyrrolo[2, 3-b] quinoxalines by lithium aluminium hydride reduction of N-phenyl-1-benzimidazolyl-succinimides.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1646, doi. 10.1002/hlca.19730560521

By:

Ahmed, Quazi;
Wagner-Jauregg, Theodor;
Pretsch, Ernst;
Seibl, Josef

Publication type:

Article

Nuclear Quadrupole Resonance and Stereochemistry III. Trichloromethyl derivatives.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1724, doi. 10.1002/hlca.19730560532

By:

Ardalan, Ziba;
Lucken, Edwin A. C.

Publication type:

Article

The Preparation of Merrifield-Resins Through Total Esterification With Cesium Salts.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1476, doi. 10.1002/hlca.19730560503

By:

Gisin, B. F.

Publication type:

Article

A New Stereoselective Approach to Substituted Pyrrolidines by Intramolecular Ene-Reactions. Preliminary communication.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1807, doi. 10.1002/hlca.19730560543

By:

Oppolzer, Wolfgang;
Pfenninger, Emil;
Keller, Kathrin

Publication type:

Article

Elektronenspinresonanz freier Radikale bei photochemischen Reaktionen von Ketonen in Lösung.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1575, doi. 10.1002/hlca.19730560514

By:

Paul, H.;
Fischer, H.

Publication type:

Article

Tieftemperaturbestrahlungen von 3-Phenyl-2 H-azirinen.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1679, doi. 10.1002/hlca.19730560525

By:

Sieber, Willi;
Gilgen, Paul;
Chaloupka, Stanislav;
Hansen, Hans-Jürgen;
Schmid, Hans

Publication type:

Article

Intramolecular Diels-Alder reactions: Construction of aza- and diaza-steroid type skeletons.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1763, doi. 10.1002/hlca.19730560536

By:

Gschwend, Heinz W.

Publication type:

Article

Modellreaktionen zur Biosynthese von Verbindungen der Damascon-Reihe und ihre präparative Anwendung.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 5, p. 1503, doi. 10.1002/hlca.19730560507

By:

Ohloff, Günther;
Rautenstrauch, Valentin;
Schulte-Elte, Karl H.

Publication type:

Article