Works matching IS 0018019X AND DT 1973 AND VI 56 AND IP 8

Results: 48

Photochemische Reaktionen. 75. Mitteilung. Die UV.-Bestrahlung von 3β-Acetoxy-18-dimethoxy-20-oxo-Δ16-5α-pregnen.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2698, doi. 10.1002/hlca.19730560804

By:

Marti, Franz;
Wehrli, Hansuli;
Jeger, Oskar

Publication type:

Article

α-Chlor-nitrone VI: Ag+-induzierte Reaktion mit Acetylen-derivaten. Eine neue Bildungsweise von α,β-ungesättigten Carbonylsystemen Über synthetische Methoden, 10. (vorläufige) Mitteilung.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2975, doi. 10.1002/hlca.19730560837

By:

Shatzmiller, Shimon;
Eschenmoser, Albert

Publication type:

Article

Umwandlung von 6-Methylen-tricyclo[3.2.1.02,7]oct-3-en-8-onen in Polymethyltropyliumsalze.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2796, doi. 10.1002/hlca.19730560815

By:

Peter-Katalinić, Jasna;
Zsindely, Janos;
Schmid, Hans

Publication type:

Article

Über Pterinchemie. 45. Mitteilung. Eine neue und eindeutige Synthese isomerenfreier Pteroyl-λ-L-glutamyl-L-glutaminsäure.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2911, doi. 10.1002/hlca.19730560830

By:

Khalifa, Esam;
Bieri, Jost H.;
Viscontini, Max

Publication type:

Article

Masthead.

Published in:: Helvetica Chimica Acta, 1973, v. 56, n. 8, p. fmi, doi. 10.1002/hlca.19730560801
Publication type:: Article

Sur les dérivés de la fluorénone VII. Bifluorényles et bifluorénonyles.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 3044, doi. 10.1002/hlca.19730560841

By:

Chardonnens, Louis;
De Blasi, Vito;
Rotzetter, Armand

Publication type:

Article

Chemistry of Succinylsuccinic Acid Derivatives. Part II. The crystal and molecular structure of diethyl succinylsuccinate.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2766, doi. 10.1002/hlca.19730560812

By:

Mez, Hans-Christian;
Rihs, Gret

Publication type:

Article

Synthèse de sucres ramifiés et de sucres aminés ramifiés. Communication préliminaire.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2879, doi. 10.1002/hlca.19730560823

By:

Bourgeois, Jean-Marc

Publication type:

Article

The Mode of Incorporation of Farnesyl Pyrophosphate into Verrucarol. Preliminary communication.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2946, doi. 10.1002/hlca.19730560834

By:

Arigoni, Duilio;
Cane, David E.;
Müller, Beat;
Tamm, Christoph

Publication type:

Article

Kinetische Untersuchung der durch Imidazol katalysierten Acylübertragung von Thioestern auf Cyanessigester, einer Modellreaktion zur enzymatischen Knüpfung von C, C-Bindungen.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 3059, doi. 10.1002/hlca.19730560845

By:

Wenck, Helmut;
Schallies, Michael

Publication type:

Article

The MO-theoretical Description of Optical Properties in Polymers. Selection rules due to cyclic symmetry.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2706, doi. 10.1002/hlca.19730560805

By:

Wagnière, G.;
Geiger, R.

Publication type:

Article

Nachweis von π → σ-Umlagerungen bei Ligandenverdrängungsreaktionen von π-Allyl-π-cyclopentadienyl-Palladiumkomplexen.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2819, doi. 10.1002/hlca.19730560816

By:

Parker, Graham;
Werner, Helmut

Publication type:

Article

Absolute Konfiguration von β,ε-Carotin-2-ol, β,β-Carotin-2-ol und β,β-Carotin-2,2′-diol.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2899, doi. 10.1002/hlca.19730560827

By:

Buchecker, Richard;
Eugster, Conrad Hans;
Kjøsen, Helge;
Liaaen-Jensen, SynnøVe

Publication type:

Article

Die durch Silberionen katalysierte Umlagerung von Propargyl-phenyläther.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2981, doi. 10.1002/hlca.19730560838

By:

Koch-Pomeranz, Ursula;
Hansen, Hans-Jürgen;
Schmid, Hans

Publication type:

Article

Nucleophilic Reactions at Tertiary Carbon. Part 2. σ- and π-routes to the 8-hydrindanyl cation.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2733, doi. 10.1002/hlca.19730560809

By:

Becker, Konrad B.;
Boschung, André F.;
Grob, Cyril A.

Publication type:

Article

Sur les dérivés de la fluorénone VI Les acides bromo-3-fluorénonecarboxylique-2 et bromo-2-fluorénonecarboxylique-3 et la bromo-3-méthyl-4-fluorénone.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 3039, doi. 10.1002/hlca.19730560840

By:

Chardonnens, Louis;
Horváth, Ernö

Publication type:

Article

On the Correlation between Ionization Potentials and Excitation Energies, part III: Pyrazine.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2889, doi. 10.1002/hlca.19730560826

By:

Haselbach, Edwin;
Lanyiova, Zuzanna;
Rossi, Michel

Publication type:

Article

Radiolyse des hydrocarbures. 21e communication. Mécanismes radicalaires et non-radicalaires dans les n-alcanes en phase liquide.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2861, doi. 10.1002/hlca.19730560822

By:

Rappoport, Serge;
Gäumann, Tino

Publication type:

Article

Chemistry of Succinylsuccinic Acid Derivatives. Part I. On the photodimerization of diethyl succinylsuccinate.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2760, doi. 10.1002/hlca.19730560811

By:

Sinnreich, Joel;
Batzer, Hans

Publication type:

Article

Aromatische [1,5s]-sigmatropische H-Verschiebungen in Arylallenen.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2924, doi. 10.1002/hlca.19730560833

By:

Heimgartner, Heinz;
Zsindely, Janos;
Hansen, Hans-Jürgen;
Schmid, Hans

Publication type:

Article

Acetolysis of 4- endo-diazoacetyl-bicyclo[3.1.0]hexene: a new synthesis of semibullvalene. Preliminary communication.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2845, doi. 10.1002/hlca.19730560819

By:

Malherbe, Roger

Publication type:

Article

The Formation of Cyclic Ethers by Intramolecular Addition and Substitution Processes in the Reaction of Olefinic Alcohols with Lead Tetraacetate. Part I. Preliminary communication.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 3056, doi. 10.1002/hlca.19730560844

By:

Mihailović, Mihailo Lj.;
Čeković, Živorad;
Stanković, Jezdimir;
Pavlović, Nebojša;
Konstantinović, Stanimir;
Djokić-Mazinjanin, Silvija

Publication type:

Article

Nucleophilic Reactions at Tertiary Carbon. Part 3. σ- and π-routes to the 9-decalyl cation.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2747, doi. 10.1002/hlca.19730560810

By:

Becker, Konrad B.;
Boschung, André F.;
Geisel, Manfred;
Grob, Cyril A.

Publication type:

Article

Nucleophilic Reactions at Tertiary Carbon. Part 1. The 1,2-dimethyl-1-cyclohexyl cation.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2723, doi. 10.1002/hlca.19730560808

By:

Becker, Konrad B.;
Grob, Cyril A.

Publication type:

Article

Errata.

Published in:: Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 3139, doi. 10.1002/hlca.19730560848
Publication type:: Article

De la chimie des ptérines. 47e communication. Une confirmation de l'existence de dihydroptérines quinoïdiques: formation d'amino-2-alloxane pendant l'oxydation de tétrahydroptérines.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2920, doi. 10.1002/hlca.19730560832

By:

Argentini, Mario;
Viscontini, Max

Publication type:

Article

Zur Photochemie von Δ1,9-10-Methyl-2-octalon.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2884, doi. 10.1002/hlca.19730560825

By:

Margaretha, Paul;
Schaffner, Kurt

Publication type:

Article

α-Chlor-nitrone V: Substitutionsreaktionen an Olefin- und Benzolderivaten. Eine Methode zur Darstellung von β,γ-un-gesättigten und β- arylsubstituierten Aldehyden. Stereospezifische Bildung von tetra-alkylsubstituierten Olefindoppelbindungen. Über synthetische Methoden, 9. (vorläufige) Mitteilung

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2961, doi. 10.1002/hlca.19730560836

By:

Shatzmiller, Shimon;
Gygax, Peter;
Hall, David;
Eschenmoser, Albert

Publication type:

Article

Eine neue Synthese des 3-[3,4-Dihydroxy-phenyl]-L-alanins (L-DOPA) aus L-Tyrosin.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2857, doi. 10.1002/hlca.19730560821

By:

Bretschneider, Hermann;
Hohenlohe-Oehringen, Kraft;
Kaiser, Ado;
Wölcke, Uwe

Publication type:

Article

Heterotricyclodecanes XVII. 2,7-Dioxa-twist-4-ene and 2,7-dioxa-twista-4,9-diene.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 3054, doi. 10.1002/hlca.19730560843

By:

Ackermann, Peter;
Ganter, Camille

Publication type:

Article

Isolierung und Konstitutionsermittlung von Chrysodin.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2694, doi. 10.1002/hlca.19730560803

By:

Closse, Annemarie;
Hauser, Daniel

Publication type:

Article

3-Amino-3-desoxyverbindungen von Uzarigenin, Oleandrigenin, Gitoxigenin und Digoxigenin. Partialsynthetische Versuche in der Reihe der Herzgifte, 6. Mitt.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2782, doi. 10.1002/hlca.19730560814

By:

Hauser, Emil;
Boffo, Ursula;
Meister, Lotte;
Sawlewicz, Ludwika;
Linde, Horst H. A.;
Meyer, Kuno

Publication type:

Article

Chemistry of Succinylsuccinic Acid Derivatives. Part III. The Crystal and Molecular Structure of anti-Tricyclo[4.4.01,6.07,12]-1,4,7,10-tetraethoxycarbonyl-3,6,9,12-tetrahydroxy-dodeca-3,9-diene, C24H32O12, a Photodimer of Diethyl Succinylsuccinate

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2772, doi. 10.1002/hlca.19730560813

By:

Mez, Hans-Christian;
Rihs, Greti

Publication type:

Article

α-Chlor-nitrone IV: Zur Stereochemie der λ-Lacton-Synthese und eine Methode zum Aufbau von α-Methyliden-λ-lactonen aus Olefinen. Über synthetische Methoden, 8. (vorläufige) Mitteilung.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2950, doi. 10.1002/hlca.19730560835

By:

Petrzilka, Martin;
Felix, Dorothee;
Eschenmoser, Albert

Publication type:

Article

Die Isolierung weiterer Alkaloide aus Pleiocarba talbotii W ERNHAM. 150. Mitteilung über Alkaloide.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2719, doi. 10.1002/hlca.19730560807

By:

Pinar, Mariano;
Hesse, Manfred;
Schmid, Hans

Publication type:

Article

The Stereoselectivity of Ketone Reduction with Sporotrichum Exile. Resolution of cis- and trans-2-benzoyloctahydro-6(2 H)-isoquinolones.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2834, doi. 10.1002/hlca.19730560818

By:

Uskoković, M. R.;
Pruess, D. L.;
Despreaux, C. W.;
Shiuey, S.;
Pizzolato, G.;
Gutzwiller, J.

Publication type:

Article

Mitteilungen - Communications.

Published in:: Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 3072, doi. 10.1002/hlca.19730560847
Publication type:: Article

Über die Hydrolyse von Eisen(III)Salzlösungen. I. Die Hydrolyse der Lösungen von Eisen(III)chlorid.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2847, doi. 10.1002/hlca.19730560820

By:

Feitknecht, Walter;
Giovanoli, Rudolf;
Michaelis, Werner;
Müller, Max

Publication type:

Article

Über Pterinchemie. 44. Mitteilung. Eine eindeutige Synthese isomerenfreier Folsäure.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2905, doi. 10.1002/hlca.19730560829

By:

Bieri, Jost H.;
Viscontini, Max

Publication type:

Article

Über Pterinchemie. 46., vorläufige Mitteilung. Identifizierung von substituierten Tetrahydropterinen durch Gas-Chromatographie und Massenspektrometrie.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2919, doi. 10.1002/hlca.19730560831

By:

Weber, Rudolf;
Frick, Willi;
Viscontini, Max

Publication type:

Article

Amino-nucléosides IV (Amino-3-désoxy-3-érythrofurannosyl)-9-adénine.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2689, doi. 10.1002/hlca.19730560802

By:

Tronchet, Jean M. J.;
Graf, René

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2711, doi. 10.1002/hlca.19730560806

By:

Tadanier, Jack;
Kurath, Paul;
Martin, Jerry R.;
McAlpine, James B.;
Egan, Richard S.;
Goldstein, Alma W.;
Mueller, Sandra L.;
Dunnigan, Daniel A.

Publication type:

Article

Contribution à la phytochimie du genre Gentiana III. Etude des composés flavoniques et xanthoniques dans les feuilles de Gentiana lutea L. (2me communication).

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 3050, doi. 10.1002/hlca.19730560842

By:

Hostettmann, Kurt;
Bellmann, Günter;
Tabacchi, Raphaël;
Jacot-Guillarmod, André

Publication type:

Article

Stereospecific Synthesis of a 9, 11, 12, 13, 13a, 14-hexahydro-dibenzo( f, h)pyrrolo(1,2- b)isoquinoline-alkaloid. Preliminary communication.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2882, doi. 10.1002/hlca.19730560824

By:

Faber, Ludwig;
Wiegrebe, Wolfgang

Publication type:

Article

Erratum.

Published in:: Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 3072, doi. 10.1002/hlca.19730560846
Publication type:: Article

[4+2]-Cycloadditionen von 1,2-Dicyanocyclobuten und seine thermische Ringöffnung zum 2,3-Dicyanobutadien-1,3.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 3004, doi. 10.1002/hlca.19730560839

By:

Belluš, Daniel;
Bredow, Klaus Von;
Sauter, Hanspeter;
Weis, Claus D.

Publication type:

Article

Isolierung und Strukturaufklärung von 11-Desacetoxy-wortmannin.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2901, doi. 10.1002/hlca.19730560828

By:

Haefliger, Walter;
Hauser, Daniel

Publication type:

Article

Partialsynthese von Bufarenogin und Argentinogenin. Über Bufadienolide, 42. Mitteilung.

Published in:

Helvetica Chimica Acta, 1973, v. 56, n. 8, p. 2827, doi. 10.1002/hlca.19730560817

By:

Spengel, Sigrid;
Linde, Horst H. A.;
Meyer, Kuno

Publication type:

Article