Works matching IS 0018019X AND DT 1981 AND VI 64 AND IP 8
Results: 49
Mechanistic Implications of the Tetrameric Cubic Structure of Lithium Enolates.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2622, doi. 10.1002/hlca.19810640820
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Dediazoniation of Arenediazonium Ions. Part XIX. Effect of thiocyanate ion in the reactions of 2,4,6-trimethylbenzenediazonium tetrafluoroborate in 2,2,2-trifluoroethanol.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2721, doi. 10.1002/hlca.19810640831
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Enamines. II. A theoretical and photoelectron spectroscopic study of the molecular and electronic structures of aliphatic enamines.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2497, doi. 10.1002/hlca.19810640802
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High Asymmetric Induction in Conjugate Additions of RCu · BF<sub>3</sub> to Chiral Enoates. Preliminary communication.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2808, doi. 10.1002/hlca.19810640842
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Umlagerung von α-Halogen- in α′-Halogen-cyclobutanone, Schlüsselstufe einer variationsreichen Synthese von Pyrethroiden.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2571, doi. 10.1002/hlca.19810640813
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<sup>13</sup>C-NMR. Spectral Differences between Corresponding Methyl Esters, Phenyl Esters and 2-Substituted Chromones.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2654, doi. 10.1002/hlca.19810640824
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Contribution à la phytochimie du genre Gentiana. XXVI.. Identification d'une nouvelle di- O-glucosyl cinnamoyl- C-glucosylflavone extraite des feuilles de Gentiana X marcailhouana R Y.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2741, doi. 10.1002/hlca.19810640835
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Synthetic Methods and Reactions. Part 106. Suppression of anchimerically assisted rearrangement products in the synthesis of α-fluorocarboxylic acids from α-amino acids with 48:52 (w/w) hydrogen fluoride/pyridine [1].
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2528, doi. 10.1002/hlca.19810640806
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Inductive and Polarizability Effects of an Exocyclic Diene-Iron Tricarbonyl Group. The acetolyses of exo- and endo-irontricarbonyl complexes of 5,6-dimethylidene-2- exo-norbornyl and 2,3-dimethylidene-7- anti-norbornyl parabromobenzenesulfonates.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2841, doi. 10.1002/hlca.19810640846
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Low Temperature Grignard Reactions with Pure Mg Slurries. Trapping of cyclopropylmethyl and benzocyclobutenylmethyl Grignard reagents with CO<sub>2</sub>.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2606, doi. 10.1002/hlca.19810640817
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Action de nucléophiles simples sur un bromoénurononitrile, précurseur et équivalent synthétique partiel d'un ynurononitrile.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2696, doi. 10.1002/hlca.19810640828
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The mass spectra of organic compounds. 6th Communication.. The Ring Opening Reaction of Isomeric Cyclanones C<sub>8</sub>H<sub>14</sub>O \documentclass{article}\pagestyle{empty}\begin{document}$ 1^{+ \atop \dot{}} $\end{document}.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2782, doi. 10.1002/hlca.19810640839
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Die Synthese von 6-substituierten 2-Norbornanolen. Norbornane, 7. Mitteilung.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2709, doi. 10.1002/hlca.19810640830
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Masthead.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. fmi, doi. 10.1002/hlca.19810640801
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Asymmetric induction in Diels- Alder reactions to acrylates derived from chiral sec-alcohols. Preliminary communication.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2802, doi. 10.1002/hlca.19810640841
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Synthesis and Diels-Alder Reactivity of 2,3,5,6-Tetramethylidenenorbornane.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2563, doi. 10.1002/hlca.19810640812
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Synthesis and biological properties of p-azidophenylalanine<sup>13</sup>-β-melanotropin, a potent photoaffinity label for MSH receptors.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2645, doi. 10.1002/hlca.19810640823
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The Radicals and Radical Dianions of Bridged [11]- and [15]Annulenyls as Compared with Those of Benzotropyl and 2,3-Naphthotropyl.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2766, doi. 10.1002/hlca.19810640838
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Activated C,H-Acids: N-Alkyl-9-fluorenimines. Preliminary communication.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2524, doi. 10.1002/hlca.19810640805
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Photodimerization of Solid Pleiadiene; Isomerization and Cycloreversion of the Dimer.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2830, doi. 10.1002/hlca.19810640845
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Photochemical Reactions. 125<sup>th</sup> communication [1]. Photochemistry of homoconjugated cyclobutanones. I. Synthesis and photolysis of a Spiro [3.6]deca-5, 7-dien-1-one.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2598, doi. 10.1002/hlca.19810640816
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Synthese von (−)-(5 R,6 S)-5,6-Epoxy-5,6-dihydro-β-ionon.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2691, doi. 10.1002/hlca.19810640827
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Crystallographic and Spectroscopic Evidence for an Intramolecular (OH ... π)-Interaction.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2738, doi. 10.1002/hlca.19810640834
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Structure-Activity Relationship of Oxygenated Morphinans. V. Narcotic agonist and antagonist activity in the 14-hydroxymorphinan series. Preliminary communication.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2540, doi. 10.1002/hlca.19810640809
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Mitteilungen.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2861, doi. 10.1002/hlca.19810640849
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<sup>1</sup>H- und <sup>13</sup>C-NMR.-Spektroskopie der Nonadride.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2791, doi. 10.1002/hlca.19810640840
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Tasmanin, ein neues Indolalkaloid aus Aristotelia peduncularis (L ABILL.) H OOK. F. 181. Mitteilung über organische Naturstoffe.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2555, doi. 10.1002/hlca.19810640811
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Methylthiofurane: Herstellung und Reaktionen.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2636, doi. 10.1002/hlca.19810640822
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Secondary Deuterium Isotope Effect in an Electrophilic Aromatic Substitution - Protodesilylation of Trimethylphenylsilane.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2733, doi. 10.1002/hlca.19810640833
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Nucleosides and Nucleotides. Part 18. p-nitrobenzenesulfonyl nitroimidazole as a new condensing agent in the triester synthesis of oligonucleotides.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2515, doi. 10.1002/hlca.19810640804
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Relationship between Molecular Properties and Conformation of Chiral Alkanes.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2821, doi. 10.1002/hlca.19810640844
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A Convergent Synthesis of (±)-α- and β-Himachalenes.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2592, doi. 10.1002/hlca.19810640815
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Synthese und Chiralität der enantiomeren 6-Hydroxy-α-ionone sowie von cis- und trans-5,6-Dihydroxy-5,6-dihydro-β-iononen.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2681, doi. 10.1002/hlca.19810640826
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Nafion-TMS- and TMS-Trifluoroacetate-Induced Rearrangements of Cyclopropyl Ketones - A procedure for the regioselective conversion of semibullvalenes to barrelenes.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2759, doi. 10.1002/hlca.19810640837
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The Hydroperoxidation of Olefins by Singlet Oxygen. Validity of the zwitterionic peroxide model.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2534, doi. 10.1002/hlca.19810640808
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Errata.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2860, doi. 10.1002/hlca.19810640848
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Tetrameric Cubic Structures of Two Solvated Lithium Enolates.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2617, doi. 10.1002/hlca.19810640819
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Kreuzkonjugierte Cyanine und Merocyanine aus Salzen 1-substituierter 2,3-Dimethylchinoxaline. 1. Mitteilung. Über die Isolierung der Farbbasen nach spontaner Umwandlung und nach Oxydation der Reaktanten mit Kupfer(II)acetat oder Silberoxid.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2665, doi. 10.1002/hlca.19810640825
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Crystal structure and electrical conductivity of nickel 6, 13-di ( p-tolyl)-5, 14-dihydrodibenzo [ b, i]-1,4,8,11-tetraaza [14]annulene Iodide (Ni (dtdbtaa)I<sub>2.58</sub>).
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2544, doi. 10.1002/hlca.19810640810
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Dediazoniation of Arenediazonium Ions. Part XX. Secondary deuterium isotope effects in reactions of benzenediazonium tetrafluoroborate.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2728, doi. 10.1002/hlca.19810640832
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Enamines. III. A theoretical and photoelectron spectroscopic study of the molecular and electronic structures of aziridine enamines.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2508, doi. 10.1002/hlca.19810640803
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Synthesen von (1 R)- cis-3-(2′,2′-Dihalovinyl)-2, 2-dimethylcyclopropan-carbonsäuren via Favorskii-Umlagerung von optisch aktiven Cyclobutanonen.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2812, doi. 10.1002/hlca.19810640843
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Synthesis of L-α-aminoadipyl- L-serinyl- D-valine, a naturally occuring tripeptide from the fermentation of Penicillium chrysogenum.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2587, doi. 10.1002/hlca.19810640814
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Über Pterinchemie. 79. Mitteilung. <sup>13</sup>C-und <sup>15</sup>N-NMR.-spektroskopische Untersuchungen an der (6RS)-5, 10-Methylen-5, 6, 7, 8-tetrahydro- L-folsäure; eindeutiger Beweis ihrer Struktur.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2627, doi. 10.1002/hlca.19810640821
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Trennung und Charakterisierung von β-Carotin-Isomeren.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2746, doi. 10.1002/hlca.19810640836
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Ru-Catalyzed Oxidation of Acetylenes to α-Diketones with Iodosylbenzene.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2531, doi. 10.1002/hlca.19810640807
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Synthesis and Absolute Configuration of New Trichloro Steroids with Cyclopropane-Containing Side Chains.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2853, doi. 10.1002/hlca.19810640847
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Correct Structure of a Condensation Product C<sub>6</sub>H<sub>12</sub>N<sub>4</sub>O<sub>4</sub> from Hydrazine, Formaldehyde and Hydrogen Peroxide.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2614, doi. 10.1002/hlca.19810640818
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Enantioselective Generation and Diastereoselective Reactions of Chiral Enolates Derived from α-Heterosubstituted Carboxylic Acids. Preliminary Communication.
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- Helvetica Chimica Acta, 1981, v. 64, n. 8, p. 2704, doi. 10.1002/hlca.19810640829
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