Helvetica chimica acta

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  Año 2005, Vol. 88, Número 7

  • Water and the Huisgen Cycloaddition Reaction: A Focus on Polar Contributions to the Transition State in the Reactions of Dicyano(phthalazinium)methanide with Substituted Styrenes and Benzylidene Acetones

    R. N. Butler, W. J. Cunningham, A. G. Coyne

    págs. 1611-1629

    

  • Novel Sulfonamide Derivatives as Inhibitors of Histone Deacetylase

    P. W. Finn, M. Bandara, C. Butcher

    págs. 1630-1657

    

  • Ring Opening of 1-Azabicyclo[1.1.0]butanes with Hydrazoic Acid - a Facile Access to N-Unsubstituted Azetidin-3-Amines

    G. Mloston, M. Celeda

    págs. 1658-1663

    

  • The Preparation of 1,2,3-Trisubstituted Guanidines

    Alan R. Katritzky

    págs. 1664-1675

    

  • New Synthesis of Pyrrolidines via Reaction of gamma-Halocarbonions with Imines

    M. Makosza

    págs. 1676-1681

    

  • Xanthone Receptors as Oxyanion-Hole Mimics in Artificial Enzymes

    F. M. Muniz, L. Simon

    págs. 1682-1701

    

  • Activation Energies and Reaction Energetics for 1,3-Dipolar Cycloadditions of Hydrazoic Acid with C-C and C-N Multiple Bonds from High-Accuracy and Density Functional Quantum Mechanical Calculations

    G. O. Jones

    págs. 1702-1710

    

  • Application of the `Direct Amide Cyclization' to Peptides Containing an Anthranilic Acid Residue

    I. Philipova

    págs. 1711-1733

    

  • Multicomponent Strecker Reaction under High Pressure

    K. Matsumoto

    págs. 1734-1753

    

  • Quantification of the beta-Stabilizing Effect of the Dicarbonyl(eta^5-cyclopentadienyl)iron Group

    F. Dulich, K.-H. Muller

    págs. 1754-1768

    

  • Stereoselective Cyclopropanation of 2-[(S)-(4-Methylphenyl)sulfinyl]cyclopent-2-en-1-one with Sulfur Ylides and alpha-Halo Carbanions Preliminary Communication

    M. Mikolajczyk

    págs. 1769-1775

    

  • Process-Scale Total Synthesis of Nature-Identical (-)-(S,S)-7-Hydroxycalamenal in High Enantiomeric Purity through Catalytic Enantioselective Hydrogenation

    T. Benincori

    págs. 1776-1789

    

  • Basicity of Phenyl- and Methyl-Substituted 1,2,4-Oxadiazoles

    R. E. Trifonov, A. P. Volovodenko

    págs. 1790-1797

    

  • A Novel Coupling 1,3-Dipolar Cycloaddition Sequence as a Three-Component Approach to Highly Fluorescent Indolizines

    A. V. Rotaru, I. D. Druta

    págs. 1798-1812

    

  • 1,3-Dipolar Cycloaddition Reactions of Organic Azides with Morpholinobuta-1,3-dienes and with an alpha-Ethynyl-enamine

    M. Brunner

    págs. 1813-1825

    

  • Syntheses of Enantiomerically Pure 2-Substituted Pyrrolidin-3-ones via Lithiated Alkoxyallenes - An Auxiliary-Based Synthesis of both Enantiomers of the Antibiotic Anisomycin

    S. Kaden, H.-U. Reissig, M. Brockmann

    págs. 1826-1838

    

  • Oligoporphyrin Arrays Conjugated to [60]Fullerene: Preparation, NMR Analysis, and Photophysical and Electrochemical Properties

    N. Armaroli, G. Accorsi, D. Bonifazi

    págs. 1839-1884

    

  • Functionalised Bicyclic exo-Glycals by Alkynol Cycloisomerisation of Hydroxy 1,3-Diynes and Hydroxy Haloalkynes

    Z. Miao

    págs. 1885-1912

    

  • Fluorinated Diazo Diketones in Rhodium(II)-Catalyzed Reactions with Sultams: Chemoselective O-Functionalization of Amide Carbonyl Groups

    V. M. Zakharova

    págs. 1913-1921

    

  • Light-Induced Cycloaddition of 2,3-Dihydro-2,2-dimethyl-4H-thiopyran-4-one (a 4-Thiacyclohex-2-enone) to Alkenes and Dienes

    K. Schmidt

    págs. 1922-1930

    

  • Solid-State NMR Study of the Tautomerism of Acetylacetone Included in a Host Matrix

    Rosa María Claramunt Vallespí

    págs. 1931-1942

    

  • Synthesis of the 2-Alkenyl-4-alkylidenebut-2-eno-4-lactone (=alpha-Alkenyl-gamma-alkylidene-butenolide) Core Structure of the Carotenoid Pyrrhoxanthin via the Regioselective Dihydroxylation of Hepta-2,4-diene-5-ynoic Acid Esters

    J. Schmidt-Leithoff

    págs. 1943-1959

    

  • Tautomerism in 5,8-Diaza-7,9-dicarbaguanine (`Alloguanine')

    R. Krishnamurthy, T. Wagner

    págs. 1960-1968

    

  • NMR-Solution Structures in Methanol of an alpha-Heptapeptide, of a beta^3/beta^2-Nonapeptide, and of an all-beta^3-Icosapeptide Carrying the 20 Proteinogenic Side Chains

    R. I. Mathad, D. Seebach, Y. R. Mahajan, P. Bindschadler, T. Kimmerlin

    págs. 1969-1982

    

  • Palladium-Catalyzed Amination of 3,5-Dihalopyridines - a Convenient Route to New Polyazamacrocycles

    A. D. Averin, O. A. Ulanovskaya

    págs. 1983-2002

    

  • Cycloaddition Reactions of 7-Benzylidenecycloocta-1,3,5-triene with Ethenetetracarbonitrile and 4-Phenyl-3H-1,2,4-triazole-3,5(4H)-dione

    P. Clements, P. K. Kirkbride, G. E. Gream

    págs. 2003-2021

    

  • First [4+2] Cycloadditions Involving the Olefinic Bond of an `Aldoketeniminium Salt' (=N-Alk-1-enylideneaminium Salt)

    F. Mahuteau-Betzer

    págs. 2022-2031