Helvetica Chimica Acta

Copyright © 2013 Verlag Helvetica Chimica Acta AG, Zürich, Switzerland

Cover image for Helvetica Chimica Acta

June 2005

Volume 88, Issue 6

Pages 1145–1609

    1. Contents: HCA 6/2005

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590127

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      Rolf Huisgen: A Gentleman Scholar with Energy and Passion (pages 1145–1153)

      Jeffrey I. Seeman

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590097

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      Rolf Huisgen: Some Highlights of His Contributions to Organic Chemistry (pages 1154–1184)

      Christoph Rüchardt, Jürgen Sauer and Reiner Sustmann

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590098

    4. Synthesis of the Cyclopentyl Nucleoside (−)-Neplanocin A from D-Glucose via Zirconocene-Mediated Ring Contraction (pages 1185–1198)

      Leo A. Paquette, Zhenjiao Tian, Christopher K. Seekamp and Tony Wang

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590099

    5. Use of Tröger's Base as a Scaffold for New Chiral Molecular Tweezers: Synthesis of Trimeric, Fused Tröger's Bases (pages 1199–1207)

      Thierry Mas, Carmen Pardo and José Elguero

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590100

    6. Fused 1,2-Dithioles. Part VII : Synthesis and Reactions of 4H-1,2-Dithiolo[4,3-c]isothiazoles (pages 1208–1220)

      Hans-Dietrich Stachel, Barbara Zimmer, Eduard Eckl, Katharina Semmlinger, Wolfgang Weigand, Ralf Wünsch and Peter Mayer

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590101

    7. Trifluoromethanesulfonic Acid Catalyzed Alkylation of Arenes with Methyl (2R)-Glycidate (pages 1221–1225)

      Pablo J. Linares-Palomino, G. K. Surya Prakash and George A. Olah

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590102

    8. The exo-Outstretching Effect Governing the Exclusive Stereoselectivity of the Intramolecular [2+2] Photocycloaddition of Vinylarenes (pages 1226–1239)

      Jun Nishimura, Takashi Funaki, Noriaki Saito, Seiichi Inokuma, Yosuke Nakamura, So Tajima, Toshitada Yoshihara and Seiji Tobita

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590103

    9. The Reactivity of 2-Fluoro- and 2-Chloropyridines toward Sodium Ethoxide: Factors Governing the Rates of Nucleophilic (Het)Aromatic Substitutions (pages 1240–1249)

      Manfred Schlosser and Thierry Rausis

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590104

    10. Benzo[a]heptalenes from Heptaleno[1,2-c]furans. Part I : Cycloaddition Reaction of Heptaleno[1,2-c]furans with Different Dienophiles (pages 1250–1290)

      Peter Uebelhart, Christophe Weymuth and Hans-Jürgen Hansen

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590105

    11. Photoinduced Electron-Transfer Processes in Fullerene-Based Donor–Acceptor Systems (pages 1291–1308)

      K. George Thomas, Manapurathu V. George and Prashant V. Kamat

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590106

    12. Control of the Interactions in Multichromophores: Novel Concepts. Perylene Bis-imides as Components for Larger Functional Units (pages 1309–1343)

      Heinz Langhals

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590107

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      Synthetic Route to Ergot Alkaloids (pages 1344–1356)

      István Moldvai, Eszter Temesvári-Major, Mária Incze, Gábor Dörnyei, Éva Szentirmay and Csaba Szántay

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590108

    14. Catalytic Decomposition of Diazo Compounds as a Method for Generating Carbonyl-Ylide Dipoles (pages 1357–1374)

      Albert Padwa

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590109

    15. The Effect of Ring Size on Reactivity: The Diagnostic Value of ‘Rate Profiles’ (pages 1375–1386)

      Eric Masson and Frédéric Leroux

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590110

    16. Stereoselective Synthesis of Tetrahydrofuran Spiro-β-Lactams by Ru-Catalyzed Metathesis of 7-Oxabicyclo[2.2.1]heptenes (pages 1387–1396)

      Aurelio G. Csákÿ, Rocío Medel, M. Carmen Murcia and Joaquín Plumet

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590111

    17. Cycloadditions of Bifunctional Vinyl Ethers with Electrophilic Alkenes through Tetramethylene Zwitterion Intermediates (pages 1397–1404)

      Eric J. May, Anne Buyle Padias, Robert B. Bates and Henry K. Hall Jr.

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590112

    18. Gas-Phase Reactions of Homo- and Heteronuclear Clusters MM′+ (M, M′=Fe, Co, Ni) with Linear Alkanenitriles (pages 1405–1420)

      Maria Schlangen, Detlef Schröder and Helmut Schwarz

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590113

    19. The Thermolysis of the Cycloadducts between Aryl Azides and Hexamethyl-Dewar-Benzene Revisited (pages 1421–1431)

      Manfred Christl, Steffen Lesch, Stephan Deuerlein and Dietmar Stalke

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590114

    20. Reversal of Regioselectivity of Nitrone Cycloadditions by Lewis Acids (pages 1432–1443)

      Branislav Dugovič, Lubor Fišera, Michal K. Cyranski, Christian Hametner, Nada Prónayová and Marián Obranec

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590115

    21. A Facile Cell Free Synthesis of Isotopically Labeled (E)-4-Hydroxy-3-methylbut-2-enyl Diphosphate, a Precursor of the Plant Hormone Zeatin (pages 1444–1450)

      Maja Raschke, Monika Fellermeier and Meinhart H. Zenk

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590116

    22. The Chemistry of the Thiosulfinyl Group: Preparation, Structure, and Spectroscopic and Chemical Properties of Cyclic Thionosulfites (pages 1451–1471)

      Juzo Nakayama, Sanae Yoshida (nee Tanaka), Yoshiaki Sugihara and Akira Sakamoto

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590117

    23. New Tryptophan Metabolites from Cultures of the Lipophilic Yeast Malassezia furfur (pages 1472–1485)

      Bernhard Irlinger, Andrea Bartsch, Hans-Joachim Krämer, Peter Mayser and Wolfgang Steglich

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590118

    24. Vicinal Diamination of Terminal Olefins (pages 1486–1490)

      Hans Rudolf Pfaendler and Alexander Klingl

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590119

    25. Cycloadditions of Aryl-Substituted 1,2,4-Triazines with 2-Cyclopropylidene-1,3-dimethylimidazolidine – Zwitterions as Discrete Intermediates (pages 1491–1518)

      Michael Ernd, Manfred Heuschmann and Hendrik Zipse

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590120

    26. Tropone Is a Mere Ketone for Cycloadditions to Ketenes (pages 1519–1539)

      Junko Okamoto, Shinichi Yamabe, Tsutomu Minato, Toshio Hasegawa and Takahisa Machiguchi

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590121

    27. Thermal Isomerization of 12-Oxa-1,9-dimetylhexacyclo[7.2.1.02,4.02,8.03,7.06,8]dodec-10-ene: A Computational Mechanistic Investigation (pages 1540–1552)

      Susanne Glück-Walther and Günter Szeimies

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590122

    28. The Relationship of Cycloaddition Reactions to Spontaneous Vinyl Polymerizations (pages 1553–1559)

      Henry K. Hall Jr. and Anne Buyle Padias

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590123

    29. Toward a Total Synthesis of Macrocyclic Jatrophane Diterpenes – Concise Route to a Highly Functionalized Cyclopentane Key Intermediate (pages 1560–1579)

      Johann Mulzer, Gerald Giester and Michael Gilbert

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590124

    30. [2+2] Cycloaddition Reactions of Imines with Cyclic Ketenes: Synthesis of 1,3-Thiazolidine Derived Spiro-β-lactams and Their Transformations (pages 1580–1588)

      Giuseppe Cremonesi, Piero Dalla Croce and Concetta La Rosa

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590125

    31. Exploring the Border between Concerted and Two-Step Pathways of 1,3-Dipolar Cycloadditions of Organic Azides to Cyclic Ketene N,X-Acetals. – Synthesis and 15N-NMR Spectra of Zwitterions and Spirocyclic Cycloadducts (pages 1589–1609)

      Helmut Quast, Manfred Ach, Jürgen Balthasar, Thomas Hergenröther, Dieter Regnat, Jens Lehmann and Klaus Banert

      Article first published online: 21 JUN 2005 | DOI: 10.1002/hlca.200590126

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