Works matching IS 0018019X AND DT 2005 AND VI 88 AND IP 6

Results: 30

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 CycloadductsMost of the results are parts of the Ph. D. Theses by M. Ach (1992), T. Hergenrther (1992), and D. Regnat (1990), and the Diploma Thesis (1990) and unpublished results (199192) by J. Balthasar, Universitt Wrzburg.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1589

By:

Helmut Quast;
Manfred Ach;
Thomas Hergenrther;
Dieter Regnat;
Jens Lehmann;
Klaus Banert

Publication type:

Article

[2+2] Cycloaddition Reactions of Imines with Cyclic Ketenes: Synthesis of 1,3-Thiazolidine Derived Spiro--lactams and Their Transformations.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1580

By:

Giuseppe Cremonesi;
Piero Dalla 4;Croce;
Concetta La 4;Rosa

Publication type:

Article

Toward a Total Synthesis of Macrocyclic Jatrophane Diterpenes Concise Route to a Highly Functionalized Cyclopentane Key Intermediate.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1560

By:

Johann Mulzer;
Gerald Giester;
Michael Gilbert

Publication type:

Article

The Relationship of Cycloaddition Reactions to Spontaneous Vinyl Polymerizations.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1553

By:

Henry 4;K. Hall;
Anne Buyle 4;Padias

Publication type:

Article

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.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1540

By:

Susanne Glck-Walther;
Gnter Szeimies

Publication type:

Article

Tropone Is a Mere Ketone for Cycloadditions to Ketenes.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1519

By:

Junko Okamoto;
Shinichi Yamabe;
Tsutomu Minato;
Toshio Hasegawa;
Takahisa Machiguchi

Publication type:

Article

Cycloadditions of Aryl-Substituted 1,2,4-Triazines with 2-Cyclopropylidene-1,3-dimethylimidazolidine Zwitterions as Discrete Intermediates.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1491

By:

Michael Ernd;
Manfred Heuschmann;
Hendrik Zipse

Publication type:

Article

Vicinal Diamination of Terminal Olefins.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1486

By:

Hans 4;Rudolf Pfaendler;
Alexander Klingl

Publication type:

Article

New Tryptophan Metabolites from Cultures of the Lipophilic Yeast Malassezia furfur.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1472

By:

Bernhard Irlinger;
Andrea Bartsch;
Hans-Joachim Krmer;
Peter Mayser;
Wolfgang Steglich

Publication type:

Article

The Chemistry of the Thiosulfinyl Group: Preparation, Structure, and Spectroscopic and Chemical Properties of Cyclic Thionosulfites.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1451

By:

Juzo Nakayama;
Sanae Yoshida 4;(nee 4;Tanaka);
Yoshiaki Sugihara;
Akira Sakamoto

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1444

By:

Maja Raschke;
Monika Fellermeier;
Meinhart 4;H. Zenk

Publication type:

Article

Reversal of Regioselectivity of Nitrone Cycloadditions by Lewis Acids.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1432

By:

Branislav Dugovic;
Lubor Fiera;
Michal 4;K. Cyranski;
Christian Hametner;
Nada Prnayov;
Marin Obranec

Publication type:

Article

The Thermolysis of the Cycloadducts between Aryl Azides and Hexamethyl-Dewar-Benzene Revisited.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1421

By:

Manfred Christl;
Steffen Lesch;
Stephan Deuerlein;
Dietmar Stalke

Publication type:

Article

Gas-Phase Reactions of Homo- and Heteronuclear Clusters MM'+ (M, M'=Fe, Co, Ni) with Linear Alkanenitriles.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1405

By:

Maria Schlangen;
Detlef Schrder;
Helmut Schwarz

Publication type:

Article

Cycloadditions of Bifunctional Vinyl Ethers with Electrophilic Alkenes through Tetramethylene Zwitterion Intermediates.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1397

By:

Eric 4;J. May;
Anne 4;Buyle Padias;
Robert 4;B. Bates;
Henry 4;K. Hall

Publication type:

Article

Stereoselective Synthesis of Tetrahydrofuran Spiro--Lactams by Ru-Catalyzed Metathesis of 7-Oxabicyclo[2.2.1]heptenes.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1387

By:

Aurelio 4;G. Csk;
Roco Medel;
M. 4;Carmen Murcia;
Joaqun Plumet

Publication type:

Article

The Effect of Ring Size on Reactivity: The Diagnostic Value of Rate Profiles.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1375

By:

Eric Masson;
Frdric Leroux

Publication type:

Article

Catalytic Decomposition of Diazo Compounds as a Method for Generating Carbonyl-Ylide Dipoles.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1357

By:

Albert Padwa

Publication type:

Article

Synthetic Route to Ergot Alkaloids.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1344

By:

Istvn Moldvai;
Eszter Temesvri-Major;
Mria Incze;
Gbor Drnyei;
va Szentirmay;
Csaba Szntay

Publication type:

Article

Control of the Interactions in Multichromophores: Novel Concepts. Perylene Bis-imides as Components for Larger Functional Units.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1309

By:

Heinz Langhals

Publication type:

Article

Photoinduced Electron-Transfer Processes in Fullerene-Based DonorAcceptor Systems.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1291

By:

K. 4;George Thomas;
Manapurathu 4;V. George;
Prashant 4;V. Kamat

Publication type:

Article

Benzo[a]heptalenes from Heptaleno[1,2-c]furans. Part 4;I: Cycloaddition Reaction of Heptaleno[1,2-c]furans with Different Dienophiles.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1250

By:

Peter Uebelhart;
Christophe Weymuth;
Hans-Jrgen Hansen

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1240

By:

Manfred Schlosser;
Thierry Rausis

Publication type:

Article

The exo-Outstretching Effect Governing the Exclusive Stereoselectivity of the Intramolecular [2+2] Photocycloaddition of Vinylarenes.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1226

By:

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

Publication type:

Article

Trifluoromethanesulfonic Acid Catalyzed Alkylation of Arenes with Methyl (2R)-Glycidate.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1221

By:

Pablo 4;J. Linares-Palomino;
G. 4;K. 4;Surya Prakash;
George 4;A. Olah

Publication type:

Article

Fused 1,2-Dithioles. Part VII: Synthesis and Reactions of 4H-1,2-Dithiolo[4,3-c]isothiazoles.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1208

By:

Hans-Dietrich Stachel;
Barbara Zimmer;
Eduard Eckl;
Katharina Semmlinger;
Wolfgang Weigand;
Ralf Wnsch;
Peter Mayer

Publication type:

Article

Use of Trger's Base as a Scaffold for New Chiral Molecular Tweezers: Synthesis of Trimeric, Fused Trger's BasesSome preliminary results were described in T. Mas, C. Pardo, J. Elguero, Mendeleev Commun., 2004, 235.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1199

By:

Thierry Mas;
Carmen Pardo;
Jos Elguero

Publication type:

Article

Synthesis of the Cyclopentyl Nucleoside (-)-Neplanocin A from D-Glucose via Zirconocene-Mediated Ring Contraction.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1185

By:

Leo 4;A. Paquette;
Zhenjiao Tian;
Christopher 4;K. Seekamp;
Tony Wang

Publication type:

Article

Rolf Huisgen: Some Highlights of His Contributions to Organic Chemistry.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1154

By:

Christoph Rchardt;
Reiner Sustmann

Publication type:

Article

Rolf Huisgen: A Gentleman Scholar with Energy and Passion.

Published in:

Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1145

By:

Jeffrey 4;I. Seeman

Publication type:

Article