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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 D. Theses by M. Ach (1992), T. Hergenrther (1992), and D. Regnat (1990), and the Diploma Thesis (1990) and unpublished results (199192) by J. Balthasar, Universitt Wrzburg.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1589
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- Article
[2+2] Cycloaddition Reactions of Imines with Cyclic Ketenes: Synthesis of 1,3-Thiazolidine Derived Spiro--lactams and Their Transformations.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1580
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- Article
Toward a Total Synthesis of Macrocyclic Jatrophane Diterpenes Concise Route to a Highly Functionalized Cyclopentane Key Intermediate.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1560
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- Article
The Relationship of Cycloaddition Reactions to Spontaneous Vinyl Polymerizations.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1553
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- Article
Reversal of Regioselectivity of Nitrone Cycloadditions by Lewis Acids.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1432
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- Article
Stereoselective Synthesis of Tetrahydrofuran Spiro--Lactams by Ru-Catalyzed Metathesis of 7-Oxabicyclo[2.2.1]heptenes.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1387
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- Article
Catalytic Decomposition of Diazo Compounds as a Method for Generating Carbonyl-Ylide Dipoles.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1357
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- Article
Synthetic Route to Ergot Alkaloids.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1344
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- Article
The Effect of Ring Size on Reactivity: The Diagnostic Value of Rate Profiles.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1375
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- 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.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1540
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- Article
Tropone Is a Mere Ketone for Cycloadditions to Ketenes.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1519
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- Article
Cycloadditions of Aryl-Substituted 1,2,4-Triazines with 2-Cyclopropylidene-1,3-dimethylimidazolidine Zwitterions as Discrete Intermediates.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1491
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- Article
Vicinal Diamination of Terminal Olefins.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1486
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- Article
New Tryptophan Metabolites from Cultures of the Lipophilic Yeast Malassezia furfur.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1472
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- Article
The Chemistry of the Thiosulfinyl Group: Preparation, Structure, and Spectroscopic and Chemical Properties of Cyclic Thionosulfites.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1451
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- Article
A Facile Cell Free Synthesis of Isotopically Labeled (E)-4-Hydroxy-3-methylbut-2-enyl Diphosphate, a Precursor of the Plant Hormone Zeatin.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1444
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- Article
The Thermolysis of the Cycloadducts between Aryl Azides and Hexamethyl-Dewar-Benzene Revisited.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1421
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- Article
Control of the Interactions in Multichromophores: Novel Concepts. Perylene Bis-imides as Components for Larger Functional Units.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1309
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- Article
Gas-Phase Reactions of Homo- and Heteronuclear Clusters MM'+ (M, M'=Fe, Co, Ni) with Linear Alkanenitriles.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1405
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- Article
Cycloadditions of Bifunctional Vinyl Ethers with Electrophilic Alkenes through Tetramethylene Zwitterion Intermediates.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1397
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- Article
Photoinduced Electron-Transfer Processes in Fullerene-Based DonorAcceptor Systems.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1291
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- Article
Benzo[a]heptalenes from Heptaleno[1,2-c]furans. Part 4;I: Cycloaddition Reaction of Heptaleno[1,2-c]furans with Different Dienophiles.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1250
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- Article
Rolf Huisgen: A Gentleman Scholar with Energy and Passion.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1145
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- Article
The Reactivity of 2-Fluoro- and 2-Chloropyridines toward Sodium Ethoxide: Factors Governing the Rates of Nucleophilic (Het)Aromatic Substitutions.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1240
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- Article
The exo-Outstretching Effect Governing the Exclusive Stereoselectivity of the Intramolecular [2+2] Photocycloaddition of Vinylarenes.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1226
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- Article
Trifluoromethanesulfonic Acid Catalyzed Alkylation of Arenes with Methyl (2R)-Glycidate.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1221
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- Article
Fused 1,2-Dithioles. Part VII: Synthesis and Reactions of 4H-1,2-Dithiolo[4,3-c]isothiazoles.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1208
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- 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.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1199
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- Article
Synthesis of the Cyclopentyl Nucleoside (-)-Neplanocin A from D-Glucose via Zirconocene-Mediated Ring Contraction.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1185
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- Article
Rolf Huisgen: Some Highlights of His Contributions to Organic Chemistry.
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- Helvetica Chimica Acta, 2005, v. 88, n. 6, p. 1154
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- Article