Viehe / Janousek / Merényi Substituent Effects in Radical Chemistry

1986
ISBN: 978-94-009-4758-0
Verlag: Springer Netherland
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, Band 189, 482 Seiten, eBook

Reihe: Nato Science Series C:

Zielgruppe

Research

Autoren/Hrsg.

Viehe, Heinz G.

Janousek, Zdenek

Merényi, Robert

Inhaltsverzeichnis

1. A Theoretical Approach to Substituent Effects in radical Chemistry.- 2. Sigma and Pi Effects in Radicals.- 3. The Contrasting Strain Energies of Small Ring Carbon and Silicon Rings. The Relationship with Free Radical Energies.- 4. Allylic and Allenic Capto-dative Stabilization in Nitrogen Centered Free Radicals.- 5. Conformational Preferences in Beta Substituted Ethyl Radicals A Quantitative Analysis of Hyperconjugation, Homoconjugation, d-Orbital and Steric Effects.- 6. Substituent Effects on the Thermochemistry and Electrochemistry of Free Radicals.- 7. Some Applications of ES? Spectroscopy to the Study of Substituent Effects.- 8. Substituent Effects on Absolute Rate Constants and Arrhenius Parameters for the Addition of tert-Butyl Radicals to Alkenes.- 9. Allylic Radicals—An ESR Spectroscopical Study.- 10. ESR-Spectroscopical Investigation of Capto-dative Substituent Effects in Benzyl Radicals.- 11. The Effect of Substituents on Benzylic Radical ESR Hyperfine Coupling Constants. The ?? Scale Based Upon Spin Delocalization.- 12. Determination of Thermodynamic Stabilisation in Amino-Substituted Alkyl radicals.- 13. Phosphinylhydrazyls R2 NNP(O)L2. Influence of the Phosphinyl Group on the 3-Electron NN Pi Bond.- 14. Substituent Effects on the Dimerization of Vinyl Nitroxides and on the Dissociation of Their Tricyclic Dimers.- 15. Substituent Effects on the CC-Bond Strength.- 16. The Different Recombinations of Diphenyl Methyl Radicals Ph2 C°-R, R = tBu, CN, COOR’, COR’.- 17. Some Chemistry of Radical Ions.- 18. Substituent Effects on the Methylenecyclopropane Rearrangement. A Probe for Free Radical Effects.- 19. 2-Oxomorpholin-3-yl Radicals.- 20. Azoalkane Decompositions as Measures of Radical Substituent Effects.- 21. Orbital Effects in CarbohydrateRadicals.- 22. ESR-Spectroscopical Investigation of Carbohydrate Radicals in Solution. Radical Stabilization by Beta C-0 Bonds.- 23. Studies on the Captodative’ Effect. Entropy/Enthalpy Compensation as Solvent Effect in Radical Forming Reactions. A relative Radical Stabilisation Scale.- 24. ?° Revisited.- 25. Captodative Effect on the relative Rates of H-Abstraction by Tert-Butoxy Radicals.- 26. Substituent Effects in Gas-Phase Thermal Hydroxylation and Hydrogenolysis.- 27. Heterocyclic Substituents in SRNl Reactions.- 28. Substituent Effects on the Oxidation of Toluenes by Molecular Oxygen: The Surprising Reactivity of p-Methoxytoluene.- 29. Free Radical Additions of Dichloromethahe to ?-Alkenyl t-Butyl Peroxides.- 30. The Non-Chain Radicaloid Mechanism of Some Nucleophilic Substitution Reactions.- 31. Captodative Substituent Effects in Cycloaddition Reactions.- 32. Captodative Substitution Effect in [2+2] Cycloadditions Between Alienes and Olefins.- 33. Captodative Alkenes as Dipolarophiles—Kinetic Studies.- 34. Captodative Alkenes in Concerted 1, 3-Dipolar Cycloadditions.- 35. Photo-Diels-Alder Addition of Two Captodative Alkenes to 1-Acetonaphtone.- 36. Free Radical Cyclization of Unsaturated Carbonic acid Derivatives.- 37. Synthetic Applications of the Polar Effects of the Substituents in Free-Radical Reactions.- 38. Selectivity in Homolytic Aromatic Substitutions. Alkylations of Pyridines.- 39. The Invention of High-Yielding Radical Chain Reactions.- 40. Epilogue.- Participants.