Organic Free Radicals [electronic resource] : Proceedings of the Fifth International Symposium, Zürich, 18.–23. September 1988 /

Thermal Decomposition of Indolinonic Nitroxides. A Kinetic ESR Study -- Radical Cations from Alkyliodides and 1,n-Halogen(Alkylthio)Alkanes in Solution. -- Studies of ß -Suifonyl Substituted Vinyl Nitroxides. -- Direct and Indirect Diels-Alder Additions to Electron Rich Dienophiles -- Photo-Friedel-Crafts Reaction in Synthesis of Catharanthine and its Derivatives. -- Hydroxyl Radical-Induced Strand Break Formation in Single-Stranded Polynucleotides and Single-Stranded DNA in Aqueous Solution as Measured by Light Scattering and by Conductivity. -- Cobaloxime-Mediated Radical Cross Coupling Reactions. -- Magnetic Effects in the Photochemistry of Ketones -- ESR Study of Reactive Intermediates in the Radiolysis and Photolysis of Al Alkoxides -- Rate Constants for Electron Transfer and Radical Cation Reactions of Methylated Naphthalenes. -- Cyclopentane Ring Formation in the Cycloaddition Reactions of 3-Butenyl Radical on the Electron-Deficient Olefins. -- ?-Halosulfones Reduction Mechanism: Application of Highly Efficient Radical Clocks -- Tris(Trimethylsilyl)Silane. A New Reducing Agent -- Autoxidation of (Me3 Si)3SiH -- Ti (III) Salt Mediated Radical Addition to Carbonyl Carbon. Synthesis of ?, ? — Dihydroxyketones -- Polarized EPR Spectra of Unstable Biradicals. -- Atom-Transfer Addition, Cyclization and Annulation. -- Mercuric Oxide — Iodine Oxidation of Steroidal Homoallylic Alcohols -- The Mechanisms of the Rearrangements of Allylic Hydroperoxides -- Stereoselective C-C Bond Formation in Carbohydrates by Radical Cyclization Reactions -- A Novel Reaction of Tetracyanoethylene with N-Aryl-Isoindolines -- An Electron Transfer Initiated Isomerization and Solvent Addition via Radical Cation Chain Process -- Tetramethyleneethanes: Non-Kekulé Ground State Triplets at Odds with Theory -- Hydrophobic Radical-Ions. -- Simple Synthesis of Nitroxyl Amines. -- Micellar Aggregation and the Decay of Triplet Radical Pairs -- Spin Trapping and Matrix Isolation E.S.R. Studies of Photo-Oxidation of Alcohols by Hexachlorometallate (IV) Ions (M=Pt, Pd, Ir). -- ESR of Free Radicals in Gamma Irradiated DNA-Histone Complex. -- An ESR Investigation of the Photolysis of Benzene Polycarboxylate Anions in Aqueous Solution. -- The Effect of Temperature in the Addition of Tosyl Radicals to Arylacetylenes. -- Chemical Routes to Atomic Nitrogen. -- Hydrogen Atom Abstraction from a Molybdenum Hydride: Radical Clock Studies. -- Radical Cyclization of Aldehydes: Synthetic and Mechanistic Developments. -- Radical Addition of Acetone to Limonene Initiated by KMnO4 in Acetic Acid Medium. -- Three Paramagnetic Reduction Stages of Phenyl Substituted 1,2:9,10-Dibenzo[2.2]Paracyclophanes. -- The Role of Solvent Dynamics in Inter- and Intramolecular Electron Exchange Reactions. -- On the Radicalic Methylation. Unexpected Formation of Sulfones and Sulfonamides in the Reaction of Nitrosoarenes with Fenton’s Reagent in DMSO. -- Theoretical Study on the Structure of ?-Substituted Ethyl Radicals. -- Radical Reactions for Use in Organic Synthesis -- Free and Unfree Radical Ions. -- On the Stabilization of ? — Carbon Radicals by II- and Methylthio-Substituents. -- SEESR of Radical-Ions and of Paramagnetic Complexes. -- ESR Studies of 1-Silacycloalkyl and 1-Sila-Allyl Radicals. -- Photosensitized Generation of Singlet Oxygen (1?g) in Vivo. Proposed Biomedical Applications. -- CIDNP in the Reactions of Photooxidation of Benzylic Acid and Phenols Sensitized by Uranyl Ion. -- Stereochemical Aspects of Radical Hydroxylation of Cyclohexenes in Aqueous Solution. -- Regeneration of Amine in Catalytic Inhibition of Oxidation -- EPR Spectra and Kinetics of some Carbonyloxyl Radicals, XCO2 -- The Structure of Co(II)-Corrins — ‘Nature’s Traps’ for Organic Radicals -- Aspects of Organometallic Free Radical Chemistry -- ENDOR Investigations on the Substituent Dependence of the Stabilisation of Triphenylmethyl Radicals. -- Hydrogen Atom Transfer between Ketyl Radicals and Ketones -- Formation of Dibenzodioxins and Dibenzofurans in Homogenous Gas-Phase Reactions of Phenols -- Fragmentation Patterns for Anion Radicals in Carboxylic Acids -- Unusual Transannular Radical Cyclisations -- CIDNP during the Oxidation of Tertiary Aliphatic Amines -- Charge Transfer Interaction between Menadione and Nucleic Acids. A CIDNP Study -- Grignard Reaction of Ketones. Electron and Subsequent R Transfer Processes to Ketones -- Radical Ions and Photochemical Charge Transfer Phenomena in Organic Chemistry -- Cyclisation of ?-Arylalkanols via Aryl Radical-Cation and Alkoxyl Radical Intermediates. -- The Question of Additivity of Substituent Effects on Radical Stabilisation. -- Spin Delocalisation in Heterocyclic Captodative Radicals. -- ? — Fragmentation of Alkyl Radicals. Polar and Steric Effects -- The Decay Kinetics of Triplet-Triplet Fluorescence Systems. The m-Xylylene Biradicals. -- ESR Spectroscopy of Short-Lived Radical Pairs in Solutions. -- Stereochemical Effect on Intramolecular Substitutions in Induced Decomposition of Allylic Percarbonates. -- Gas Phase Oxygenation of Benzene Derivatives with O(3P) Atoms Produced by MD of N2O. -- Annulations by Reaction of Imidoyl Radicals with Unsaturated Bonds. -- Self Electron Transfer Reactions of Hydrazines -- A Carbon-Centred Alkylphosphonate Radical Generated by Pyruvate Formate-Lyase with its Substrate Analogue Hypophosphite -- Radical Ions of Benzo[c]cinnolines and 2,3-Dihydro-1H-benzo[c]pyrazolo [1.2-?]cinnolines -- An Electron Spin Resonance Study of Some Silanone Radical Anions -- Nuclear-Electron Resonance in 31P- Containing Free Radical Solution -- Nitro Compounds as Free Radical Precursors -- Free Radicals in the Catalytic Chemistry of Hemoproteins -- Spin Trapping with Thiones -- Intramolecular Motion in Organic Free Radicals Studied by Muon Spin Rotation and Level-Crossing Spectroscopy -- Stereochemical and Regiochemical Aspects of Free Radical Macrocyclization -- Stereochemical Control in Hex-5-Enyl Radical Cyclization -- An E.S.R. Study of Aminium Radical Cations with Silyl Substituents -- The Cation-Radical of a Hindered Quinone Diazide -- Free Radical Formation by Ultrasound in Aqueous Solutions of Volatile and Non-Volatile Solutes. A Spin-Trapping Study -- Polarity Reversal Catalysis of H-Atom Abstraction Reactions in Solution -- Kinetics and Mechanism of the Oxidation Reaction of Thioethers by Cerium(IV)Ammonium Nitrate -- Nucleophilic Substitution in ?-Functionalized Tertiary Haloalkanes by Resonance Stabilized Carbanions -- Photoexcited Electron Transfer and Solvent-Dependent Path Ways of Spin Polarization and Radical Formation in Solutions with Anthraquinone -- Photochemically Generated Radicals in Industrial Applications -- Low-Field of CIDNP Manifestation of the Minor Recombination Channel via Triplet State of Radical Pairs -- Chlorine-Dioxide as an Electron Transfer Oxidant of Olefins. -- Redox-Active Iron-Chelators Based on Pyridoxal -- Two Photon Processes in Free Radical Chemistry -- Tetrahydrofurans, Pyrrolidines and Cyclopentanes by Intramolecular Cyclization of Kolbe-Radicals -- Vitamin B12, Catalyst of Radical Reactions in Organic Synthesis -- Solution Chemistry of Keto and Enol Cation Radikals -- Hydroxyl Radical and Laser Light-Induced Strand Break Formation of Polynucleotides and DNA -- Role of Nitrate Radical in the Nitrooxylation of Alkenes by Cerium(IV)Ammonium Nitrate -- Ring Inversion in Dioxine Radical Cations -- Antioxidant Systems in Biological Material. -- Cyclizing Bifunctionalization of Dienes by Sulfonyl Halides -- Radical Structure in ?-Irradiated Single Crystal of 17?-Hydroxyprogesterone. -- Enantioselective Electron Transfer during the Free Radical Chain Reduction of Ketones. -- Homosolvolysis. -- Hydrogen Transfer Activation in Radical Telomerization -- Selenium Radical Cations Promoted Functional Group Transformations -- Alternating Reactivity of Radicals Coordinated to Chelated Transition Metals or Metalloenzymes and Chemical Carcinogenesis -- Oxidation of Crowded Polyarylphosphines and Diphosphines. ESR and Electrochemical Studies. -- ESR Technique in a 2mm Range of Wavelengths and its Physico-Chemical Applications -- Cytochrome P450 Catalyzed Cage Radical Reactions -- Single-Electron-Transfer (SET) Leading to Radical Species in the Redox Reactions of Cyclic Peroxides with Biological Substrates -- Chain Transfer Mechanism in the Radical Telomerization Involving the Bromine Containing Polyhalomethanes -- Free Radical Production from the Triplet State of Nalidixic Acid. -- New Procedures of Homolytic Alkylation of Heteroaromatic Bases: Synthesis of C-Nucleosides -- Polymer-Bound Pyrylium Salts -- Stabilisation and Stereodynamics of Free Radicals -- Electrochemistry of Free Radicals: Substituent Effects on the Redox Potentials of Benzyl Radicals -- Dissociation and Ion-Molecule Reactions of Alkane Radical Cations. Time-Resolved FDMR -- ENDOR of Metalloproteins at X-Band and Q-Band Microwave Frequencies -- Why Bromine is Used in the Autoxidation of P-Xylene to Terephthalic Acid -- Author Index.

Bibliographic Details

Main Authors:	Fischer, Hanns. editor., Heimgartner, Heinz. editor., SpringerLink (Online service)
Format:	Texto biblioteca
Language:	eng
Published:	Berlin, Heidelberg : Springer Berlin Heidelberg, 1988
Subjects:	Chemistry., Organic chemistry., Physical chemistry., Organic Chemistry., Physical Chemistry.,
Online Access:	http://dx.doi.org/10.1007/978-3-642-73963-7
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