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List of works by Waldemar Adam

1,3-Cyclopentanediyl Diradicals: Substituent and Temperature Dependence of Triplet−Singlet Intersystem Crossing

scientific article published in 1999

2'-Deoxyguanosine (DG) oxidation and strand-break formation in DNA by the radicals released in the photolysis of N-tert-butoxy-2-pyridone. Are tert-butoxyl or methyl radicals responsible for the photooxidative damage in aqueous media?

scientific article published on 01 January 2002

4-Halo-4H-pyrazoles: Cycloaddition with Cyclopentadiene to Azoalkanes of the 2,3-Diazabicyclo[2.2.1]hept-2-ene Type versus Electrophilic Addition with Cyclopentene

A Comparative Photomechanistic Study (Spin Trapping, EPR Spectroscopy, Transient Kinetics, Photoproducts) of Nucleoside Oxidation (dG and 8-oxodG) by Triplet-Excited Acetophenones and by the Radicals Generated from α-Oxy-Substituted Derivatives thro

scientific article published on 01 April 2002

A Comparative Study on the Diastereofacial Control in the [4+2] Cycloaddition of Sorbates and the Ene Reaction of Tiglates with Singlet Oxygen and PTAD by a Variety of Chiral Auxiliaries

A density-functional study of the mechanism for the diastereoselective epoxidation of chiral allylic alcohols by the titanium peroxy complexes

scientific article published in March 2002

A highly chemoselective, diastereoselective, and regioselective epoxidation of chiral allylic alcohols with hydrogen peroxide, catalyzed by sandwich-type polyoxometalates: enhancement of reactivity and control of selectivity by the hydroxy group thr

scientific article published in March 2003

A supramolecular "ship in bottle" strategy for enantiomeric selectivity in geminate radical pair recombination

scientific article published on 01 June 2003

Additivity of the Electronic Meta-Substituent Effect in 3,5-Disubstituted Cumyl Radicals Assessed by the EPR D Parameter of 1,3-Arylcyclopentane-1,3-diyl Triplet Diradicals ⬇️

scientific article published on October 17, 1997

Asymmetric Synthesis with the EnzymeCoprinusPeroxidase: Kinetic Resolution of Chiral Hydroperoxides and Enantioselective Sulfoxidation ⬇️

scientific article published on June 25, 1999

Asymmetric Weitz−Scheffer Epoxidation of Isoflavones with Hydroperoxides Mediated by Optically Active Phase-Transfer Catalysts ⬇️

scientific article published on January 11, 2002

Biologisches Licht

Bis(trimethylsilyl) monoperoxysulfate: convenient Bayer-Villiger oxidant

Carbon-Carbon Bond Cleavage of the [2.2]Paracyclophane Radical Cation Generated by Electron Transfer Oxidation with Cerium(IV) Ammonium Nitrate

Cerium(IV)-Catalyzed Single Electron Transfer(SET) on Acenaphthene and 1,4-Dihydronaphtho-[1,8-d,e][1,2]diazepine: Chemical Evidence for Distinct Radical Cations

article

Charge-Transfer-Induced Photoreduction of Azoalkanes by Amines

scientific article published in 1997

Chiral hydroperoxides as oxygen source in the catalytic stereoselective epoxidation of allylic alcohols by sandwich-type polyoxometalates: control of enantioselectivity through a metal-coordinated template

scientific article published in October 2003

Chiral-auxiliary-controlled diastereoselectivity in the epoxidation of enecarbamates with DMD and mCPBA

scientific article published on 01 March 2003

Computational study on the origin of the stereoselectivity for the photochemical denitrogenation of diazabicycloheptene

scientific article published in September 2003

Control of chirality by cations in confined spaces: Photooxidation of enecarbamates inside zeolite supercages

scientific article published in January 2006

Control of regioselectivity by the lone substituent through steric and electronic effects in the nitrosoarene ene reaction of deuterium-labeled trisubstituted alkenes

scientific article

Control of the mode selectivity (ene reaction versus [2 + 2] cycloaddition) in the photooxygenation of ene carbamates: directing effect of an alkenylic nitrogen functionality

scientific article published on 01 November 2002

Convergence of the perturbation theory expansion for spin-spin coupling constants

Correlation of Oxidation and Ionization Potentials for Azoalkanes

Counterion Effects in the Nucleophilic Substitution Reaction of the Acetate Ion with Alkyl Bromides in the Synthesis of Esters

Cytotoxicity and genotoxicity induced by the photochemical alkoxyl radical source N-tert-butoxypyridine-2-thione in L5178Y mouse lymphoma cells under UVA irradiation

scientific article published in August 2005

Dark singlet oxygenation of organic substrates in single-phase and multiphase microemulsion systems

Decoding stereocontrol during the photooxygenation of oxazolidinone-functionalized enecarbamates

scientific article published in May 2010

Diastereoselective Catalytic Epoxidation of Chiral Allylic Alcohols by the TS-1 and Ti-β Zeolites: Evidence for a Hydrogen-Bonded, Peroxy-Type Loaded Complex as Oxidizing Species

Diastereoselective epoxidation of allylic alcohols with hydrogen peroxide catalyzed by titanium-containing zeolites or methyltrioxorhenium versus stoichiometric oxidation with dimethyldioxirane: Clues on the active species in the zeolite lattice

Dioxirane Epoxidation of 10-Membered-Ring Stilbene Lactams as Synthetic Precursors to Protoberberines

scientific article published on 01 February 1999

Direct Synthesis of Isothiocyanates from Isonitriles by Molybdenum-Catalyzed Sulfur Transfer with Elemental Sulfur

Direct Thioepoxidation of Strained Cyclic Alkenes by the Photolytic Sulfur-Atom Transfer from Thiocarbonyl S-Oxides (Sulfines) ⬇️

scientific article published on October 17, 1997

Direct episulfidation of alkenes and allenes with elemental sulfur and thiiranes as sulfur sources, catalyzed by molybdenum oxo complexes

scientific article published in April 2003

Direct synthesis of isothiocyanates from isonitriles by molybdenum-catalyzed sulfur transfer with elemental sulfur

scientific article published in October 2002

EPR Characterization of the Quintet State for a Hydrocarbon Tetraradical with Two Localized 1,3-Cyclopentanediyl Biradicals Linked bymeta-Phenylene as a Ferromagnetic Coupler†

scientific article published in 1996

Effect of Donor-Acceptor Substitution on Intersystem Crossing Rates of 1,3-Diaryl-1,3-cyclopentanediyl Triplet Biradicals

scientific article published in 1995

Effect of additives on chemoselectivity and diastereoselectivity in the catalytic epoxidation of chiral allylic alcohols with hydrogen peroxide and binuclear manganese complexes

scientific article published in February 2009

Effects of spiroconjugation on the calculated singlet-triplet energy gap in 2,2-dialkoxycyclopentane-1,3-diyls and on the experimental electronic absorption spectra of singlet 1,3-diphenyl derivatives. Assignment of the lowest-energy electronic tran

scientific article

Effects of symmetrical diaryl substitution on intersystem crossing in 1,3-cyclopentanediyl triplet biradicals

scientific article published in 1993

Efficient pi-facial control in the ene reaction of nitrosoarene, triazolinedione, and singlet oxygen with tiglic amides of the bornane-derived sultam as chiral auxiliary: an economical synthesis of enantiomerically pure nitrogen- and oxygen-function

scientific article published in November 2002

Electron Exchange Luminescence of Spiroadamantane-Substituted Dioxetanes Triggered by Alkaline Phosphatase. Kinetics and Elucidation of pH Effects

scientific article published in 1996

Electronic Effects ofpara- andmeta-Substituents on the EPRDParameter in 1,3-Arylcyclopentane-1,3-diyl Triplet Diradicals. A New Spectroscopic Measure of α Spin Densities and Radical Stabilization Energies in Benzyl-Type Monoradicals

Electronic Substituent Effects on the Acid-Catalyzed [4+ + 2] Cycloaddition of Isopyrazoles with Cyclopentadiene and the Photochemical and Thermal Denitrogenation of the Resulting 1,4-Diaryl-7,7-dimethyl-2,3-diazabicyclo[2.2.1]hept-2-ene Azoalkanes t

Ene reaction of singlet oxygen, triazolinedione, and nitrosoarene with chiral deuterium-labeled allylic alcohols: the interdependence of diastereoselectivity and regioselectivity discloses mechanistic insights into the hydroxy-group directivity.

scientific article

Enecarbamates as selective substrates in oxidations: chiral-auxiliary-controlled mode selectivity and diastereoselectivity in the [2+2] cycloaddition and ene reaction of singlet oxygen and in the epoxidation by DMD and mCPBA.

scientific article published in March 2004

Epoxidation and Oxygen Insertion Into Alkane Ch Bonds by Dioxirane Do Not Involve Detectable Radical Pathways

Fine-Tuning and Recycling of Homogeneous Tungstate and Polytungstate Epoxidation Catalysts

Fluorescence quenching of azoalkanes by solvent-assisted radiationless deactivation involving CH bonds

Generation of 4,5-Diazacyclopentane-1,3-diyl Radical Cations by Chemical Electron Transfer (CET) Oxidation of Urazole-Bridged Bicyclic Housanes (Bicyclo[2.1.0]pentanes) and Their Chemical Transformations ⬇️

scientific article published on 01 May 1996

Generation of the 1,4-diphenylcyclohexane-1,4-diyl radical cation by CeIV-catalysed denitrogenation of the azoalkane 1,4-diphenyl-2,3-diazabicyclo[2.2.2]oct-2-ene and its reluctance to undergo Cope rearrangement

Highly diastereoselective dioxetane formation in the photooxygenation of enecarbamates with an oxazolidinone chiral auxiliary: steric control in the [2 + 2] cycloaddition of singlet oxygen through conformational alignment

scientific article

Highly efficient catalytic asymmetric epoxidation of allylic alcohols by an oxovanadium-substituted polyoxometalate with a regenerative TADDOL-derived hydroperoxide

scientific article published on 01 March 2003

Horseradish Peroxidase-Catalyzed Enantioselective Reduction of Racemic Hydroperoxy Homoallylic Alcohols: A Novel Enzymatic Method for the Preparation of Optically Active, Unsaturated Diols and Hydroperoxy Alcohols

scientific article published on 01 September 1998

Identification of a remarkably long-lived azoalkane triplet state

scientific article published in 1993

Influence of Bridgehead Substitution and Ring Annelation on the Photophysical Properties of Polycyclic DBO-Type Azoalkanes ⬇️

scientific article published on May 14, 1999

Influence of hydroperoxides on the enantioselectivity of metal-catalyzed asymmetric Baeyer–Villiger oxidation and epoxidation with chiral ligands

Inorganic compounds and materials as catalysts for oxidations with aqueous hydrogen peroxide

Intramolecular and Intermolecular Reactivity of Localized Singlet Diradicals: The Exceedingly Long-Lived 2,2-Diethoxy-1,3-diphenylcyclopentane-1,3-diyl

article published in 2000

Intramolecular and intermolecular kinetic isotope effects (KIE) in the nitrosoarene ene reaction: experimental evidence for reversible intermediate formation

scientific article published in March 2003

Kinetic resolution of racemic halohydrins, precursors of optically active di- and trialkyl-substituted epoxides, with lipase from Pseudomonas sp

Lanthanide-Catalyzed Oxidative С–O Coupling of 1,3-Dicarbonyl Compounds with Diacyl Peroxides

Lewis acid catalyzed sulfur transfer from a sultene to strained cyclic alkenes

scientific article published on 01 February 2002

Luminescent Materials

Mechanism of an alcohol-trapping reaction in the direct and benzophenone-sensitized photodenitrogenation of a spiroepoxy-substituted azoalkane: solvent effects and stereochemical deuterium labeling

scientific article published in March 2003

Observation of azo chromophore fluorescence and phosphorescence emissions from DBH by applying exclusively the orbital confinement effect in siliceous zeolites devoid of charge-balancing cations

scientific article

On the chemiluminescence in the oxidation of tetravalent uranium to the uranyl ion by dimethyldioxirane.

scientific article published in September 2002

On the electronic character of localized singlet 2,2-dimethoxycyclopentane-1,3-diyl diradicals: substituent effects on the lifetime

scientific article published in June 2002

One-Pot Synthesis of α-Trimethylsilyl Enones from Vinylsilanes

Opposite enantioselectivities of two phenotypically and genotypically similar strains of Pseudomonas frederiksbergensis in bacterial whole-cell sulfoxidation

scientific article

Organo Sulfonic Peracids. 4.1 The Reaction of Arenesulfonylimidazoles with H2O2 in the Presence of Ketones. A New Entry to Dioxiranes ⬇️

scientific article published on January 10, 1997

Oxidation of Thioether Ligands in Pseudotetrahedral Cyclopentadienylruthenium Complexes: Toward a New Stereoselective Synthesis of Chiral Sulfoxides1

scientific article published on 01 May 1997

Oxidation of acetals, an orthoester, and ethers by dioxiranes through α-CH insertion

Oxidative DNA Damage by Radicals Generated in the Thermolysis of Hydroxymethyl-Substituted 1,2-Dioxetanes through the α Cleavage of Chemiexcited Ketones

scientific article published in 1998

Oxygen and Structural Effects on Silicalite29Si Spin−Lattice Relaxation Studied by High-Resolution29Si Solid-State NMR

Phosphorescence and Transient Absorption of Azoalkane Triplet States

scientific article published in 1995

Photobiological model studies on perester and pyridone tert-butoxyl radical sources (photo-Fenton-type reagents): 2'-deoxyguanosine modification by methyl radicals generated through competitive beta-cleavage in aqueous media

scientific article published in August 2002

Photochemical Generation and Methanol Trapping of Localized 1,3 and 1,4 Singlet Diradicals Derived from a Spiroepoxy-Substituted Cyclopentane-1,3-diyl

scientific article published in 1998

Photochemical and Chemical Electron Transfer Reactions of Bicyclo[2.1.0]pentanes (Housanes) in Solution and in Zeolite Cavities

scientific article published in 1996

Photochemical versus thermal skeletal inversion: viscosity-controlled photodenitrogenation of a bridgehead-substituted DBH-type azoalkane and thermal syn-to-anti housane isomerization

scientific article

Photochemistry of N-isopropoxy-substituted 2(1H)-pyridone and 4-p-tolylthiazole-2(3H)-thione: alkoxyl-radical release (spin-trapping, EPR, and transient spectroscopy) and its significance in the photooxidative induction of DNA strand breaks

scientific article

Photochromic dibenzobarrlenes: long-lived triplet biradical intermediates

scientific article published on 11 July 2007

Photohemolysis Sensitized by the Furocoumarin Derivative Alloimperatorin and its Hydroperoxide Photooxidation Product

scientific article published on 10 October 2013

Photooxygenation of allylic alcohols: kinetic comparison of unfunctionalized alkenes with prenol-type allylic alcohols, ethers and acetates ⬇️

scientific article published on August 1, 2003

Photoreduction of Azoalkane Triplet States by Hydrogen Atom and Charge Transfer

scientific article published on 01 December 1996

Photoreduction of Azoalkanes by Direct Hydrogen Abstraction from 1,4-Cyclohexadiene, Alcohols, Stannanes, and Silanes

scientific article published on 01 November 1997

Probing for Electronic and Steric Effects in the Peracid Oxidation of Thianthrene 5-Oxide ⬇️

scientific article published on January 10, 1997

Radical Stabilization and Ground State Polar Substituent Effects in the Thermal Decomposition of Azoalkanes

scientific article published in 1994

Reactivity, chemoselectivity, and diastereoselectivity of the oxyfunctionalization of chiral allylic alcohols and derivatives in microemulsions: comparison of the chemical oxidation by the hydrogen peroxide/sodium molybdate system with the photooxyg

scientific article

Rearrangement of annelated housanes to triquinane-like hydrocarbons by electron transfer (1,3-cyclopentanediyl radical cations) and acid catalysis (cyclopentyl carbenium ions).

scientific article published in January 2002

Regio- and Diastereoselective Catalytic Epoxidation of Acyclic Allylic Alcohols with Methyltrioxorhenium: A Mechanistic Comparison with Metal (Peroxy and Peroxo Complexes) and Nonmetal (Peracids and Dioxirane) Oxidants ⬇️

scientific article published on May 14, 1999

Regioselective Synthesis of Isoquino[1,2-b][3]benzazepines (Homoprotoberberines) through 11-Membered-Ring Stilbene Lactams Obtained by Radical Macrocyclization

scientific article published on 01 June 1999

Relative reactivity of peracids versus dioxiranes (DMDO and TFDO) in the epoxidation of alkenes. A combined experimental and theoretical analysis

scientific article published on January 2003

Semisynthetic Enzymes in Asymmetric Synthesis: Enantioselective Reduction of Racemic Hydroperoxides Catalyzed by Seleno-Subtilisin ⬇️

scientific article published on 01 February 1999

Singlet Oxygen Production from Excited Azoalkanes

article

Singlet-oxygen generation in the catalytic reaction of dioxiranes with nucleophilic anions

scientific article published on 21 October 2003

Solvent Effect on Product Distribution in Photochemical Pathways of α C−N versus β C−C Cleavage of n,π* Triplet-Excited Azoalkanes

scientific article published in 1997

Spin delocalization by triple-bonded functionalities in propargyl and heteropropargyl radicals, assessed from the EPR-spectral D parameter of 1,3-cyclopentanediyl triplet diradicals

scientific article

Spin delocalization in 1-heteroallyl monoradicals as a measure of radical stabilization by heterovinyl substituents assessed through the EPR-spectral zero-field D parameter of 1,3-cyclopentanediyl triplet diradicals

scientific article

Spiroiminodihydantoin Is a Major Product in the Photooxidation of 2‘-Deoxyguanosine by the Triplet States and Oxyl Radicals Generated from Hydroxyacetophenone Photolysis and Dioxetane Thermolysis

scientific article published on 01 February 2002

Stereochemical Memory versus Curtin−Hammett Behavior in the Rearrangement of 1,3-Cyclopentanediyl Radical Cations Derived from Housanes through Structural Effects on Conformational Control ⬇️

scientific article published on May 14, 2003

Stereochemical features of the physical and chemical interactions of singlet oxygen with enecarbamates.

scientific article published in December 2003

Stereochemical memory in the regioselective and diastereoselective rearrangement of tricyclo[3.3.0.0 2,4]octanes (housanes) by electron transfer (1,3-cyclopentanediyl radical cations) and acid (cyclopentyl carbenium ions) and silver-ion catalysis

scientific article published in January 2003

Stereochemical memory in the temperature-dependent photodenitrogenation of bridgehead-substituted DBH-type azoalkanes: inhibition of inverted-housane formation in the diazenyl diradical through the mass effect (inertia) and steric hindrance

scientific article published in October 2002

Stereocontrol within confined spaces: enantioselective photooxidation of enecarbamates inside zeolite supercages

scientific article published in September 2004

Studies on cytotoxic and genotoxic effects of N-hydroxypyridine-2-thione (Omadine) in L5178Y mouse lymphoma cells

scientific article published in November 2002

Substituent Effects on the Zero-Field Splitting Parameters of Localized Triplet, 1,3-Cyclopentanediyl Biradicals

Synthesis of Optically Active α-Hydroxy Carbonyl Compounds by the Catalytic, Enantioselective Oxidation of Silyl Enol Ethers and Ketene Acetals with (Salen)manganese(III) Complexes

scientific article published in 1998

Synthesis of optically active α-hydroxy ketones by enantioselective oxidation of silyl enol ethers with a fructose-derived dioxirane

scientific article (publication date: February 1998)

Synthesis of thiiranes by direct sulfur transfer: the challenge of developing effective sulfur donors and metal catalysts

scientific article published on 01 January 2004

Temperature Dependence of the .alpha. versus .beta. Bond Cleavage in the Direct and Triplet-Sensitized Photolysis of Azoalkanes of the 2,3-Diazabicyclo[2.2.1]hept-2-ene Type

scientific article published in 1994

Temperature and solvent control of the stereoselectivity in the reactions of singlet oxygen with oxazolidinone-substituted enecarbamates

scientific article

The 185-nm photochemistry of cyclobutene and bicyclo[1.1.0]butane

scientific article published in 1985

The D parameter (zero-field splitting) as a direct measure of structural end electronic effects in localized triplet 1,3-diradicals

The EPR-Spectral D Parameter of Photochemically Generated Cyclopentane-1,3-diyl Triplet Diradicals as a Quantitative Measure of Spin Delocalization in Vinyl-, Phenyl-, and Carbonyl-Substituted Radicals ⬇️

scientific article published on May 14, 1999

The Mechanism of the Double Bond Cleavage in the Titanium Zeolite-catalyzed Oxidation of α-Methylstyrene by Hydrogen Peroxide: the β-Hydroperoxy Alcohol as Intermediate

The Nitroso Ene Reaction: A Regioselective and Stereoselective Allylic Nitrogen Functionalization of Mechanistic Delight and Synthetic Potential ⬇️

scientific article published on October 1, 2003

TheDParameter (EPR Zero-Field Splitting) of Localized 1,3-Cyclopentanediyl Triplet Diradicals as a Measure of Electronic Substituent Effects on the Spin Densities inPara-Substituted Benzyl-Type Radicals

scientific article published on 01 October 1996

Theoretical Study of the 1,2 Rearrangement of Housane Radical Cations: Key Role of a Transient Cyclopentane-1,3-diyl Intermediate

scientific article published in 1999

Thermal and photochemical reactions of bicyclic azoalkanes in concentrated sulfuric acid

Thionin-sensitized intrazeolite photooxygenation of trisubstituted alkenes: substituent effects on the regioselectivity as probed through isotopic labeling

scientific article published in December 2002

Titanium-Catalyzed Diastereoselective Epoxidations of Ene Diols and Allylic Alcohols with β-Hydroperoxy Alcohols as Novel Oxygen Donors ⬇️

scientific article published on May 16, 1997

Titanium-Catalyzed Heterogeneous Oxidations of Silanes, Chiral Allylic Alcohols, 3-Alkylcyclohexanes, and Thianthrene 5-Oxide: A Comparison of the Reactivities and Selectivities for the Large-Pore Zeolite Ti-β, the Mesoporous Ti-MCM-41, and the Laye

Transient Spectroscopy of a Derivative of 2,2-Difluoro-1,3-diphenylcyclopentane-1,3-diylA Persistent Localized Singlet 1,3-Diradical

scientific article published in January 1998

Unusual sulfur chemistry in the thermal reaction of sultene and thiophene endoperoxide sulfur donors with cyclic alkynes: reversible formation of a persistent thiirenium ion and trapping of a thiirene by [4 + 2] cycloaddition

scientific article published in July 2002

Unusual temperature dependence in the cis/trans-oxetane formation discloses competitive syn versus anti attack for the Paternò-Büchi reaction of triplet-excited ketones with cis- and trans-cylooctenes. Conformational control of diastereoselectivity

scientific article published on 01 April 2002

Viscosity as an experimental tool in studying the mechanism of stereoselective and product-selective chemical transformations through frictional impositions

scientific article published in August 2003

Viscosity dependence of the denitrogenation quantum yield in azoalkane photolysis: experimental evidence for reversible formation of the diazenyl diradical

scientific article published on 01 November 2002

Viscosity-controlled, product-selective rearrangement of the cyclopentane-1,3-diyl radical cation derived from an annelated housane by electron transfer: a case of Curtin-Hammett behavior

scientific article published in October 2002

Viscosity-dependent diastereoselectivity and product selectivity in the photodenitrogenation of a spirocyclopropane-substituted, DBH-type azoalkane

scientific article

cis-Stilbene and (1 alpha,2 beta,3 alpha)-(2-ethenyl-3-methoxycyclopropyl)benzene as mechanistic probes in the Mn(III)(salen)-catalyzed epoxidation: influence of the oxygen source and the counterion on the diastereoselectivity of the competitive con

scientific article published in May 2002

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