The Conservation of Orbital Symmetry

An Extended Hückel Theory. I. Hydrocarbons

1963 • 4,551 citations

Application of the pople-santry-segal CNDO method to the cyclopropylcarbinyl and cyclobutyl cation and to bicyclobutane

1968 • 4,189 citations

1,3‐Dipolar Cycloadditions. Past and Future

1963 • 2,689 citations

Modern quantum chemistry

1966 • 2,558 citations

A Molecular Orbital Theory of Reactivity in Aromatic Hydrocarbons

1952 • 2,046 citations

Molecular Orbital Theory for Organic Chemists

1962 • 1,691 citations

Stereochemistry of Electrocyclic Reactions

1965 • 1,311 citations

1.3‐Dipolare Cycloadditionen Rückschau und Ausblick

1963 • 1,278 citations

The Molecular Orbital Theory of Organic Chemistry

1970 • 977 citations

Theory of Polyhedral Molecules. I. Physical Factorizations of the Secular Equation

1962 • 938 citations

Molecular Orbitals in Chemistry Physics and Biology

1965 • 774 citations

The molecular orbital theory of conjugated systems

1967 • 750 citations

Molecular Orbital Theory of Orientation in Aromatic, Heteroaromatic, and Other Conjugated Molecules

1954 • 693 citations

Fundamentals of Carbanion Chemistry

1965 • 643 citations

Selection Rules for Concerted Cycloaddition Reactions

1965 • 593 citations

The Interpretation of Band Spectra Part III. Electron Quantum Numbers and States of Molecules and Their Atoms

1932 • 538 citations

Intermolecular orbital theory of the interaction between conjugated systems. I. General theory

1968 • 531 citations

Boron Hydrides: LCAO—MO and Resonance Studies

1962 • 463 citations

Trimethylene and the addition of methylene to ethylene

1968 • 427 citations

Selection Rules for Sigmatropic Reactions

1965 • 417 citations

A rapidly reversible degenerate cope rearrangement

1963 • 416 citations

The Electronic Mechanism of Electrocyclic Reactions

1965 • 394 citations

Das HMO-Modell und seine Anwendung

1968 • 372 citations

An Introduction to physical organic chemistry

1969 • 365 citations

Zur Deutung der Molekelspektren. IV

1928 • 359 citations

VIBRATIONALLY INDUCED PERTURBATIONS IN MOLECULAR ELECTRON DISTRIBUTIONS

1962 • 348 citations

A Study of the Photochemical Reactions of 2-Cyclohexenones with Substituted Olefins

1964 • 343 citations

Extended hückel theory—v

1966 • 339 citations

The mechanism of the Diels-Alder reaction

1959 • 335 citations

The Assignment of Quantum Numbers for Electrons in Molecules. I

1928 • 326 citations

Zur Deutung der Molekelspektren. I

1927 • 305 citations

Extended Hückel Theory. III. Compounds of Boron and Nitrogen

1964 • 299 citations

The overlap of two allyl radicals or a four-centered transition state in the cope rearrangement

1962 • 299 citations

Cyclobutadiene- and Benzocyclobutadiene-Iron Tricarbonyl Complexes¹

1965 • 299 citations

Untersuchungen über den Verlauf der Diensynthese

1937 • 280 citations

Photochemistry of Stilbenes. III. Some Aspects of the Mechanism of Photocyclization to Phenanthrenes

1964 • 273 citations

The Correlation of Solvent Effects on the Stereoselectivities of Diels-Alder Reactions by Means of Linear Free Energy Relationships. A New Empirical Measure of Solvent Polarity

1962 • 259 citations

Stereospecific Conversion of cis-trans Isomeric Aziridines to Open-Chain Azomethine Ylides

1967 • 233 citations

Molecular rearrangements

1963 • 229 citations

The Chemistry of Diimine

1965 • 223 citations

Thermal Rearrangements

1963 • 219 citations

A molecular orbital theory of organic chemistry—VIII

1966 • 215 citations

Reactions of Bivalent Carbon Compounds. Reactivities in Olefin-Dibromocarbene Reactions

1956 • 215 citations

Thermal unimolecular reactions of hydrocarbons

1969 • 214 citations

Diphenylcyclopropenone^1,2

1965 • 204 citations

Thermische Umlagerungsreaktionen

1963 • 203 citations

STRUCTURE OF CARBENE, CH₂

1956 • 200 citations

Heptafulvene (methylenecycloheptatriene)

1960 • 182 citations

Zur Deutung der Molekelspektren. II

1927 • 180 citations

Some general characteristic properties of substituted cyclopentadienes

1963 • 177 citations

Remarks on the specificities of the photochemical and thermal transformations in the vitamin D field

1961 • 176 citations

Condensed Cyclobutane Aromatic Compounds. VI. The Pyrolysis of 1,3-Dihydroisothianaphthene-2,2-dioxide: A New Synthesis of Benzocyclobutene¹

1959 • 174 citations

Singlet oxygen reactions from photoperoxides

1967 • 158 citations

Ring Inversion and Bond Shift in Cyclooctatetraene Derivatives

1964 • 150 citations

Internal Photoaddtion Reactions of 2-Pyrone and N-Methyl-2-pyridone: A New Synthetic Approach to Cyclobutadiene

1964 • 150 citations

Dimethylenedihydroheteroaromatic Compounds and Heterocyclophanes by 1,6-Hofmann Elimination Reactions

1960 • 146 citations

Spectroscopy, Molecular Orbitals, and Chemical Bonding

1967 • 138 citations

Zur Chemie des Diimins

1965 • 137 citations

Reaktionen des Diazomethans mit Diallylsulfid und Allyläthern unter Kupfersalz‐Katalyse

1968 • 137 citations

A New Approach to Mechanistic Organic Photochemistry. IV. Photochemical Rearrangements of 4,4-Diphenylcyclohexadienone

1962 • 132 citations

Nuclear Magnetic Resonance and Infrared Study of Hindered Rotation in Nitrosamines

1957 • 131 citations

Intramolecular Photochemical Cycloaddition of Nonconjugated Olefins

1966 • 129 citations

Advances in physical organic chemistry

1974 • 127 citations

Thermal and Photosensitized Dimerizations of Cyclohexadiene

1964 • 126 citations

Reactions of the Dibromocarbene Adducts of Bicyclo[2.2.1]heptene and Bicyclo[2.2.1]heptadiene

1963 • 125 citations

The photochemical interconversions of provitamin D, lumisterol, previtamin D and tachysterol

1960 • 120 citations

Uber vielgliedrige Ringsysteme XIII: Ungesättigte Kohlenwasserstoff‐8‐Ringe

1950 • 119 citations

Molecular orbital symmetry conservation in transition metal catalyzed transformations

1967 • 118 citations

CHEMISTRY OF DIIMIDE. II. STEREOCHEMISTRY OF HYDROGEN TRANSFER TO CARBON-CARBON MULTIPLE BONDS

1961 • 116 citations

1.3‐Dipolare Cycloadditionen, XXXI. Dipolarophilen‐Aktivitäten gegenüber Diphenylnitrilimin und zahlenmäßige Ermittlung der Substituenteneinflüsse

1967 • 116 citations

Symmetry rule for predicting molecular structure and reactivity

1969 • 116 citations

The base-induced rearrangement of .alpha.-halo sulfones

1968 • 114 citations

Valence isomerization of quadricyclene to norbornadiene catalyzed by transition metal complexes

1967 • 112 citations

Cycloaddition Reactions of “Quadricyclanes”¹

1966 • 111 citations

The Formation of Cycl[3.2.2]azine Derivatives via the Reaction of Pyrrocoline with Dimethyl Acetylenedicarboxylate

1961 • 105 citations

The chemical kinetics of excited states

1955 • 105 citations

An MO-Theoretical Illumination for the Principle of Stereoselection

1966 • 105 citations

The stereochemistry of sigmatropic rearrangements. Tests of the predictive power of orbital symmetry rules

1968 • 104 citations

The Thermal Rearrangement of 1,5-Hexadiyne and Related Compounds

1967 • 103 citations

Methylene, CH₂. Stereospecific Reaction with cis- and trans-2-Butene

1959 • 102 citations

Synthesis of Some Conjugated Cyclobutane Polyolefins and their 1,2-Cycloaddition to Tetracyanoethylene^1,2

1959 • 102 citations

Organic Photochemistry

1968 • 102 citations

Stereospecific conrotatory valence isomerization of octatetraenes to cycloocta-1,3,5-trienes

1967 • 101 citations

The Synthesis of Hexaphenylpentalene

1962 • 101 citations

Synthesis of Cyclopropyl Ethers and Cyclopropanols by Carbene Transfer – Acetolysis of Cyclopropyl p‐Toluenesulfonates

1968 • 99 citations

Substituted Cyclopropenones¹

1965 • 99 citations

Macro Rings. XXXIII. A 1,6 to 1,6 Cycloaddition Reaction, a Diels-Alder Insertion Reaction, and Bent Benzene Rings^1,2

1966 • 98 citations

Mechanisms of Photochemical Reactions in Solution. XXXI. Activation and Deactivation of Conjugated Dienes by Energy Transfer

1965 • 97 citations

Wasserstoffverschiebungen, IV. Kinetischer Isotopeneffekt der 1.5‐Wasserstoffverschiebung imcis‐Pentadien‐(1.3)

1966 • 95 citations

Studies on Diene-addition Reactions. II.¹ The Reaction of 6,6-Pentamethylenefulvene with Maleic Anhydride

1944 • 94 citations

Geometrical and Structural Unimolecular Isomerization of Sym-Cyclopropane-d2

1958 • 91 citations

Valenzisomerisierungen von Cyclobutenen

1965 • 88 citations

Mechanistic Aspects of the Rearrangement and Elimination Reactions of α-Metalated Benzyl Alkyl Ethers

1966 • 87 citations

Zur Valenztautomerie des Cyclooctatetraens

1964 • 86 citations

Photochemical reactions with non-conjugated dienes

1968 • 86 citations

The Valence Tautomerism of Cyclooctatetraene

1964 • 85 citations

Thermally Induced Skeletal Rearrangements of Tropilidenes¹

1966 • 85 citations

Iodine-Catalyzed Isomerization of Olefins. II. The Resonance Energy of the Allyl Radical and the Kinetics of the Positional Isomerization of 1-Butene

1964 • 85 citations

The chemistry of cycloheptatriene: Part VII: Thermal isomerization of 7‐deuterocycloheptatriene by trans‐annular 1‐5 shifts of hydrogen

1963 • 84 citations

Light-catalyzed Organic Reactions. VI.¹ The Isomerization of Some Dienones^2,3

1957 • 84 citations

Macro Rings. XXIX. Stereochemistry of a 1,6-Cycloaddition Reaction

1963 • 83 citations

NOVEL THERMAL REARRANGEMENTS ACCOMPANYING ACETATE PYROLYSIS IN SMALL RING SYSTEMS

1960 • 83 citations

The Stereoelectronic Course of the Diene-Sulfur Dioxide Reaction

1966 • 83 citations

Conditions for favorable unimolecular reaction paths

1969 • 82 citations

Thermische und photochemische. Isomerisierung von Bicyclo[4.2.0]octadien‐(2.4), Cyclooctatrien‐(1.3.5) und ‐(1.3.6)

1965 • 82 citations

Mechanisms of Photochemical Reactions in Solution. XVI.¹ Photosensitized Dimerization of Conjugated Dienes

1963 • 80 citations

Photochemische Reaktionen. 52. Mitteilung [1]. Zur Photochemie von α,β‐ungesättigten cyclischen Ketonen: Spezifische Reaktionen der n,π*‐ und π,π*‐Triplettzustände von O‐Acetyl‐testosteron und 10‐Methyl‐Δ^1,9‐octalon‐(2)

1969 • 80 citations

Fragmentations. The Thermal 5 → 4 + 1 Reaction¹

1966 • 79 citations

Mechanistic organic photochemistry. XXIV. The mechanism of the conversion of barrelene to semibullvalene. A general photochemical process

1967 • 79 citations

Oxepines. I. Preparation of 2,3-Dihydroöxepine and 2,3-Dihydro-6-chloroöxepine¹

1960 • 77 citations

The Stereoselection Rule for Electrocyclic Interactions

1967 • 77 citations

REACTIONS OF 1,1-DIGALOCYCLOPROPANES WITH ELECTROPHILIC REAGENTS. SYNTHETIC ROUTE FOR INSERTING A CARBON ATOM BETWEEN THE ATOMS OF A DOUBLE BOND

1958 • 77 citations

Cycloaddition. II. Evidence of a Biradical Intermediate in the Thermal Addition of 1,1-Dichloro-2,2-difluoroethylene to the Geometrical Isomers of 2,4-Hexadiene

1964 • 76 citations

Photoenolization of Some Photochromic Ketones. The Scope and Mechanism of the Reaction

1965 • 75 citations

Umsetzungen in der Reihe des 1.2.3.4‐Tetramethyl‐cyclobutans

1959 • 74 citations

Photoisomerization of mono- and dibenzobarrelenes

1968 • 73 citations

1,2- and 1,4-Cycloaddition to Conjugated Dienes

1968 • 73 citations

A Simple Synthesis of Bicyclo [1.1.0]butane and its Relation to the Internal Conversion of Electronic Energy in 1,3-Butadiene

1963 • 73 citations

The Photoisomerization of Dibenzobicyclo[2.2.2]octatrienes

1966 • 73 citations

Photochemische Reaktionen. 2. Mitteilung. Über gegenseitige Beziehungen und Umwandlungen bei Bestrahlungsprodukten des Santonins

1957 • 73 citations

THE Cis ADDITION OF DIBROMOCARBENE AND METHYLENE TO Cis- AND TRANS-BUTENE

1956 • 72 citations

Vacuum Ultraviolet Photolysis of Ethane: Molecular Detachment of Hydrogen

1961 • 72 citations

Photochemical Transformations of Conjugated Cycloheptadienes

1962 • 71 citations

Cycloaddition. I. The 1,2-Addition of 1,1-Dichloro-2,2-difluoroethylene to Some Dienes

1964 • 70 citations

Steric and Electrocyclic Control of Cyclopropyl Tosylate Solvolysis Rates

1966 • 70 citations

The Role of n → π^* Triplet in the Photochemical Enolization of o-Benzylbenzophenone

1963 • 70 citations

Synthese von Cyclopropyläthern und Cyclopropanolen durch Carben‐Übertragung – Acetolyse von Cyclopropyltosylaten

1968 • 69 citations

THE PHOTOCHEMICAL REARRANGEMENT OF 4,4-DIPHENYLCYCLOHEXADIENONE. PAPER I ON A GENERAL THEORY OF PHOTOCHEMICAL REACTIONS¹

1961 • 68 citations

THE THERMAL ISOMERIZATION OF VINYLCYCLOPROPANE

1962 • 68 citations

Nucleophilic Displacement via Frontal Attack. The Stereochemistry of the Stevens Rearrangement

1952 • 67 citations

Molecular rearrangements related to the Claisen rearrangement

1968 • 66 citations

The nature of the sulphur-oxygen bond

1950 • 66 citations

Small Ring Bicyclic Azo Compounds and Bicyclic Hydrocarbons. Isomerization of Bicyclo [2.1.0.] pentane and Bicyclo [2.2.0] hexane

1964 • 66 citations

The application of the Woodward–Hoffmann orbital symmetry rules to concerted organic reactions

1968 • 65 citations

Kinetics and mechanism of the pyrolysis of 1,4-cyclohexadiene

1967 • 64 citations

Dienes from 3-Pyrrolines. A Stereospecific Deamination

1966 • 64 citations

The steric course of the thermal rearrangements of methylbicyclobutanes

1968 • 64 citations

The Structure of Photoisopyrocalciferol and Photopyrocalciferol^1-3

1959 • 63 citations

Die temperaturabhängigen NMR‐Spektren von Tricyclo[3.3.2.0^4.6]decadien‐(2.7), einigen seiner Derivate und von Tricyclo[3.3.2.0^4.6]decatrien‐ (2.7.9) (Bullvalen)

1964 • 63 citations

Carbonium Ions. XVIII. Cyclizations of Pentadienyl and Heptatrienyl Cations

1965 • 63 citations

Ring opening and fivefold degenerate scrambling in hexa- and heptamethylbicyclo[3.1.0]hexenyl cations

1968 • 63 citations

Versuche zur Darstellung von Tetramethyl‐cyclobutadien

1962 • 63 citations

Cyclopropanone¹

1966 • 63 citations

Cyclic Dienes. XXVI. 5-Methylene-1,3-cyclohexadiene, an Alicyclic Isomer of Toluene^1-3

1962 • 63 citations

Bridged Polycyclic Compounds. XXXI. Stereochemical Aspects of the Solvolysis of Cyclopropyl Chlorides¹

1965 • 63 citations

Photoisomerization of Cyclopropane Derivatives. Photointerconversion of Propenes and Cyclopropanes

1965 • 62 citations

Neues über 1,3‐Cycloadditionen

1967 • 62 citations

Studies on vitamin d and related compounds. XVIII: An investigation into the interconversion of precalciferol and calciferol and of analogous compounds

1964 • 62 citations

Stereochemistry of the Deamination of Aziridines^1a,b

1964 • 61 citations

Nachweis einer Norcaradien-Cycloheptatrien-Valenztautomerie durch Kernresonanz-Spektroskopie

1964 • 61 citations

Cyclobutane Compounds. III.^1,2 The Ionic Addition of Hydrogen Chloride, Hydrogen Bromide, and Hydrogen Iodide to Allene and Methylacetylene

1965 • 61 citations

Attempts to Synthetize Tetramethylyclobutadiene

1962 • 60 citations

Base-Catalyzed Deuterium Exchange in Cycloheptatriene. Evidence for the Cycloheptatrienide Anion

1963 • 60 citations

Über vielgliedrige Ringsysteme XIV: Cycloolefine mittlerer Ringgröβe

1954 • 60 citations

On the Nature of the Ground State of Cyclobutadiene

1966 • 60 citations

Ein neuer Zugang zum Oxepin‐System

1966 • 60 citations

Cyclopropenone

1967 • 60 citations

Thermische Umlagerung von Bicyclo[6.1.0] nonadien‐(2.4); eine reversible, intramolekulare En‐Reaktion

1964 • 60 citations

Bicyclo[2.1.0]pent-2-ene

1966 • 59 citations

Decomposition of thiirane 1,1-dioxides (episulfones)

1968 • 59 citations

Reaction of Acyclic α-Halo Sulfones with Base.^1a Stereochemistry of the Intermediate Episulfones

1966 • 57 citations

Photochemistry of dienes

1964 • 56 citations

The Synthesis and Properties of the Perinapthenylium Cation

1960 • 56 citations

Stereoisomeric Triplet States of Conjugated Dienes

1963 • 55 citations

Photochemische Reaktionen. 24. Mitteilung. Die UV.‐Bestrahlung von Testosteron und 3‐Oxo‐17β‐acetoxy‐Δ^1;5‐androstadien. (Vorläufige Mitteilung)

1963 • 55 citations

The Thermal Decomposition of cis-1,2-Dimethylcyclobutane¹

1961 • 55 citations

Concerning the Mechanism of the Reaction of Trisubstituted Phosphines with Episulfides¹

1960 • 54 citations

Mechanisms of Photochemical Reactions in Solution. XIX. Photodimerization of Methyl β-Naphthyl Ether

1963 • 54 citations

Geometry of the transition state of the retrograde homo Diels-Alder reaction. Stereospecific conversion of 1,3-to 1,4-dienes

1969 • 54 citations

Photochemistry of 1,3-Cyclobutanediones. Decomposition Modes and Chemical Intermediates¹

1965 • 54 citations

1068. The thermal unimolecular isomerizations of cis- and trans-1-methyl-2-vinylcyclopropanes

1964 • 53 citations

trans-2-Cyclooctenone

1964 • 53 citations

The kinetics and thermochemistry of the thermal rearrangement of hexamethylbicyclo[2.2.0]hexa‐2,5‐diene (hexamethyldewarbenzene) and of hexamethyltetracyclo[2.2.0,0^2,6.0^3,5]hexane (hexamethylprismane)

1968 • 52 citations

Zu vorstehender Zuschrift

1955 • 52 citations

The Stereospecific Formation and Decomposition of a cis-Episulfone from Phenyldiazomethane and Sulfur Dioxide

1966 • 51 citations

Enolene Rearrangements. Relationship to the “Abnormal Claisen Rearrangement” and Other 1,5-Hydrogen Shift Processes

1967 • 51 citations

Wasserstoff‐Verschiebungen, III. Thermische Isomerisierung von cis‐Hexadien‐(1.4)

1965 • 51 citations

Photochemische Reaktionen. 16. Mitteilung. Photochemische Umwandlungen von O‐Acetyl‐1‐dehydrotestosteron I

1962 • 51 citations

Photochemical transformations. XXVIII. Photochemical synthesis of 2,3-dihydroindoles from N-aryl enamines

1968 • 51 citations

Sigma-Pi Interaction Accompanied by Stereoselection

1966 • 51 citations

Mechanism of the Diels—Alder Reactions of Butadiene

1967 • 50 citations

Photoisomerizations—VI

1965 • 50 citations

Kleine Kohlenstoff‐Ringe II Über die Thermische Stabilität des Kohlenstoff‐Vierrings

1958 • 50 citations

Die Dienol‐Benzol‐Umlagerung von Allyldienolen: aromatische [1,2]‐, [3,3]‐ und [3,4]‐sigmatropische Umlagerungen

1968 • 50 citations

Über hochpolymere Verbindungen, 104. Mitteil.: Über die Anlagerung von Schwefeldioxyd an Äthylen‐Derivate

1935 • 50 citations

Kinetics and mechanism of the pyrolysis of 1,3-cyclohexadiene. Thermal source of cyclohexadeienyl radicals and hydrogen atoms. Addition of hydrogen atoms to benzene and toluene

1967 • 50 citations

Zur Stereochemie der aromatischen C<scp>LAISEN</scp>‐Umlagerung

1969 • 50 citations

Photochemische Reaktionen: 46. Mitteilung [1]: Zur Photochemie von α,β‐ungesättigten γ‐Aldehydoketonen I. Die UV.‐Bestrahlung von 3,19‐Dioxo‐17β‐acetoxy‐Δ⁴‐androsten

1968 • 50 citations

The Addition of Sulfur Dioxide to cis-Hexatriene. Thiepin 1,1-Dioxide

1967 • 49 citations

Neue Azulen‐Synthesen

1955 • 49 citations

9,9'-Dehydrodianthracene

1968 • 49 citations

Einstufige Synthese von Hexamethyl‐Dewar‐Benzol aus 2‐Butin

1966 • 48 citations

Evidence for a Delocalized Intermediate in the Favorskii Rearrangement. 2,6-Lutidine-promoted Methanolysis of α-Chlorodibenzyl Ketone

1962 • 48 citations

The Stereochemical Fate of the Cyclopropyl Ring in the Vinylcyclopropane Rearrangement

1967 • 48 citations

Mechanism of the photochemical valence tautomerization of 1,3-butadienes

1968 • 48 citations

Cyclopropanones. III. 2,2-Dimethylcyclopropanone

1966 • 46 citations

Cyclische gekreuzt‐konjugierte Bindungssysteme, XI. 7.8;9.10‐Dibenzo‐ und 7.8.9.10‐Tetraphenyl‐sesquifulvalen

1966 • 46 citations

Flash vacuum pyrolysis. V. Cyclobutadiene

1969 • 45 citations

Thermal unimolecular isomerization of bicyclobutane

1965 • 45 citations

Tropone Dimer. A New Type of Photocycloaddition Reaction

1966 • 45 citations

The mechanism of dimerization of dimethylketene

1968 • 44 citations

Progress in the Chemistry of Allene

1966 • 44 citations

Synthesis, Brominolysis, and Pyrolysis of a “Dewar” Anthracene. A Free Radical Displacement on Carbon

1964 • 44 citations

Synthesis of Two Atom-Bridged Tetracyclic Ketones

1960 • 44 citations

On the Mechanism of the Stevens Rearrangement

1962 • 43 citations

Untersuchungen in der Cyclobutanreihe VII. Über Dibenzotricyclooctadien und Dibenzocyclooctatetraen

1960 • 42 citations

Cyclodecapentaene

1967 • 42 citations

Calculated energies and geometries along the reaction path in Cope rearrangements

1968 • 42 citations

The thermal unimolecular isomerisation of bicyclo[3,1,0]hex-2-ene and decomposition of cyclohexa-1,4-diene

1966 • 42 citations

An Oxacarbene as an Intermediate in the Photolysis of Cyclocamphanone

1966 • 41 citations

Photochemische Reaktionen. 33. Mitteilung. Die Photoisomerisierung von 3‐Oxo‐Δ^1;4‐Steroiden in Dioxanlösung Strukturaufklärung der Photoisomeren und Bestimmung der Umlagerungs‐Sequenzen

1966 • 41 citations

The Thermal Cyclization of 1,3-Dienes to Cyclobutenes

1965 • 40 citations

Über die sogenannte anomale C<scp>LAISEN</scp>‐Umlagerung. 2. Mitteilung

1965 • 40 citations

Über die Einwirkung von Schwefeldioxyd auf Diazoverbindungen, II. Äthylensulfon

1957 • 40 citations

2,3-Diphenylvinylene Sulfone

1965 • 40 citations

Optically Active cis-trans-1,5-Cycloöctadiene from an Asymmetric Hofmann Elimination

1962 • 39 citations

THE SYNTHESIS AND REACTIONS OF DIVINYL CARBONIUM IONS

1964 • 39 citations

THERMAL REARRANGEMENT OF FEIST'S ESTER. A NEW TYPE OF INTERMEDIATE

1960 • 39 citations

Transfer of Asymmetry from Nitrogen to Carbon in the Stevens Rearrangement

1966 • 39 citations

Strahlenchemische Cyclodimerisation von 1.3-CycIlohexadien und neuartige Bildungsweisen von Diels-Alder-Addukten

1964 • 38 citations

Organic photochemistry. XXXVI. Photochemistry without light and the stereochemistry of the type A dienone rearrangement

1968 • 38 citations

Thermal Rearrangement of Cyclopropyl Ketones to Homoallylic Ketones. Relationship to the “Abnormal Claisen Rearrangement”

1965 • 38 citations

The Photolytic Decomposition of Some Sulfones by an Internally Sensitized Path

1964 • 38 citations

Über den Mechanismus der Stevens-Umlagerung

1962 • 37 citations

Cycloaddition. III. Kinetics and Reactivity in the Addition of 1,1-Dichloro-2,2-difluoroethylene to Dienes. The Biradical Mechanism

1964 • 37 citations

Selection rules for the isomerization and substitution reactions of transition metal complexes

1968 • 37 citations

Photochemische Reaktionen. 1. Mitteilung. Lichtkatalysierte Dienon‐Phenol‐Umlagerung

1957 • 37 citations

Octamethyl-semibullvalen

1968 • 37 citations

New Thermal Rearrangements of Tropilidenes¹

1965 • 37 citations

Eine verbesserte Darstellung für Dichlor‐tetramethyl‐cyclobuten

1959 • 36 citations

The Photoisomerization of the 2,3-Dihydrooxepin Ring. Long-Range Coupling in Some 2-Oxabicyclo [3.2.0]hept-6-enes¹

1965 • 36 citations

The Thermal Intramolecula Rearrangement of 7-Methyl-1,3,5-cycloheptatriene in the Gas Phase. I. The Kinetics of the Unimolecular Positional Isomerization via a 1,5 Hydrogen Transfer

1967 • 36 citations

Stereospezifische Addition von Ketenen an Enoläther

1964 • 36 citations

The Migratory Group in the Jacobsen Rearrangement¹

1962 • 36 citations

Ketenes. VI. The Stereospecific Cycloaddition of Dimethylketene to cis- and trans-Butenyl Ethyl Ethers^1,2

1965 • 36 citations

The chemistry of cycloheptatriene: Part X: Photochemical shift of hydrogen in cycloheptatrienes

1965 • 35 citations

The Thermal Decomposition of Bicyclo[1.1.0]butane

1965 • 35 citations

Wasserstoff‐Verschiebungen, II. Über das thermische Gleichgewicht zwischen Cyclooctatrien‐(1.3.6) und Cyclooctatrien‐(1.3.5)

1964 • 35 citations

The importance of antibonding orbitals

1967 • 35 citations

Sigmatropic Reactions in the 1,4-Bis(cycloheptatrienyl)benzene Isomers

1966 • 35 citations

THE REACTIVITY OF METHYLENE

1958 • 35 citations

The Direct and Sensitized Irradiation of Acyclic Dienes^1-3

1966 • 35 citations

Metal ion catalyzed cyclobutane-butadiene and benzocyclobutene-o-xylylene isomerizations

1967 • 35 citations

Valence isomerization of hexamethyl‐dewarbenzene to hexamethylbenzene catalysed by rhodium (I)‐olefin complexes

1967 • 34 citations

Reversible thermische Umlagerung von Bicyclo[5.1.0]octen‐(2) in Cyclooctadien‐(1.4)

1965 • 34 citations

Free-radical intermediates in a benzyne addition-rearrangement reaction

1969 • 34 citations

Monohomocyclooctatetraene Anion Radical. A Homoaromatic Nine-Electron System^1,2

1966 • 34 citations

MO‐Berechnungen an Heterocyclen; HMO‐Modelle neuartiger, vom Acenaphthylen bzw. Fluoranthen abgeleiteter heterocyclischer Systeme

1967 • 33 citations

Mechanistic organic photochemistry. XXXI. Electronic details of the photochemical phenyl migration in 4,4-diphenylcyclohexenone

1968 • 33 citations

Stereospecific photochemical fragmentation of cyclobutenes in solution

1969 • 33 citations

Thermal isomerization of cyclobutenes. Part 8.—Cis- and trans-1,2,3,4-tetramethylcyclobutene and bicyclo[4.2.0]oct-7-ene

1966 • 33 citations

Stereospecific photochemical cyclodimerization of 2-butene in the liquid phase

1969 • 33 citations

Gas-Phase Photolysis of Cyclohexane in the Far Ultraviolet: Modes of Decomposition of the Neutral Excited Cyclohexane Molecule and Reactions of the Parent Cyclohexane Ion

1965 • 32 citations

Über den sterischen Verlauf von Dien‐Synthesen mit acyclischen Dienen. Die allgemeine sterische Formel

1951 • 32 citations

Sensitized Photolyses of 3-Sulfolenes. Mechanism of Photochemical Sulfur Dioxide Extrusion from Sulfones

1967 • 32 citations

Photochemical transformations of selected 3-cycloheptenone derivatives

1968 • 32 citations

CYCLOADDITIONS: X. KINETICS OF THE THERMAL DECARBONYLATION OF DICYCLOPENTADIENE-1.8-DIONE

1966 • 32 citations

Derivatives of trans-3,7-Diazatricyclo [4.2.2.2^2,5]dodecane

1963 • 31 citations

Photochemische 1.2-Wasserstoff-Verschiebung im Cyclohepta-1.3.5-trien

1963 • 31 citations

The Photochemistry of cis,trans-1,3,5-Hexatriene¹

1961 • 31 citations

1,3-Dicarbanions of phenylacetone and some other multiple anions

1967 • 31 citations

Umlagerungen organischer Anionen, V. Wittig-Umlagerung von [9-Lithium-fluorenyl-(9)]-methylallyl-äthern

1966 • 31 citations

The Stereochemistry of Deamination of cis- and trans-2,3-Butenimines with Difluoramine

1967 • 31 citations

Tropone and Its Derivatives. VII

1952 • 31 citations

A photochemical rearrangement of β,γ-unsaturated cyclic ketones

1968 • 31 citations

Bicyclo[6.2.0]deca-2,4,6,9-tetraene

1967 • 30 citations

Stereochemistry of a 1,4-sigmatropic rearrangement

1968 • 30 citations

Tetramethylcyclopropanone. II. Mechanism of the Favorskii Rearrangement

1965 • 30 citations

Stereospezifische cis‐Addition von Dichlorketen an cis‐ und trans‐Cycloocten

1968 • 29 citations

Photoreaktion von Cyclohexadien‐(1.4)‐dicarbonsäure‐(1.2)‐anhydrid mit Butin‐(2)

1965 • 29 citations

Stereospecific Rearrangement of an Excited Triplet Ketone¹

1966 • 29 citations

Photoisomerization of Δ-Cholesten-3-One

1962 • 29 citations

The Thermal Dimerization of N-Carbethoxyazepine¹

1966 • 29 citations

Oxidative degradation of (benzocyclobutadiene)iron tricarbonyl

1967 • 29 citations

Carbanions. IX. Evidence for a Duality of Mechanism in Rearrangement of Carbanions

1967 • 29 citations

An estimate of the relative rates of conrotatory vs. disrotatory electrocyclic ring opening

1968 • 29 citations

Photochemische Reaktionen 4. Mitteilung. Beeinflussung der photochemischen Isomerisierung gekreuzter Dienone durch Substituenten am Chromophor

1960 • 28 citations

The Vapor Phase Decomposition of 2,5-Dihydrofuran¹

1961 • 28 citations

Darstellung und Valenzisomerisierung von Cyclobutenen mit „seitlich”︁ ankondensierten Ringen

1968 • 27 citations

Zur Existenz niedergliedriger Cycloalkine, VII. Über das tetramere Cyclohexin und seine Valenzisomeren

1965 • 27 citations

Proton-Mobility in the Indene Ring-System. IV. Alkyl-Substituted Indenes; their Syntheses, Structures, and Tautomeric Rearrangements.

1963 • 27 citations

Photochemistry of .beta.,.gamma.-unsaturated bicyclic ketones. A novel synthesis of bridged cyclobutanones

1967 • 27 citations

Kinetics and mechanism of the cycloaddition of diphenylketene and dihydropyran

1967 • 26 citations

The Cyclononatetraene Anion Radical

1966 • 26 citations

Synthesis of a Diquinocyclopropanone and a Diquinoethylene

1967 • 26 citations

Thermische Umwandlung von Phenyl‐penta‐2,4‐dienyläthern in 4‐[Penta‐2,4‐dienyl]‐phenole als Beispiel für [5,5]‐sigmatropische Umlagerungen. Vorläufige Mitteilung

1968 • 26 citations

Transannular 1,7-Addition of Tetracyanoethylene to 1,3,5,7-Tetramethylenecycloöctane

1962 • 26 citations

Kinetic Isotope Effects in the Pyrolysis of Cyclopropane and Cyclobutane

1963 • 26 citations

Aromatic molecules bearing substituents within the cavity of the π-electron cloud. Optical resolution and thermal rearrangement studies

1969 • 25 citations

Studies of the Interaction between Stable Molecules and Atoms. I. A Molecular Orbital Theory of the Activation Energy between Molecules and Atoms

1955 • 25 citations

THE PREPARATION OF A TRIVINYL CARBONIUM ION

1965 • 25 citations

Studies on vitamin D and related compounds XVII: The photo‐formation of lumisterol

1964 • 25 citations

Photochemische Reaktionen. 31. Mitteilung. [1]. Die photochemische Isomerisierung von C(‐10)‐diastereomeren 3‐Oxo‐Δ^1;5‐Steroiden

1965 • 25 citations

Tetramethylcyclobutadiene

1964 • 24 citations

Equilibrating cycloproptlcarbinyl cations

1967 • 24 citations

Phosphorus-31 chemical shifts of isostructural and isoelectronic trialkyl phosphite metal complexes

1967 • 24 citations

Mechanistic organic photochemistry

1963 • 24 citations

Cycloadditionen an Derivate des Methylenquadricyclans und des Quadricyclanons (Bis‐homo‐cyclobutadiens)

1967 • 24 citations

Photochemical Formation of Bicyclo[3.1.0]hex-2-ene and 3-Vinylcyclobutene from 1,3-Cyclohexadiene¹

1966 • 24 citations

Classical anion radical from trans-fused bicyclo[6.1.0]nona-2,4,6-triene

1968 • 23 citations

A Stereospecific Tautomeric Rearrangement.

1963 • 23 citations

8-AZACYCL(2.2.2)AZINE

1966 • 23 citations

The Relation of Cyclohexenone to Cyclohexadienone Rearrangements. Mechanistic Organic Photochemistry. XIV¹

1966 • 23 citations

The role of singlet and triplet excited states in the photochemistry of 3,5-cycloheptadienone

1968 • 22 citations

Kinetik und Thermochemie der thermischen Umlagerung von Hexamethyl‐Dewar‐Benzol und Hexamethylprisman

1968 • 22 citations

Fortschritte in der Chemie des Allens

1966 • 22 citations

Zur Kenntnis der Claisen‐Umlagerung III. Versuche mit ¹⁴C, 4. Mitteilung

1953 • 22 citations

Über die Darstellung von 1.8‐Dialkoxy‐octatetraenen‐(1.3.5.7) und deren Umlagerung in 7.8‐Dialkoxy‐bicyclo‐[4.2.0]‐octadiene‐(2.4)

1963 • 22 citations

STRUCTURE OF SUPRASTEROL-II

1958 • 22 citations

Stereochemistry of formation of cyclooctatrienes via valence isomerization

1967 • 21 citations

Photochemistry of 4,4,5-triphenyl-2-cyclohexen-1-one. Mechanistic and exploratory photochemistry. XXX

1968 • 21 citations

Stereoelectronic course of the triene-sulfur dioxide reaction

1969 • 21 citations

Die „Woodward-Hoffmann-Regeln“

2006 • 21 citations

Photocyclization of 3,3-Dimethyl-1-phenylbutene-1. A Novel Photoinduced 1,2-Methyl Migration

1966 • 21 citations

Thermal and Photochemical Behavior of a [16]Annulene

1967 • 21 citations

Cyclische gekreuzt‐konjugierte Bindungssysteme, XII. 8‐Benzyl‐9.10‐benzo‐sesquifulvalene

1966 • 21 citations

Photosensitization of wavelength-dependent lactones. Influence of orbital symmetries on triplet energy transfer

1968 • 21 citations

Cycloadditions to Derivatives of Methylenequadricyclane and of Quadricyclanone (Bishomocyclobutadiene)

1967 • 20 citations

The Photorearrangement of Benzonorbornadienes

1966 • 20 citations

Photolyses of trienes. II. Selective photoreactions of 2,7,7-trimethylcycloheptatriene

1968 • 20 citations

Versuche zur Synthese von Cyclodecapentaenen durch Valenzisomerisierung von 9.10-Dihydronaphthalinen

1964 • 19 citations

The isomerization of toluene‐1‐ ¹⁴C under the influence of aluminium bromide and hydrogen bromide

1962 • 19 citations

Stereochemistry and mechanism of a tropone photodimerization

1967 • 19 citations

Proton Exchange in Carbonium Ions of Methyl-Substituted Benzenes

1961 • 19 citations

Photochemical Reactions of Medium Ring 1,3-Dienes

1966 • 19 citations

Stability and Reactivity of Molecules from the Standpoint of Molecular Orbitals

1957 • 19 citations

Stereochemistry of the rapid equilibration of protonated bicyclo[3.1.0]hexenones

1969 • 18 citations

Internal Conversion in the Photochemistry of Di- and Triolefins

1962 • 18 citations

The Facile Isomerization and Dimerization of 1,2,6-Cyclononatriene

1965 • 18 citations

Aus der Chemie der antirachitischen Vitamine

1960 • 17 citations

The Photoisomerization of α-Phellandrene. A Structural Reassignment¹

1965 • 17 citations

THE PHOTOLYSIS AND RADIOLYSIS OF CH₃N₂CH₃ AND CH₃N₂CH₃-CD₃N₂CD₃ MIXTURES¹

1962 • 17 citations

Kinetic protium‐deuterium isotope effect in an intramolecular 1–5 shift of hydrogen

1965 • 16 citations

Communications-Photoisomerization of 3,5-Cycloheptadienones

1961 • 16 citations

Electronic Structure of Diatomic Molecules

2013 • 16 citations

Reversible Intramolecular Hydrogen Transfers between Allylic Enol and Cyclopropyl Carbonyl Systems

1965 • 16 citations

A Nonaromatic Route to a Paracyclophane: A Study of the 1,2,4,5-Tetramethylenecyclohexane to Tetramethyl[2.2]paracyclophane Conversion

1963 • 16 citations

PHOTOCHEMICAL ENOLIZATION IN ORTHO ALKYL SUBSTITUTED PHENYL‐ALKYL‐KETONES

1965 • 15 citations

Photoisomerization of bicyclo[3.2.1]octadiene

1968 • 14 citations

Thermisches und photochemisches Verhalten eines [16]Annulens

1967 • 14 citations

Factors That Control 1,3-Asymmetric Induction and Intramolecularity in Base-Catalyzed 1,3-Proton Transfer in an Indene System

1967 • 13 citations

Photochemische Reaktionen. 26. Mitteilung. Zur UV.‐Bestrahlung von O‐Acety1‐1‐dehydro‐2‐methyl‐testosteron. (Vorläufige Mitteilung)

1964 • 13 citations

Photochemical Synthesis. XI. On the Mechanism of the Maleate-Cyclohexene Cycloaddition

1966 • 13 citations

Spektroskopie, Molekül‐Orbitale und chemische Bindung

1967 • 13 citations

Woodward-Hoffmann rules: Electrocyclic reactions

1968 • 12 citations

Demonstration of lack of inversion of the migrating allyl group in photochemical rearrangement of a hexa-1,5-diene derivative

1968 • 11 citations

The Rearrangement of Crotyl-δ-C¹⁴ p-Carbethoxyphenyl Ether

1963 • 11 citations

General discussion

1939 • 11 citations

An Inverse Carbon Isotope Effect on The Ionization of Triphenylmethyl Chloride. Kinetic Isotope Effects on SN1 and SN2 Reactions

1963 • 11 citations

104. The mechanism of additions to double bonds. Part III. Molecular forces between benzoquinone and cyclopentadiene

1936 • 11 citations

Attempted Synthesis of Cyclodecapentaenes by Valence‐Bond Isomerization of 9,10‐Dihydronap thalenes

1964 • 11 citations

Kleine Ringe durch Cycloaddition polarer Verbindungen

1968 • 10 citations

Notes- Reaction of Propene-1-C¹⁴ with Maleic Anhydride

1961 • 9 citations

The Synthesis and Thermal Decomposition of 3,3,6,6-Tetramethyl-1,4-cyclohexadiene

1964 • 6 citations

Disproportionation of Alkylbenzenes. IV. Ethylbenzene and Diethylbenzene

1957 • 5 citations

Photochemische Valenzisomerisierungen von 1.3-Cyclohexadien-Derivaten

1964 • 4 citations

Über elektrocyclische Reaktionen

1967 • 3 citations

Betrachtungen über Knotenflächen bei Schwingungsproblemen

1948 • 3 citations