Carbocations and Electrophilic Reactions

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

1968 • 4,189 citations

A Correlation of Reaction Rates

1955 • 3,425 citations

THE ATOM AND THE MOLECULE.

1916 • 1,594 citations

Aromatic substitution. XXVIII. Mechanism of electrophilic aromatic substitutions

1971 • 395 citations

The Cycloheptatrienylium (Tropylium) Ion

1954 • 325 citations

Small-Ring Compounds. IV. Interconversion Reactions of Cyclobutyl, Cyclopropylcarbinyl and Allylcarbinyl Derivatives

1951 • 273 citations

Super acids. III. Protonation of alkanes and intermediacy of alkanonium ions, pentacoordinated carbon cations of CH5+ type. Hydrogen exchange, protolytic cleavage, hydrogen abstraction; polycondensation of methane, ethane, 2,2-dimethylpropane and 2,2,3,3-tetramethylbutane in FSO3H-SbF5

1969 • 272 citations

Chemistry in super acids. I. Hydrogen exchange and polycondensation of methane and alkanes in FSO3H-SbF5 ("magic acid") solution. Protonation of alkanes and the intermediacy of CH5+ and related hydrocarbon ions. The high chemical reactivity of "paraffins" in ionic solution reactions

1968 • 262 citations

Molecular orbital theory of the electronic structure of organic compounds. VI. Geometries and energies of small hydrocarbons

1971 • 253 citations

Stable carbocations. CXVIII. General concept and structure of carbocations based on differentiation of trivalent (classical) carbenium ions from three-center bound penta- of tetracoordinated (nonclassical) carbonium ions. Role of carbocations in electrophilic reactions

1972 • 252 citations

The Halogenation of Ethylenes

1937 • 239 citations

Über sterische Hinderung in Brückenringen (Bredtsche Regel) und über die meso‐trans‐Stellung in kondensierten Ringsystemen des Hexamethylens

1924 • 222 citations

A STUDY OF SUPERACID SOLUTIONS. I. THE USE OF THE CHLORANIL ELECTRODE IN GLACIAL ACETIC ACID AND THE STRENGTH OF CERTAIN WEAK BASES

1927 • 210 citations

Vertical stabilization of cations by neighboring .sigma. bonds. General considerations

1971 • 201 citations

Stable carbonium ions. XCI. Carbon-13 nuclear magnetic resonance spectroscopic study of carbonium ions

1969 • 189 citations

Protonated heteroaliphatic compounds

1970 • 186 citations

Stable Carbonium Ions. V.^1a Alkylcarbonium Hexafluoroantimonates

1964 • 177 citations

Electron Deficient Compounds

1971 • 174 citations

Centenary Lecture. Nonclassical ions and homoaromaticity

1969 • 170 citations

Studies in Stereochemistry. I. The Stereospecific Wagner--Meerwein Rearrangement of the Isomers of 3-Phenyl-2-butanol

1949 • 165 citations

Stable carbocations. CXXIV. Benzenium ion and monoalkylbenzenium ions

1972 • 164 citations

Fluorosulfuric acid and related superacid media

1968 • 162 citations

Stable Carbonium Ions. II.^1a Oxocarbonium^1b (Acylium) Tetrafluoroborates, Hexafluorophosphates, Hexafluoroantimonates and Hexafluoroarsenates. Structure and Chemical Reactivity of Acyl Fluoride: Lewis Acid Fluoride Complexes^1c

1962 • 160 citations

Topological representation of stereoisomerism. I. Polytopal rearrangements

1969 • 160 citations

Modes of carbonium ion stabilization. Evidence from charge-transfer spectra

1970 • 158 citations

Reactions of Gaseous Ions. XIV. Mass Spectrometric Studies of Methane at Pressures to 2 Torr

1965 • 154 citations

X-ray photoelectron spectroscopy

1970 • 153 citations

THE COMMON BASIS OF INTRAMOLECULAR REARRANGEMENTS¹

1932 • 152 citations

Über die Gleichgewichts‐Isomerie zwischen Bornylchlorid, Isobornylchlorid und Camphen‐chlorhydrat

1922 • 149 citations

Über tertiäre Carboxoniumsalze

1960 • 149 citations

Small-ring Compounds. XXIII. The Nature of the Intermediates in Carbonium Ion-type Interconversion Reactions of Cyclopropylcarbinyl, Cyclobutyl and Allylcarbinyl Derivatives^1a

1959 • 148 citations

THE STRUCTURE OF THE BICYCLO[2,2,1]2-HEPTYL (NORBORNYL) CARBONIUM ION

1949 • 148 citations

Über Nitriliumsalze, I. Mitteil.

1956 • 146 citations

Electrophilic reactions at single bonds. III. H-D exchange and protolysis (deuterolysis) of alkanes with superacids. The mechanism of acid-catalyzed hydrocarbon transformation reactions involving the .sigma. electron pair donor ability of single bonds via three-center bond formation

1971 • 144 citations

SYNTHESIS OF TROPENIUM (CYCLOHEPTATRIENYLIUM) SALTS BY HYDRIDE EXCHANGE¹

1957 • 133 citations

Stable carbonium ions. CI. Tetraphenylcyclobutadiene dication

1970 • 131 citations

Neighboring Carbon and Hydrogen. XI. Solvolysis of exo-Norbornyl p-Bromobenzenesulfonate^1,2,3

1952 • 122 citations

Stable Carbonium Ions. IV.^1a Secondary and Tertiary Alkyl and Aralkyl Oxocarbonium Hexafluoroantimonates. Formation and Identification of the Trimethylcarbonium Ion by Decarbonylation of the tert-Butyl Oxocarbonium Ion

1963 • 120 citations

Exchanges of Halogen and Hydrogen between Organic Halides and Isoparaffins in the Presence of Aluminum Halides

1944 • 119 citations

Stable Carbonium Ions. LXV: Protonation of Hydrogen Cyanide and Alkylnitriles in <font>FSO</font>₈<font>H</font>–<font>SbF</font>₅–<font>SO</font>₂ Solution. Comparative Study of Meerwein's <font>N</font>-Alkylnitrilium Ions

2003 • 118 citations

Dibenzalaceton und Triphenylmethan. Ein Beitrag zur Farbtheorie

1902 • 116 citations

A NUCLEAR MAGNETIC RESONANCE INVESTIGATION OF THE PROTONATION OF AMIDES IN FLUOROSULPHURIC ACID

1963 • 116 citations

Stable carbonium ions. C. Structure of the norbornyl cation

1970 • 115 citations

The sym-Triphenylcyclopropenyl Cation, a Novel Aromatic System¹

1958 • 114 citations

The 1,1,2,3,4,5,6-heptamethylbenzenonium ion

1958 • 114 citations

Stable carbonium ions. XLVIII. Halonium ion formation via neighboring halogen participation. Tetramethylethylene halonium ions

1967 • 107 citations

Electron Deficient Compounds¹

1947 • 106 citations

The Preparation and Reactions of a Homologus Series of Aliphatic Polyenylic Cations

1965 • 106 citations

Stable Carbonium Ions. XXXIX.¹ Formation of Alkylcarbonium Ions via Hydride Ion Abstraction from Alkanes in Fluorosulfonic Acid-Antimony Pentafluoride Solution. Isolation of Some Crystalline Alkylcarbonium Ion Salts

1967 • 104 citations

Stereochemistry of allyl cations from the isomeric 2,3-dimethylcyclopropyl chlorides. Stereomutations of allyl cations

1969 • 103 citations

Ueber die basischen Eigenschaften des Kohlenstoffs und die Constitution des sogenannten Triphenylmethyls

1901 • 102 citations

Stable Carbonium Ions. LIV. Protonation of and Hydride Ion Abstraction from Cycloalkanes and Polycycloalkanes in Fluorosulfonic Acid-Antimony Pentafluoride

1968 • 100 citations

Zwischenmolekulare Anionenübertragungen bei organischen Reaktionen

1960 • 99 citations

The Electronic Spectra of Carbonium Ions in Strongly Acidic Solutions¹

1966 • 98 citations

Stable carbocations. CXIV. Structure of cyclopropylcarbinyl and cyclobutyl cations

1972 • 96 citations

Near hartree-fock energy and equilibrium geometry of CH+5

1970 • 95 citations

The absorption spectra of aromatic carbonium ions in HF solution

1958 • 94 citations

The Hydrolysis of Aqueous Hydroborate

1962 • 93 citations

Retention of Configuration in the Reaction of the 3-Bromo-2-butanols with Hydrogen Bromide

1939 • 93 citations

Stable carbonium ions. LXIV. Protonated carbonic acid (trihydroxycarbonium ion) and protonated alkyl (aryl) carbonates and hydrogen carbonates, and their cleavage to protonated carbonic acid and carbonium ions. The possible role of protonated carbonic acid in biological carboxylation processes

1968 • 86 citations

Stable Carbonium Ions. XI.¹ The Rate of Hydride Shifts in the 2-Norbornyl Cation

1964 • 85 citations

Bicyclic Structures Prohibiting the Walden Inversion. Replacement Reactions in 1-Substituted 1-Apocamphanes

1939 • 83 citations

Stable Carbonium Ions. VIII. The 1-Adamantyl Cation

1964 • 83 citations

Stable carbonium ions. LXII. Halonium ion formation via neighboring halogen participation: ethylenehalonium, propylenehalonium, and 1,2-dimethylethylenehalonium ions

1968 • 83 citations

The Dependence of the Rate of Hydration of Isobutene on the Acidity Function, H₀, and the Mechanism for Olefin Hydration in Aqueous Acids

1952 • 81 citations

stable carbonium ions. lvii catalysts with olefins.ang. .ang.

1968 • 80 citations

The importance of orbital orientation as a rate-controlling factor in intramolecular reactions of carbonium ions

1970 • 77 citations

THE NATURE OF THE INTERMEDIATE IN CARBONIUM ION-TYPE INTERCONVERSION REACTIONS OF CYCLOBUTYL, CYCLOPROPYLCARBINYL AND ALLYLCARBINYL DERIVATIVES¹

1951 • 77 citations

Alkylation and Related Processes of Modern Petroleum Practice

1948 • 76 citations

Nuclear magnetic double resonance studies of the dimethylcyclopropylcarbinyl cation. Measurement of the rotation barrier

1970 • 76 citations

Stable carbonium ions. LXXXIX. Tetramethylcyclobutenium dication, an aromatic 2 .pi.-electron system

1969 • 76 citations

Phenonium Ions as Discrete Intermediates in Certain Wagner-Meerwein Rearrangements

1964 • 74 citations

Stable carbonium ions. XLI. Protonated aliphatic alcohols and their cleavage to carbonium ions

1967 • 73 citations

O-H Chemical Shift, Conformation, and Electron Delocalization in Protonated Carbonyl Compounds

1967 • 73 citations

Carbonium Ions. XI. Nuclear Magnetic Resonance Spectra of the Aliphatic Alkenyl Cations

1963 • 73 citations

NUCLEAR MAGNETIC RESONANCE STUDIES OF THE PROTONATION OF WEAK BASES IN FLUOROSULFURIC ACID: V. KETONES, CARBOXYLIC ACIDS, AND SOME OTHER OXYGEN BASES

1965 • 73 citations

Electrophilic reactions at single bonds. V. Nitration and nitrolysis of alkanes and cycloalkanes with nitronium salts

1971 • 72 citations

Stable carbonium ions. LXIX. Protonation of ureas, guanidines, and biotin in super acid solution

1968 • 72 citations

Chemistry in super acids. II. Nuclear magnetic resonance and laser Raman spectroscopic study of the antimony pentafluoride-fluorosulfuric acid (sulfur dioxide) solvent system (magic acid). The effect of added halides, water, alcohols, and carboxylic acids. Study of the hydronium ion

1969 • 72 citations

Stable carbonium ions. XLII. Protonated aliphatic aldehydes

1967 • 71 citations

Rearrangement reactions of secondary carbonium ions. Protonated cyclopropane intermediates formed from sec-butyl cation

1968 • 71 citations

The Spectral Properties of Alkoxymethyl Cations¹

1966 • 70 citations

Stable Carbonium Ions. X.¹ Direct Nuclear Magnetic Resonance Observation of the 2-Norbornyl Cation

1964 • 70 citations

LXVI.—The salts of dimethylpyrone, and the quadrivalence of oxygen

1899 • 68 citations

Stable carbonium ions. XXXIII. Primary alkoxycarbonium ions

1967 • 67 citations

Stable Carbonium Ions. XIV.¹ Cyclopropylcarbonium Ions

1965 • 67 citations

Ueber isomere Dehydrocamphersäuren, Lauronolsäuren und Bihydrolauro‐Lactone

1902 • 66 citations

Physical Organic Chemistry: II-Complexes as Intermediates in Organic Reactions

1965 • 66 citations

PMR spectroscopic investigation of structures, stabilities, and rearrangement reactions of C₄‐C₇tertiary carbonium ions in HF‐SbF₅

1968 • 66 citations

Über die Halochromie und »Solvatochromie« des Dibenzal‐acetons und einfacherer Ketone, sowie ihrer Ketochloride

1922 • 66 citations

Stable carbocations. CXXI. Carbon-13 magnetic resonance spectroscopy study of ethylenarenium ions (spiro[2.5]octadienyl cations)

1971 • 65 citations

Fluorocyclopropanes. II. Synthesis, properties, and reactions of perfluorocyclopropene

1969 • 64 citations

Bridged, non-classical carbonium ions

1966 • 64 citations

Electron Deficient Compounds. II. Relative Energies of ``Half-Bonds''

1949 • 63 citations

N.m.r. study of proton exchange of weak bases in hydrogen fluoride

1962 • 63 citations

ESCA: Electron Spectroscopy for Chemical Analysis

1972 • 62 citations

Stable carbonium ions. XCVI. Propadienylhalonium ions and 2-haloallyl cations

1970 • 61 citations

THE INTERACTION OF FRIEDEL–CRAFTS CATALYSTS WITH ORGANIC MOLECULES: I. THE CH₃COCl:AlCl₃ SYSTEM

1959 • 61 citations

Stable carbonium ions. XLIV. Cleavage of protonated aliphatic carboxylic acids to alkyloxocarbonium ions

1967 • 59 citations

Carbonium Ions. XIII. Ultraviolet Spectra and Thermodynamic Stabilities of Cycloalkenyl and Linear Alkenyl Cations

1963 • 59 citations

Electrophilic reactions at single bonds. VII. Hydrogen-deuterium exchange accompanying protolysis (deuterolysis) of borohydride and aluminum hydride anions with anhydrous strong acids. Intermediacy of pentahydroboron and pentahydroaluminum and their structural relation with the methonium ion

1972 • 58 citations

Methods and Applications of Nuclear Magnetic Double Resonance

1971 • 58 citations

Rearrangement of Alkyl Groups. Kinetic and Tracer Studies in the Pinacol Rearrangement¹

1959 • 58 citations

Stable carbonium ions. LXXXV. Laser Raman and infrared spectroscopic study of alkylcarbonium ions

1971 • 57 citations

Methoden und Anwendungen der kernmagnetischen Doppelresonanz

1971 • 56 citations

Darstellung und Untersuchung organischer Fluorverbindungen XX. Darstellung von Säurefluoriden

1956 • 55 citations

Structure of the 7-Norbornadienyl Carbonium Ion

1962 • 54 citations

Retention and inversion in bimolecular substitution reactions of methane

1969 • 54 citations

Durch Aluminiumchlorid Katalysierte Reaktion, VI. Mitteil.: Die Umlagerung des Cyclohexans in Metyl‐cyclopentan

1933 • 54 citations

Chemistry and spectroscopy in strongly acidic solutions. Part XXIII: Reversible reaction between carbonium ions and hydrogen

1969 • 54 citations

Stable carbonium ions. XXXIV. 1-Methylcyclopentyl cation

1967 • 54 citations

Carbonium ions : an introduction

1967 • 53 citations

The Infra-Red and Raman Spectra and the Thermodynamic Properties of Diborane

1949 • 52 citations

THE MECHANISM OF PARAFFIN ISOMERIZATION

1946 • 52 citations

Etude spectroscopique des complexes formés par les acides de Lewis. IV. Spectre d'absorption infrarouge des composés d'addition du chlorure d'aluminium avec les chlorures d'acétyle et de mésitoyle

1957 • 51 citations

Amine Boranes. III. Hydrolysis of Pyridine Diphenylborane and the Mechanism of Hydride Transfer Reactions

1958 • 51 citations

NUCLEAR MAGNETIC RESONANCE STUDIES OF THE PROTONATION OF WEAK BASES IN FLUOROSULPHURIC ACID: III. METHYLBENZENES AND ANISOLE

1964 • 51 citations

Stable Carbonium Ions. XXIV.¹ Trifluoromethylcarbonium Ions, Protonated Trifluoromethyl Alcohols, and Protonated Fluoro Ketones

1966 • 49 citations

Stable Carbonium Ions. IX.¹ Methylbenzenonium Hexafluoroantimonates²

1965 • 49 citations

Stable carbonium ions. LXXXI. Alkyl(aryl)halocarbonium ions and haloarylcarbonium ions

1969 • 48 citations

Nuclear Magnetic Resonance of Proton Complexes of Weak Bases

1961 • 47 citations

Aromatic Substitution. IV.^1a Protonated and Deuterated Alkylbenzene Tetrafluoroborate Complexes^1b

1958 • 47 citations

The Crystal Structure of CH₃CO⁺SbF₆^-

1966 • 47 citations

Molecular orbital calculations on carbonium ions. III. Barriers in ethyl cations

1970 • 47 citations

An investigation of the geometry of the CH+5 ion by the CNDO method

1969 • 46 citations

Electron spectroscopy of organic ions. II. Carbon 1s electron binding energies of the norbornyl, 2-methylnorbornyl, and related cations. Differentiation between nonclassical carbonium and classical carbenium ions

1972 • 46 citations

Friedel-Crafts chemistry. VII. Methyl and ethyl fluoride-antimony pentafluoride complexes. Structure and alkylating ability. Evidence for the intermediacy of the ethyl cation

1972 • 45 citations

The Solvolysis of p-Nitrobenzoates of Certain Cyclopropylcarbinols^1,2

1959 • 45 citations

The Crystal and Molecular Structure of a Carbonium Ion. 3-Chloro-1,2,3,4-tetraphenylcyclobutenium Pentachlorostannate

1964 • 45 citations

The Stereochemistry of the Perbenzoic Acid Oxidation of Optically Active exo-Acetylnorbornane¹

1959 • 45 citations

Stable Carbonium Ions in Solution

1970 • 45 citations

Friedel-Crafts chemistry. IV. Dialkylhalonium ions and their possible role in Friedel-Crafts reactions

1969 • 45 citations

The electronic structure and stability of CH+5 and CH−5

1970 • 44 citations

Tetraphenylcyclobutadiene Derivatives. V.¹ The Tetraphenylcyclobutenium Dication

1962 • 44 citations

Chemical Shifts and Long Range Shielding Effects in the Nuclear Magnetic Resonance Spectra of Phenyldimethyl, Diphenyl, Triphenyl, and Related Carbonium Ions

1964 • 44 citations

Stable carbonium ions. LII. Protonated esters and their cleavage in fluorosulfonic acid-antimony pentafluoride solution

1967 • 44 citations

Stable carbonium ions. XLIII. Protonated aliphatic ketones

1967 • 44 citations

Stable carbonium ions. LVIII. Carbon-13 resonance investigation of protonated carboxylic acids (carboxonium ions) and oxocarbonium ions (acyl cations)

1967 • 44 citations

Electrophilic reactions at single bonds. IV. Hydrogen transfer from, alkylation of, and alkylolysis of alkanes by alkylcarbenium fluoroantimonates

1971 • 43 citations

Iron(III)-(II) couple in acetonitrile. Oxidation of thiocyanate by iron(III)

1970 • 43 citations

Stable carbonium ions. CXV. Ethylenephenonium and ethylene-p-toluonium ions

1970 • 43 citations

Rapid rearrangements in the tert-amyl cation and the relative sign of the coupling constants

1968 • 43 citations

On Brown's Classical Norbornyl Cation

1965 • 43 citations

Stable carbocations. CXXXVII. Cycloheptenyl, cyclooctenyl, and cyclononenyl cations

1972 • 42 citations

Electrophilic Substitution at methane: Short communication

1968 • 42 citations

Über salzartige Derivate von Säureradikalen. 2. Mitteilung. Die Acylderivate der Antimon(V)‐chlorwasserstoffsäure. I

1943 • 42 citations

A ¹⁹F nuclear magnetic resonance investigation of the formation of Sb₂F₁₁⁻ and Sb_nF_5n+1⁻ in the CsF–SbF₅, t-butyl halide–SbF₅, and tetraalkylammonium hexafluoroantimonate–SbF₅ systems

1969 • 40 citations

Stereochemical inhibition of intramolecular 1,2 shifts. Intermolecular nature of hydride shifts in the adamantane series

1970 • 40 citations

Proton-¹³C Spin-Spin Coupling. V. Inadequacy of Correlation of Proton-¹³C Coupling with s-Character

1964 • 40 citations

Stable Carbonium Ions. VI.¹ Nuclear Magnetic Resonance Investigation of the Diphenylcarbonium, Diphenylmethylcarbonium, and Phenyldimethylcarbonium Ions

1964 • 40 citations

Stable Carbonium Ions. XIII.¹ Generation of Stable Alkyl, Alkylaryl, and Cycloalkyl Carbonium Ions from Alcohols in Fluorosulfonic Acid and Antimony Pentafluoride

1965 • 39 citations

Friedel-Crafts chemistry. V. Isolation, carbon-13 nuclear magnetic resonance, and laser Raman spectroscopic study of dimethylhalonium fluoroantimonates

1970 • 39 citations

Mechanisms for carbon–hydrogen bond breakage

1958 • 39 citations

Stable carbonium ions. XLV. Benzyl cations

1967 • 39 citations

Direkte Synthese der Adamantan-carbonsäure-(1)

1960 • 39 citations

THE SYNTHESIS AND REACTIONS OF DIVINYL CARBONIUM IONS

1964 • 39 citations

Stable carbonium ions. LXVIII. Protonation and ionization of cyclopropyl halides. Measurement of rotational barriers in substituted allyl cations

1968 • 38 citations

The Mechanism of the Alkylation of Paraffins

1945 • 38 citations

A Detailed Analysis of the 7-Norbornadienyl Carbonium Ion Nuclear Magnetic Resonance Spectrum

1963 • 38 citations

Stable carbonium ions. XL. Protonated aliphatic thiols and sulfides and their cleavage to carbonium ions

1967 • 38 citations

E2C mechanism in elimination reactions. Absence of an extreme form of merged mechanism for elimination and substitution. Comparison of Saytzeff vs. Hofmann tendencies and of anti vs. syn eliminations

1970 • 37 citations

The equilibrium geometry and electronic structure of the CH5 cation calculated with CNDO

1970 • 37 citations

Triazidocarbonium‐hexachloroantimonat [C(N₃)₃]⁺ [SbCl₆]⁻

1966 • 37 citations

Organometallic chemistry. I. Ethylene- and norbornylenemercurinium ions

1971 • 37 citations

Dicarbonium Ions of the Triarylmethyl Type. Ions from o-, m- and p- Xylylene Glycols

1963 • 36 citations

Proton magnetic resonance spectra of protonated dialkyl ketones: (Dialkylhydroxycarbonium ions)

1967 • 36 citations

Friedel-Crafts chemistry. VI. Alkylation of heteroorganic compounds with dialkylhalonium fluoroantimonates. A new general preparation of onium ion salts

1970 • 36 citations

Structure of the Nonclassical 7-Norbornenyl Cation¹

1966 • 36 citations

TRIPHOSPHONITRILIC HEXA-ISOTHIOCYANATE¹

1958 • 35 citations

Protonation of halogen-containing benzenes in Hf-SbF5. I. Proton magnetic resonance spectra of fluoro-chloro-, and bromoesitylenium and xylenium ions

1968 • 35 citations

Multicharged Carbonium Ions. III. Long-lived Ions from Trichloromethylpolymethylbenzenes^1-3

1961 • 34 citations

Stable carbonium ions. LXXXIII. Protonation of amino acids, simple peptides, and insulin in superacid solutions

1970 • 34 citations

Stable Carbonium Ions. XX.¹ Phenyl- and Diphenylfluorocarbonium Ions

1966 • 34 citations

Stable carbonium ions. LXVII. Halonium ion formation via 1,4-halogen participation. Five-membered-ring tetramethylenehalonium, 2-methyltetramethylenehalonium, and 2,5-dimethyltetramethylenehalonium ions

1968 • 33 citations

Electronic Spectra of Carbonium Ions

1957 • 32 citations

ESCA: Elektronen‐Spektroskopie für chemische Analyse

1972 • 31 citations

Stable Carbonium Ions. XII.¹ Direct Observation of the Allyl and 2-Methylallyl Cations

1964 • 31 citations

Photoelectron spectroscopy of organic ions. I. Carbon 1s electron binding energies of the tert-butyl, trityl, and tropylium cations

1970 • 31 citations

Stable Carbonium Ions. XXIX.¹ The Reaction of Alkyl (Acyl) Sulfinylamines and Isocyanates (Thioisocyanates) with Nitrosonium Salts. New Deaminative Formations of Carbonium (Oxocarbonium) Ions

1966 • 31 citations

Degenerate five-carbon scrambling in the 7-norbornadienyl cation

1967 • 30 citations

Stable carbocations. CXXX. Carbon-13 nuclear magnetic resonance study of halocarbenium ions. Degree of halogen "back-donation" and relative stability of halocarbeniumions

1972 • 30 citations

Chemistry and spectroscopy in strongly acidic solutions. Part III: Formation of two different entities on protonation of formic acid

1967 • 30 citations

Pentadienyl Cations and Their Rearrangements in FSO₃H-SbF₅Solution¹

1966 • 29 citations

Über die Natur der Halogenwasserstoffe

1925 • 29 citations

Stable carbonium ions. XXXI. p-Anisonium and methylphenonium ion-formation via aryl participation in strong acid solution

1967 • 29 citations

Direct Observation of Norbornenyl Cations

1966 • 29 citations

Chemistry and spectroscopy in strongly acidic solutions. Part IV: NMR Spectroscopic observation and structure of protonated aldehydes. Kinetics of deprotonation

1967 • 29 citations

Physical Properties of the Tricyclopropylmethyl Cation

1962 • 28 citations

Friedel-Crafts chemistry. III. Methyl fluoride-antimony pentafluoride, a powerful new methylating agent. Methylation reactions and the polycondensation of methyl fluoride

1969 • 28 citations

Tris(pentafluorophenyl)methyl Cation

1967 • 28 citations

The Common Basis of Intramolecular Rearrangements. II.¹ The Dehydration of Di-tert-butylcarbinol and the Conversion of the Resulting Nonenes to Trimethylethylene and Isobutylene

1933 • 27 citations

Stable Carbonium Ions. XXVII.^1a Cyclo- and Polycycloalkyloxocarbonium Ions

1966 • 27 citations

Stable carbonium ions. LXXIII. 3-Aryl-2,3-dimethyl-2-butyl cations and factors controlling phenonium ion-phenethyl cation-benzyl cation equilibria

1969 • 27 citations

Stable Carbonium Ions. XXVIII.¹ Protonated Aliphatic Alcohols

1966 • 26 citations

Activated complex for hydrogen migration in the ethyl cation. Ab initio calculations

1970 • 25 citations

ANALYTICAL POTENTIAL OF PHOTOELECTRON SPECTROSCOPY

1970 • 25 citations

THE PREPARATION OF A TRIVINYL CARBONIUM ION

1965 • 25 citations

Stable carbonium ions. CXI. Styryl(1-phenylethyl) cation and substituted styryl cations

1971 • 24 citations

Stable Carbonium Ions. XIX.¹ Benzyl Cations

1966 • 24 citations

Stable Carbonium Ions. XXXVII.¹ Alkyl- and Arylalkylfluorocarbonium Ions. The Dimethyl- and Phenylmethylfluorocarbonium Ion

1967 • 24 citations

Stable Carbonium Ions. XXII.^1a Phenylethyl Cations²

1966 • 23 citations

Stable Carbonium Ions. XXXV.¹ Pentafluorophenylcarbonium Ions

1967 • 22 citations

Isolation of the Stable Boron Trifluoride – Hydrogen Fluoride Complexes of the Methyl-benzenes ; the Onium Salt (or σ-Complex) Structure of the Friedel-Crafts Complexes

1956 • 22 citations

Stable Carbonium Ions. XXV.^1a Alkylene- (Arylene-) dioxodicarbonium Ions (Acyl Dications)

1966 • 21 citations

Unstable intermediates

1960 • 21 citations

INTERACTION OF FRIEDEL-CRAFTS CATALYSTS WITH ALKYL HALIDES AND AROMATIC HYDROCARBONS

1950 • 20 citations

Pentachloroallyl Cation and Its Salts¹

1966 • 20 citations

Stable Carbonium Ions. XXXII.¹ Alkyldicarbonium Ions

1967 • 19 citations

Carbonium Ions. X. Hydride Transfers Involving Arylcarbonium and Alkylcarbonium Ions

1962 • 19 citations

Stable, Long-lived Carbonium Ions

1967 • 19 citations

On the Supposed Formation of Extraordinary Dipositive Carbonium Ions in Sulfuric Acid

1964 • 19 citations

THE MECHANISM OF THE ALKYLATION OF PARAFFINS WITH OLEFINS IN THE PRESENCE OF ALUMINUM CHLORIDE

1944 • 19 citations

Die Umsetzung von Phenyl-arsin mit Thionylchlorid, Thlonyl-anilin und Sulfurylchlorid

1956 • 18 citations

Beiträge zum Reaktionsmechanismus bei der Friedel‐Craftsschen Reaktion

1933 • 17 citations

Stable carbonium ions. XXXVIII. Alkenyloxocarbonium ions

1967 • 17 citations

Stereochemistry of the cyclopropylcarbinyl-cyclopropylcarbinyl rearrangement

1968 • 17 citations

Chemistry in super acids. IV. Exchange of hydrogen and deuterium in HF (DF)-SbF5, FSO3H (FSO3D)-SbF5, and H2SO4 (D2SO4)-SbF5 solutions

1970 • 16 citations

Stable carbocations. CXX. Preparation of alkyl (aryl) carbenium ions from olefins

1971 • 16 citations

On Carbonium Ions in Chlorosulfuric Acid

1964 • 15 citations

Chemistry and spectroscopy in strongly acidic solutions. II: Kinetics of formation and hydration of methyl oxocarbonium ions

1967 • 14 citations

Chemistry and spectroscopy in strongly acidic solutions. Part XXXI: Rates of carbonylation of stabilized carbonium ions

1970 • 14 citations

A STABLE DIPOSITIVE CARBONIUM ION¹

1958 • 13 citations

Stable carbocations. CXXIII. Reported N-protonation of N,N-(diisopropyl)carbamates. Evidence for O-protonation followed by rearrangement

1971 • 12 citations

Carbonium Ions. XV.¹ Observation of “Classical” Phenylethyl Cations

1965 • 12 citations

The Isomerization of Cyclohexane and Methylcyclopentane in the Presence of Aluminum Halides. I. The Nature of the Catalyst

1948 • 11 citations

The Supposed ArC²⁺Cl Ions

1964 • 11 citations

Chemistry and spectroscopy in strongly acidic solutions. Part X: Formation, structure and decomposition of hydroxy‐alkoxy‐carbonium ions

1967 • 11 citations

Alkylcarbonium‐ und Oxocarbonium‐Salze

1963 • 9 citations

The Use of 3d Orbitals in Bonding by Carbon

1953 • 5 citations

Does Carbon Utilize 3d Orbitals in Bonding?

1953 • 5 citations