Collect. Czech. Chem. Commun.
1999, 64, 1433-1447
https://doi.org/10.1135/cccc19991433
Steric Effects and Steric Inhibition of Resonance in Isopropylbenzoic Acids in the Gas Phase and in Solution
Pavel Fiedlera, Jiří Kulhánekb, Michèle Decouzonc, Jean-François Galc, Pierre-Charles Mariac and Otto Exnera,*
a Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 166 10 Prague 6, Czech Republic
b Department of Organic Chemistry, University of Pardubice, 532 10 Pardubice, Czech Republic
c GRECFO - Chimie Physique Organique, Université de Nice-Sophia Antipolis, 06108 Nice, Cedex 2, France
Individual author index pages
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Synthesis of N4-alkyl-5-azacytidines and their base pairing with carbamoylguanidines – a contribution to explanation of the mutagenicity of 5-aza-2'-deoxycytidine
Symposium Series 1999, Vol. 2, pp. 248–251 [Abstract]
Published online 2016-05-08 23:31:28 - Angelina Andronova, Florence Szydlo, Filip Teplý, Miroslava Tobrmanová, Amandine Volot, Irena G. Stará*, Ivo Starý*, Lubomír Rulíšek, David Šaman, Josef Cvačka, Pavel Fiedler and Pavel Vojtíšek
The quest for alternative routes to racemic and nonracemic azahelicene derivatives
2009, Vol. 74, Issue 1, pp. 189–215 [Abstract] - Charly Mayeux, Lionel Massi, Jean-François Gal*, Pierre-Charles Maria, Jaana Tammiku-Taul, Ene-Liis Lohu and Peeter Burk*
Bonding between the cesium cation and substituted benzoic acids or benzoate anions in the gas phase: A density functional theory and mass spectrometric study
2009, Vol. 74, Issue 1, pp. 167–188 [Abstract] - Zuzana Krausová, Petr Sehnal, Filip Teplý, Irena G. Stará*, Ivo Starý*, David Šaman, Josef Cvačka and Pavel Fiedler
Synthesis of Methoxy Substituted Centrally Chiral Triynes as Precursors of Functionalised Nonracemic Helicene-Like Compounds
2007, Vol. 72, Issue 11, pp. 1499–1522 [Abstract] - Stanislav Böhm and Otto Exner*
Revision of the Dual-Substituent-Parameter Treatment; Reaction Series with a Donor Reaction Centre
2007, Vol. 72, Issue 8, pp. 1158–1176 [Abstract] - Otto Exner* and Stanislav Böhm
Analysis of the Ortho Effect: Basicity of 2-Substituted Benzonitriles
2006, Vol. 71, Issue 8, pp. 1239–1255 [Abstract] - Stanislav Böhm and Otto Exner*
Estimation of Resonance Energy from Forced Nonplanar Conformations of Conjugated Molecules
2005, Vol. 70, Issue 10, pp. 1577–1588 [Abstract] - Stanislav Böhm and Otto Exner*
Interaction of Polar Groups with a Bulky Hydrocarbon Residue: Polarizability and Steric Effects
2005, Vol. 70, Issue 3, pp. 370–382 [Abstract] - Zuzana Alexandrová, Irena G. Stará*, Petr Sehnal, Filip Teplý, Ivo Starý*, David Šaman and Pavel Fiedler
Synthetic Studies Toward Chiral Aromatic Triynes as Key Substrates for the Asymmetric Synthesis of Helicene-Like Molecules
2004, Vol. 69, Issue 12, pp. 2193–2211 [Abstract] - Stanislav Böhm and Otto Exner*
Attenuation of the Substituent Effects Along the Aliphatic Chain
2004, Vol. 69, Issue 5, pp. 984–995 [Abstract] - Alois Pískala*, Naeem B. Hanna, Milena Masojídková, Pavel Fiedler and Ivan Votruba
Synthesis of N4-Amino and N4-Hydroxy Derivatives of 5-Azacytidine. A Facile Rearrangement of the N4-Amino Derivative to 5-(3-β-D-Ribofuranosylureido)-1H-1,2,4-triazole
2004, Vol. 69, Issue 4, pp. 905–917 [Abstract] - Pavel Fiedler and Otto Exner*
Conformation of Aromatic Carbonyl Derivatives: An Infrared Study
2004, Vol. 69, Issue 4, pp. 797–810 [Abstract] - Irena G. Stará*, Ivo Starý*, Adrian Kollárovič, Filip Teplý, David Šaman and Pavel Fiedler
Synthesis of Helicene Scaffolds via [2+2+2] Cycloisomerization of Aromatic Triynes
2003, Vol. 68, Issue 5, pp. 917–930 [Abstract] - Alois Pískala*, Naeem B. Hanna, Milena Masojídková, Miroslav Otmar, Pavel Fiedler and Karel Ubik
Synthesis of N4-Alkyl-5-azacytidines and Their Base-Pairing with Carbamoylguanidines - A Contribution to Explanation of the Mutagenicity of 2'-Deoxy-5-azacytidine
2003, Vol. 68, Issue 4, pp. 711–743 [Abstract] - Oldřich Pytela* and Jiří Kulhánek
Ortho Effect in Dissociation of Benzoic Acids with Electron-Accceptor Substituents Using the AISE Theory; Relation to para Substitution and Solvent
2002, Vol. 67, Issue 5, pp. 596–608 [Abstract] - Oldřich Pytela*, Jiří Kulhánek, Eva Jirásková and Taťjana Nevěčná
Construction of Interconnected Acidity Functions Based on ortho Substituted Anilines and N-Methylanilines as Indicators
2001, Vol. 66, Issue 11, pp. 1638–1658 [Abstract] - Otto Exner and Stanislav Böhm*
Resonance Energy in Benzene Derivatives with a Variable Functional Group
2001, Vol. 66, Issue 11, pp. 1623–1637 [Abstract] - Drahomír Hnyk*, Václav Všetečka, Ladislav Drož and Otto Exner
Charge Distribution Within 1,2-Dicarba-closo-dodecaborane: Dipole Moments of Its Phenyl Derivatives
2001, Vol. 66, Issue 9, pp. 1375–1379 [Abstract] - Irena G. Stará*, Adrian Kollárovič, Filip Teplý, Ivo Starý*, David Šaman and Pavel Fiedler
Synthesis of Aromatic Triynes as Precursors to Helicene Derivatives
2000, Vol. 65, Issue 4, pp. 577–609 [Abstract] - Ivana Císařová, Jaroslav Podlaha, Stanislav Böhm and Otto Exner*
Steric Effects and Steric Inhibition of Resonance in Benzene Derivatives: 2,3-Dimethylbenzoic Acid
2000, Vol. 65, Issue 2, pp. 216–226 [Abstract] - Jiří Kulhánek*, Oldřich Pytela and Antonín Lyčka
Chemometrical Analysis of Substituent Effects. XIII. Comparison of Substituent Effects on Dissociation and Chemical Shift in 13C NMR Spectra of Mono- and Disubstituted Benzoic Acids
2000, Vol. 65, Issue 1, pp. 106–116 [Abstract] - Karel Waisser*, Karel Palát, Jr. and Otto Exner*
Substituent Effects on Conformational Equilibria: Substituted Thiobenzanilides
1999, Vol. 64, Issue 8, pp. 1295–1306 [Abstract] - Eva Jirásková, Jiří Kulhánek, Taťjana Nevěčná* and Oldřich Pytela
Construction and Chemometric Analysis of Acidity Function in Perchloric Acid
1999, Vol. 64, Issue 8, pp. 1253–1261 [Abstract] - Irena G. Stará*, Ivo Starý*, Adrian Kollárovič, Filip Teplý, David Šaman and Pavel Fiedler
Coupling Reactions of ortho-Substituted Halobenzenes with Alkynes. The Synthesis of Phenylacetylenes and Symmetrical or Unsymmetrical 1,2-Diphenylacetylenes
1999, Vol. 64, Issue 4, pp. 649–672 [Abstract] - Naeem B. Hanna, Milena Masojídková, Pavel Fiedler and Alois Pískala
Synthesis of Some 6-Substituted 5-Azacytidines
1998, Vol. 63, Issue 2, pp. 222–230 [Abstract] - Jiří Kulhánek and Oldřich Pytela
Chemometric Analysis of Substituent Effects. XI. Solvent Effects on Dissociation of 2,6-Disubstituted Benzoic Acids
1997, Vol. 62, Issue 6, pp. 913–924 [Abstract] - Daniel Alexander, Petr Holý, Pavel Fiedler, Zdeněk Havlas and Jiří Závada
Symmetrical Tris(4,6-diamino-5-methylene-2-pyrimidones): New Building Blocks for Self-Assembly of Hollow Spherical Supramolecules Locked by Hydrogen Bonds
1996, Vol. 61, Issue 10, pp. 1464–1472 [Abstract] - Miroslav Ludwig, Patrik Pařík and Jiří Kulhánek
A Study of Transmission Effects of Sulfonyl and Carbonyl Groups
1995, Vol. 60, Issue 5, pp. 841–850 [Abstract] - Jiří Kulhánek and Oldřich Pytela
Chemometric Analysis of Substituent Effects. VI. A Study of ortho Effect in Dissociation of 2,6-Disubstituted Benzoic Acids
1995, Vol. 60, Issue 5, pp. 829–840 [Abstract] - Oldřich Pytela, Jiří Kulhánek and Miroslav Ludwig
Chemometrical Analysis of Substituent Effects. IV. Additivity of Substituent Effects in Dissociation of 3,5-Disubstituted Benzoic Acids in Organic Solvents
1994, Vol. 59, Issue 7, pp. 1637–1644 [Abstract] - Oldřich Pytela, Jiří Kulhánek, Miroslav Ludwig and Václav Říha
Chemometrical Analysis of Substituent Effects. III. Additivity of Substituent Effects in Dissociation of 3,4-Disubstituted Benzoic Acids in Organic Solvents
1994, Vol. 59, Issue 3, pp. 627–638 [Abstract] - Miroslav Ludwig, Jan Petržílek, Jiří Kulhánek and Oldřich Pytela
Effects of Substituents and Medium on Acidity of α,α-Bis(butylsulfonyl)toluenes
1994, Vol. 59, Issue 2, pp. 391–400 [Abstract] - Jiří Čermák, Miloslav Sebránek and Jiří Kulhánek
Application of Capillary GC/MS to the Analysis of Wastes from Chemical Plants. II. Identification of Naphthyl[b]thiophenes and Binaphthyls in Gaseous Releases from the Production of 2-Naphthol
1994, Vol. 59, Issue 1, pp. 119–125 [Abstract] - Alois Pískala, Milena Masojídková, David Šaman and Pavel Fiedler
Structure of 5-azacytosine nucleosides in acid solutions
1993, Vol. 58, Special Issue, pp. S26–S28 [Abstract] - Otto Exner, Martin Hradil and Jiří Mollin
Dissociation of Hydroxamic Acids: Solvent Effects
1993, Vol. 58, Issue 5, pp. 1109–1121 [Abstract] - Bernard Tinant, Jean-Paul Declercq and Otto Exner
Deformation of the Adamantane Skeleton by Substitution: Crystal Structure of 1-Methylsulfonyladamantane
1993, Vol. 58, Issue 2, pp. 373–377 [Abstract] - Václav Všetečka, Janusz Oszczapowicz and Otto Exner
Configuration and Conformation of N,N'-Diarylamidines: A Dipole Moment Study
1993, Vol. 58, Issue 1, pp. 105–112 [Abstract] - Otto Exner and Miloš Buděšínský
Carbon-13 Substituent-Induced Chemical Shifts: Monosubstituted Benzene Derivatives
1992, Vol. 57, Issue 3, pp. 497–507 [Abstract] - Otto Exner and Miloš Buděšínský*
Correlation of substituent – inducted chemical shifts of aromatic protons: Substituted benzonitriles and methyl benzoates
1991, Vol. 56, Issue 11, pp. 2234–2250 [Abstract] - Otto Exner and Ivan Mach
Polarization and apparent dipole moments of some symmetrical molecules
1991, Vol. 56, Issue 2, pp. 406–410 [Abstract] - Miloš Buděšínský, Dan Johnels, Ulf Edlund and Otto Exner
Carbon-13 substituent-induced chemical shifts in benzene derivatives: Substituted anilines
1991, Vol. 56, Issue 2, pp. 368–385 [Abstract] - Ivan Stibor, David Šaman and Pavel Fiedler
Synthesis and conformation of some 6-aminomethyluracil amides
1990, Vol. 55, Issue 11, pp. 2731–2737 [Abstract] - Otto Exner
Studies of association in solution from permitivity measurements: Statistical problems
1990, Vol. 55, Issue 6, pp. 1435–1456 [Abstract] - Bernard Tinant, Janine Dupont-Fenfau, Jean-Paul Declercq, Jaroslav Podlaha and Otto Exner
Configuration on the C=N double bond of monosubstituted amidines and amidoximes
1989, Vol. 54, Issue 12, pp. 3245–3252 [Abstract] - Drahomír Hnyk, Radek Fajgar, Václav Všetečka and Otto Exner
Dipole moments and conformation of some olefinic and ortho-substituted aromatic methoxy derivatives
1989, Vol. 54, Issue 5, pp. 1291–1298 [Abstract] - Otto Exner, Václav Jehlička and Bernard Tinant
Conformations of molecules bearing two carbonyl groups on adjacent atoms
1988, Vol. 53, Issue 6, pp. 1260–1267 [Abstract] - Otto Exner and Václav Jehlička
Conjugation within the oximino group: A semiquantitative estimation
1988, Vol. 53, Issue 5, pp. 1018–1032 [Abstract] - Bernard Tinant, Jean-Paul Declercq, Maurice Van Meerssche and Otto Exner
Structure of 5-nitro-2-methylbenzoic acid: ortho Effect of the methyl group
1988, Vol. 53, Issue 2, pp. 301–307 [Abstract] - Otto Exner and Pavel Fiedler
Conformation and electronic structure of aromatic chloroformates
1987, Vol. 52, Issue 4, pp. 970–979 [Abstract] - Otto Exner and Nedelko Motekov
Dipole moments and conformation of some aromatic benzamidoximes
1986, Vol. 51, Issue 7, pp. 1444–1449 [Abstract] - Otto Exner and Václav Jehlička
Dipole moments and conformation of α-disulphones. The gauche effect
1985, Vol. 50, Issue 10, pp. 2245–2251 [Abstract] - Juraj Koudelka, David Šaman and Otto Exner
Secondary steric effects in 2,4,6-trialkylated acetophenones and nitrobenzenes: Dipole moments and 13C NMR spectra
1985, Vol. 50, Issue 1, pp. 208–214 [Abstract] - Otto Exner and Juraj Koudelka
Principle of additivity of dipole moments: Halogen derivatives of adamantane
1985, Vol. 50, Issue 1, pp. 200–207 [Abstract] - Juraj Koudelka and Otto Exner
Principle of additivity of dipole moments: 1,3- and 1,3,5-derivatives of benzene
1985, Vol. 50, Issue 1, pp. 188–199 [Abstract] - Zdeněk Friedl, Pavel Fiedler, Ján Biroš, Věra Uchytilová, Igor Tvaroška, Stanislav Böhm and Otto Exner
Electrostatic effects on conformational equilibria: Solvation enthalpies and the reaction field theory
1984, Vol. 49, Issue 9, pp. 2050–2069 [Abstract] - Karel Kalfus, Zdeněk Friedl and Otto Exner
Electrostatic effects on ionization equilibria: Solvent dependence
1984, Vol. 49, Issue 1, pp. 179–189 [Abstract] - Otto Exner and Tomáš Juška
X-ray photoelectron spectroscopic study of sulphonamides: Charge distribution and tautomerism
1984, Vol. 49, Issue 1, pp. 51–57 [Abstract] - Otto Exner, Zdeněk Friedl and Pavel Fiedler
Electrostatic effects on conformational equilibria: Alkyl 2-cyanobenzoates and 3-cyanopropenoates
1983, Vol. 48, Issue 11, pp. 3086–3096 [Abstract] - Evangelia A. Varella, Nicholas E. Alexandrou and Otto Exner
A mass spectral study of O-aroylbenzohydroximoyl chlorides
1983, Vol. 48, Issue 9, pp. 2518–2524 [Abstract] - Otto Exner and Václav Jehlička
Conformation around several equivalent bonds. Polymethoxy derivatives of benzene
1983, Vol. 48, Issue 4, pp. 1030–1041 [Abstract] - Barbu A. Demian, Otto Exner and Aurora Sallo
Kinetics and mechanism of the azo coupling reaction of 1-aminonaphthalene-4-sulfonic acid
1983, Vol. 48, Issue 3, pp. 748–754 [Abstract] - Otto Exner, Juraj Koudelka and Soňa Vašíčková
Dipole moment of the intramolecular hydrogen bond. 2-Nitrophenol and its derivatives
1983, Vol. 48, Issue 3, pp. 735–747 [Abstract] - Evangelia A. Varella, Evangelos D. Micromastoras, Nicholas E. Alexandrou and Otto Exner
Sythesis and mass spectra of aroylbenzamidoximes
1983, Vol. 48, Issue 2, pp. 596–607 [Abstract] - Otto Exner, Dario Iarossi and Piero Vivarelli
Dipole moments induced in larger molecules. Triphenylmethyl derivatives
1982, Vol. 47, Issue 6, pp. 1733–1737 [Abstract] - Otto Exner and Karel Waisser
Dipole moment and electron distribution of the thioamide group
1982, Vol. 47, Issue 3, pp. 828–837 [Abstract] - Otto Exner and Nedelko Motekov
Configuration and conformation of amidoximes. N,N-Dialkyl derivatives
1982, Vol. 47, Issue 3, pp. 814–827 [Abstract] - Jaromír Kaválek, Pavel Fiedler, Zlata Papoušková and Otto Exner
The confirmation of trisubstituted ureas and thioureas in solution
1982, Vol. 47, Issue 1, pp. 35–44 [Abstract] - Otto Exner and Ayfer Bapçum
Dipole moments induced in larger molecule. Long-chain aliphatic esters
1982, Vol. 47, Issue 1, pp. 29–34 [Abstract] - Otto Exner
A re-examination of the Eötvös equation
1981, Vol. 46, Issue 8, pp. 1930–1940 [Abstract] - Otto Exner
A comparison of methods for determining dipole moments in solution
1981, Vol. 46, Issue 4, pp. 1002–1010 [Abstract] - Otto Exner and Václav Jehlička
The conformation of aryl carbonates. A dipole moment study
1981, Vol. 46, Issue 4, pp. 856–860 [Abstract] - Aleksandr I. Artemenko, Inga V. Tikunova, Evgenii K. Anufriev, Václav Jehlička and Otto Exner
Dipole moments of hydroxamic acids and N,O-diacylhydroxylamines
1981, Vol. 46, Issue 3, pp. 729–739 [Abstract] - Božo Plesničar and Otto Exner
Dipole moments and conformation of peroxy esters
1981, Vol. 46, Issue 2, pp. 490–497 [Abstract] - Vladimír Hanuš, Milan Hrazdira and Otto Exner
Pyrazolidine derivatives from the condensation reaction of hydrazobenzene with aliphatic aldehydes
1980, Vol. 45, Issue 9, pp. 2417–2424 [Abstract] - Otto Exner and Zlata Papoušková
Dipole moment and electron distribution of the amide group
1980, Vol. 45, Issue 9, pp. 2410–2416 [Abstract] - Otto Exner, Václav Jehlička, Luděk Vodička and Pavel Jakoubek
Dipole moments induced in larger molecules. 1- And 4-substituted diamantanes
1980, Vol. 45, Issue 9, pp. 2400–2409 [Abstract] - Zdeněk Friedl, Pavel Fiedler and Otto Exner
Electrostatic effects on conformational equilibria. Solvent dependence
1980, Vol. 45, Issue 5, pp. 1351–1360 [Abstract] - Otto Exner and Pavel Fiedler
A refined empirical model of the sigma-inductive effect
1980, Vol. 45, Issue 4, pp. 1251–1268 [Abstract] - Vladimír Král, Zdeněk Arnold, Václav Jehlička and Otto Exner
Quantum chemical study of sulfonium ylides: Structure, charge distribution and dipole moments
1980, Vol. 45, Issue 4, pp. 1236–1250 [Abstract] - Otto Exner
Substituent effects in electronic spectroscopy: Correlations with Platt spectroscopic moments
1980, Vol. 45, Issue 3, pp. 843–853 [Abstract] - Otto Exner and Jan B. F. N. Engberts
The gauche effect on conformation. α-Substituted sulfones and N-substituted sulfonamides
1979, Vol. 44, Issue 11, pp. 3378–3384 [Abstract] - Zdeněk Friedl, Jaroslav Hapala and Otto Exner
Electrostatic effects on ionization equilibria. 3-Substituted bicyclo[2,2,2]octane-1-carboxylic acids
1979, Vol. 44, Issue 10, pp. 2928–2945 [Abstract] - Otto Exner, Jorga Smolíková, Václav Jehlička and Ahmad S. Shawali
Hydrogen bonding, configuration and conformation of substituted α-oxo oximes and hydrazones
1979, Vol. 44, Issue 8, pp. 2494–2506 [Abstract] - Břetislav Princ and Otto Exner
Structure reexamination of aliphatic nitrones and their dimers
1979, Vol. 44, Issue 7, pp. 2221–2229 [Abstract] - Jiří Mollin, Pavel Fiedler, Václav Jehlička and Otto Exner
The conformation of substituted hydroxyureas and hydroxythioureas in solution
1979, Vol. 44, Issue 3, pp. 895–907 [Abstract] - Otto Exner and Zdeněk Friedl
Electrostatic effects on ionization equilibria. Carboxylic acids and amines derived from 1-indanone
1978, Vol. 43, Issue 12, pp. 3227–3240 [Abstract] - Otto Exner and Božo Plesničar
Hydrogen bonding and conformation of substituted peroxybenzoic acids as reflected in dipole moment values
1978, Vol. 43, Issue 11, pp. 3079–3086 [Abstract] - Otto Exner and Pavel Vetešník
Substituent efect in electronic spectroscopy: meta- and para-substituted benzonitriles
1978, Vol. 43, Issue 10, pp. 2763–2778 [Abstract] - Božo Plesničar, Jorga Smolíková, Václav Jehlička and Otto Exner
Dipole moment of the intramolecular hydrogen bond. Substituted α-hydroxyacetophenones
1978, Vol. 43, Issue 10, pp. 2754–2762 [Abstract] - Otto Exner and Nedelko Motekov
Configuration and conformation of amidoximes. Aromatic derivatives with a free amino group
1978, Vol. 43, Issue 10, pp. 2740–2753 [Abstract] - Zdeněk Friedl and Otto Exner
Electrostatic effects on conformational equilibria 3-substituted benzonitriles
1978, Vol. 43, Issue 10, pp. 2591–2599 [Abstract] - Miroslav Svoboda, Miroslava Synáčková, Zdeněk Samek, Pavel Fiedler and Zdeněk Arnold
N,N-Dimethyl-N-alkylammoniodiformylmethylides: New group of stabilised aliphatic ylides
1978, Vol. 43, Issue 5, pp. 1261–1275 [Abstract]