Collect. Czech. Chem. Commun.
1982, 47, 35-44
https://doi.org/10.1135/cccc19820035
The confirmation of trisubstituted ureas and thioureas in solution
Jaromír Kaváleka, Pavel Fiedlerb, Zlata Papouškovác and Otto Exnerb
a Department of Organic Chemistry, Institute of Chemical Technology, 532 10 Pardubice
b Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6
c Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6 - Suchdol
Individual author index pages
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Revision of the Dual-Substituent-Parameter Treatment; Reaction Series with a Donor Reaction Centre
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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
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Interaction of Polar Groups with a Bulky Hydrocarbon Residue: Polarizability and Steric Effects
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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
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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] - 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] - Jaromír Mindl*, Oldřich Hrabík, Vojeslav Štěrba and Jaromír Kaválek
Cyclization of Substituted Phenyl N-(2-Hydroxybenzyl)carbamates in Aprotic Solvents. Synthesis of 4H-1,3-Benzoxazin-2(3H)-ones
2000, Vol. 65, Issue 8, pp. 1262–1272 [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] - Jaromír Mindl*, Jaromír Kaválek, Helena Straková and Vojeslav Štěrba
Kinetics of Base-Catalysed Hydrolysis and Cyclisation of Substituted Acetamide and Benzamide O-(Phenoxycarbonyl)oximes
1999, Vol. 64, Issue 10, pp. 1641–1653 [Abstract] - Miloš Sedlák, Jiří Hanusek, Radim Bína, Jaromír Kaválek and Vladimír Macháček*
Kinetics and Mechanism of the Formation and Decomposition of Imidazolin-4-ones from 2-(N-Benzoylamino)alkanamides in Aqueous Medium
1999, Vol. 64, Issue 10, pp. 1629–1640 [Abstract] - Pavel Fiedler, Jiří Kulhánek, Michèle Decouzon, Jean-François Gal, Pierre-Charles Maria and Otto Exner*
Steric Effects and Steric Inhibition of Resonance in Isopropylbenzoic Acids in the Gas Phase and in Solution
1999, Vol. 64, Issue 9, pp. 1433–1447 [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] - 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] - Libor Dušek*, Jaromír Kaválek and Vojeslav Štěrba
Kinetics of Methanolysis of Substituted Benzamide O-(Phenoxycarbonyl)- and O-(Alkoxycarbonyl)oximes Catalyzed by Sodium Methanolate
1999, Vol. 64, Issue 2, pp. 265–287 [Abstract] - Miloš Sedlák, Jaromír Kaválek, Petr Mitaš and Vladimír Macháček
Kinetics and Mechanism of Cyclization of Substituted 2-(Benzoylamino)alkanamides in Strongly Basic Medium
1998, Vol. 63, Issue 3, pp. 394–406 [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] - Petr Mitaš, Miloš Sedlák and Jaromír Kaválek
Substituent Effect on Acidity of Substituted 2-(4-Nitrobenzoylamino)alkanamides in Methanol-Dimethyl Sulfoxide Mixtures
1998, Vol. 63, Issue 1, pp. 85–93 [Abstract] - Petr Mitaš, Jaromír Kaválek and Oldřich Pytela
Dissociation of Amides in Strongly Basic Medium of Sodium Methoxide in Dimethyl Sulfoxide-Methanol Mixtures
1997, Vol. 62, Issue 10, pp. 1562–1576 [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] - Miloš Sedlák, Aleš Halama, Jaromír Kaválek, Vladimír Macháček, Petr Mitaš and Vojeslav Štěrba
Preparation and NMR Spectra of Substituted 2-(4-Nitrophenyl)imidazolinones
1996, Vol. 61, Issue 6, pp. 910–920 [Abstract] - Miloš Sedlák, Aleš Halama, Jaromír Kaválek, Vladimír Macháček and Vojeslav Štěrba
Preparation, 1H and 13C NMR Spectra of Substituted 2-Benzoylaminocarboxamides
1995, Vol. 60, Issue 1, pp. 150–160 [Abstract] - Jaromír Kaválek, Vladimír Macháček and Vojeslav Štěrba
Coupling Kinetics of 4-Sulfobenzenediazonium Ion with 2,4-Thiazolidinedione, Its 3-Methyl Derivative and 3-Methyl-5-isoxazolone
1994, Vol. 59, Issue 9, pp. 2022–2028 [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] - Jaromír Kaválek, Vladimír Macháček, Miloš Sedlák and Vojeslav Štěrba
Study of Cyclization of 1-Benzoyl-3-methyl-3-(2-methoxycarbonylphenyl)thiourea to 1-Methyl-2-thioxo-4-quinazolone
1993, Vol. 58, Issue 5, pp. 1122–1132 [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] - Jaromír Kaválek, Vladimír Macháček, Miloš Sedlák and Vojeslav Štěrba
Kinetics and Mechanism of Cyclization of N-(2-Methoxycarbonylphenyl)-N-methylsulfonamide to 1-Methyl-(1H)-2,1,3-benzothiadiazine-4(3H)-one-2,2-dioxide
1992, Vol. 57, Issue 6, pp. 1282–1290 [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] - Jaromír Kaválek, Vladimír Macháček, Miloš Sedlák and Vojeslav Štěrba
Kinetics and mechanism of cyclization of N-(2-methoxycarbonylphenyl)-N’-methylsulphonamide to 3-methyl-(1H)-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide
1991, Vol. 56, Issue 8, pp. 1701–1710 [Abstract] - Otto Exner and Ivan Mach
Polarization and apparent dipole moments of some symmetrical molecules
1991, Vol. 56, Issue 2, pp. 406–410 [Abstract] - Jaroslava Horáčková, Jaromír Kaválek, Jiří Kulič and Vojeslav Štěrba
Azo coupling kinetics of benzenediazonium ions with citrazinic acid
1991, Vol. 56, Issue 2, pp. 386–397 [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] - Oldřich Pytela, Taťjana Nevěčná and Jaromír Kaválek
Reactivity of proton and general acid with 1,3-bis-(4-methylphenyl)triazene in aqueous methanol
1990, Vol. 55, Issue 11, pp. 2701–2706 [Abstract] - Otto Exner
Studies of association in solution from permitivity measurements: Statistical problems
1990, Vol. 55, Issue 6, pp. 1435–1456 [Abstract] - Jaromír Kaválek, Ulrika Králíková, Vladimír Macháček, Miloš Sedlák and Vojeslav Štěrba
Kinetics and mechanism of solvolysis of N-aryl sulfuric diamides
1990, Vol. 55, Issue 1, pp. 202–222 [Abstract] - Taťjana Nevěčná, Oldřich Pytela, Miroslav Ludwig and Jaromír Kaválek
Solvent effects on kinetics and mechanism of acid-catalyzed decomposition of 1,3-bis(4-methylphenyl)triazene I. Reactions in alcohols
1990, Vol. 55, Issue 1, pp. 147–155 [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] - Vítězslav Zima, Oldřich Pytela, Jaromír Kaválek and Miroslav Večeřa
Reactivity of nucleophiles in dimethyl sulfoxide and its comparison with nucleophilic reactivity in protic medium
1989, Vol. 54, Issue 10, pp. 2715–2720 [Abstract] - Jaromír Kaválek, Lubomír Kacetl and Marcela Kaválková
Kinetics of methanolysis of 1-(2-halogeno and 2,6-dihalogenobenzoyl)-3-(4-chlorophenyl)ureas
1989, Vol. 54, Issue 5, pp. 1363–1369 [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] - Jaromír Kaválek, Vladimír Macháček, Gabriela Svobodová and Vojeslav Štěrba
Kinetics and mechanism of reversible, base-catalyzed ring closure of 3-(methoxycarbonyl)propionanilide and O-(methoxycarbonylmethyl)-N-phenylcarbamate
1989, Vol. 54, Issue 4, pp. 1005–1011 [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] - Jaromír Kaválek, Vladimír Macháček, Vojeslav Štěrba and Antonín Lyčka
Formation of N-methyl-2-nitroso-4,6-dinitroaniline from methyl ester of N-methyl-N-(2,4,6-trinitrophenyl)glycine
1988, Vol. 53, Issue 5, pp. 1033–1043 [Abstract] - Otto Exner and Václav Jehlička
Conjugation within the oximino group: A semiquantitative estimation
1988, Vol. 53, Issue 5, pp. 1018–1032 [Abstract] - Zdeněk Zelinger, Zlata Papoušková, Marie Jakoubková and Pavel Engst
Determination of trace quantities of freon by laser optoacoustic detection and classical infrared spectroscopy
1988, Vol. 53, Issue 4, pp. 749–755 [Abstract] - Jaromír Kaválek, Vladimír Macháček, Makky M. M. Hassanien and Vojeslav Štěrba
Base-catalyzed formation of spiro adduct from N-methyl-N-(2,4,6-trinitrophenyl)glycinamide, the smiles rearrangement of the amide in methanol
1988, Vol. 53, Issue 3, pp. 601–618 [Abstract] - Jaromír Kaválek, Josef Jirman, Vladimír Macháček and Vojeslav Štěrba
The methanolysis kinetics and dissociation constants of 1-(subst. benzoyl)-3-phenylthioureas
1988, Vol. 53, Issue 3, pp. 593–600 [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] - Jaromír Kaválek, Vladimír Macháček, Gabriela Svobodová and Vojeslav Štěrba
Kinetics of acid-catalyzed cyclization of substituted hydantoinamides to substituted hydantoins
1987, Vol. 52, Issue 8, pp. 1999–2004 [Abstract] - Jaromír Kaválek, Josef Jirman, Vladimír Macháček and Vojeslav Štěrba
An anomalous effect of methyl group on acidity of acylthioureas
1987, Vol. 52, Issue 8, pp. 1992–1998 [Abstract] - Jaromír Kaválek, Ludmila Hejtmánková and Vojeslav Štěrba
Kinetics and mechanism of solvolysis of substituted phenyl N-phenylbenzimidoesters
1987, Vol. 52, Issue 5, pp. 1285–1297 [Abstract] - Otto Exner and Pavel Fiedler
Conformation and electronic structure of aromatic chloroformates
1987, Vol. 52, Issue 4, pp. 970–979 [Abstract] - Jaromír Kaválek, Josef Jirman and Vojeslav Štěrba
Reactions of 1,3-diacylthioureas with methoxide ion and with amines
1987, Vol. 52, Issue 1, pp. 120–131 [Abstract] - Jaromír Kaválek, Josef Panchartek, Tomáš Potěšil and Vojeslav Štěrba
Kinetics of the reaction of guanyl-O-methylisourea hydrochloride with dimethylformamide dimethylacetal
1986, Vol. 51, Issue 9, pp. 1964–1971 [Abstract] - Otto Exner and Nedelko Motekov
Dipole moments and conformation of some aromatic benzamidoximes
1986, Vol. 51, Issue 7, pp. 1444–1449 [Abstract] - Jaromír Kaválek, Josef Panchartek, Tomáš Potěšil and Vojeslav Štěrba
Solvolysis kinetics of ethyl 3-ethoxy-3-iminopropanoate
1986, Vol. 51, Issue 3, pp. 677–683 [Abstract] - Jaromír Kaválek, Vladimír Macháček, Gabriela Svobodová and Vojeslav Štěrba
Base catalyzed cyclization of substituted esters of hydantoic and thiohydantoic acids
1986, Vol. 51, Issue 2, pp. 375–390 [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] - Jaromír Kaválek, Josef Jirman and Vojeslav Štěrba
Kinetics and mechanism of rearrangement and methanolysis of acylphenylthioureas
1985, Vol. 50, Issue 3, pp. 766–778 [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] - Jaromír Kaválek, Said El Bahaie and Vojeslav Štěrba
Kinetics and mechanism of methanolysis of benzoyl derivatives of substituted phenylureas and phenylthioureas
1984, Vol. 49, Issue 9, pp. 2103–2110 [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] - Antonín Lyčka and Jaromír Kaválek
13C, 15N, and 19F NMR spectra of 4-fluoro-(3´ or 4´-substituted) azobenzenes
1984, Vol. 49, Issue 1, pp. 58–64 [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] - Jaromír Kaválek, Vladimír Macháček and Vojeslav Štěrba
Reactions of ethyl 2-alkyl-3-oxobutanoate with thiourea and methylthiourea
1983, Vol. 48, Issue 7, pp. 1872–1877 [Abstract] - Jaromír Kaválek, Vojeslav Štěrba and Said El Bahaie
Dissociation constants of m- and p-substituted phenylthioureas and ureas in water and in methanol
1983, Vol. 48, Issue 5, pp. 1430–1434 [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] - Jaromír Kaválek, Tomáš Potěšil and Vojeslav Štěrba
Cyclization kinetics and mechanism of N-benzoyl-N'-(1,2-dimethyl-3-oxo-1-butenyl)thiourea
1983, Vol. 48, Issue 2, pp. 578–585 [Abstract] - Jaromír Kaválek, Jaroslav Novák and Vojeslav Štěrba
Kinetics of hydrolysis and rearrangements of S-acylthiouronium salts
1982, Vol. 47, Issue 10, pp. 2702–2710 [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, Jiří Hruška and Vojeslav Štěrba
Kinetics of cyclization of 1-phenyl-3-(1,2-dimethyl-3-oxo-1-butenyl)urea and ethyl 2-methyl-3-N-(N'-phenylureido)-2-butenoate
1982, Vol. 47, Issue 2, pp. 518–522 [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] - Jaromír Kaválek, Milan Kotyk, Said El Bahaie and Vojeslav Štěrba
Reactions of N-benzoyl isothiocyanate with anthranilic acid and methyl anthranilate
1981, Vol. 46, Issue 1, pp. 246–255 [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] - Marie Jakoubková, Zlata Papoušková and Václav Chvalovský
ν(C-F) in some organosilicon compounds
1980, Vol. 45, Issue 3, pp. 854–860 [Abstract] - Otto Exner
Substituent effects in electronic spectroscopy: Correlations with Platt spectroscopic moments
1980, Vol. 45, Issue 3, pp. 843–853 [Abstract] - Jaromír Kaválek, Said El-Bahaie, Vladimír Macháček and Vojeslav Štěrba
Study of reaction of thiourea with ethyl 3-oxobutanoate
1980, Vol. 45, Issue 3, pp. 732–739 [Abstract] - Jaromír Kaválek, Said El-Bahaie and Vojeslav Štěrba
Reactions of thiourea with chloro- and bromoacetic acids
1980, Vol. 45, Issue 1, pp. 263–268 [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] - Jaromír Kaválek, Karel Janák and Vojeslav Štěrba
Kinetics of reaction of 5-phenyl-1,3,4-thiadiazol-2-diazonium ion with water
1979, Vol. 44, Issue 10, pp. 3102–3110 [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] - Zlata Papoušková, Vlasta Fialová and Václav Chvalovský
The effect of solvation by acetone on the basicity of silylalkylamines
1979, Vol. 44, Issue 9, pp. 2828–2831 [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] - Jaromír Kaválek, Ahmad Ashfaq and Vojeslav Štěrba
Reactions of 1-substituted 2,4,6-trinitrobenzenes with nucleophiles
1979, Vol. 44, Issue 5, pp. 1453–1459 [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] - Jaromír Kaválek, Said El-Bahei and Vojeslav Štěrba
Hydrolysis kinetics of 4-amino-3-pentene-2-one and its N-substituted derivatives
1978, Vol. 43, Issue 10, pp. 2732–2739 [Abstract] - Zdeněk Friedl and Otto Exner
Electrostatic effects on conformational equilibria 3-substituted benzonitriles
1978, Vol. 43, Issue 10, pp. 2591–2599 [Abstract] - Jaromír Kaválek, Miroslav Pastrnek and Vojeslav Štěrba
Reactions of 2,4,6-trinitrochlorobenzene with dimethyl malonate anion in methanol and methanol-dimethyl sulphoxide mixture
1978, Vol. 43, Issue 5, pp. 1401–1409 [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]