Collect. Czech. Chem. Commun. 1985, 50, 208-214
https://doi.org/10.1135/cccc19850208

Secondary steric effects in 2,4,6-trialkylated acetophenones and nitrobenzenes: Dipole moments and 13C NMR spectra

Juraj Koudelka, David Šaman and Otto Exner

Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6

Individual author index pages


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    1988, Vol. 53, Issue 6, pp. 1260–1267 [Abstract]
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    1987, Vol. 52, Issue 10, pp. 2482–2491 [Abstract]
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    Conformation and electronic structure of aromatic chloroformates
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  • Miloš Buděšínský and David Šaman
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    1987, Vol. 52, Issue 2, pp. 453–475 [Abstract]
  • Jaroslav Kopecký, David Šaman and Ladislav Novotný
    Methylation of substituted 1,4-benzoquinones
    1987, Vol. 52, Issue 1, pp. 228–232 [Abstract]
  • Jaroslav Kopecký, David Šaman and Ladislav Novotný
    Methoxylation of substituted 1,4-benzoquinones
    1987, Vol. 52, Issue 1, pp. 223–227 [Abstract]
  • Ludvík Streinz, Irena Valterová, Zdeněk Wimmer, Miloš Buděšínský, David Šaman, Jitka Kohoutová, Miroslav Romaňuk and Jan Vrkoč
    Direct esterification of α-methoxy-α-(trifluoromethyl)phenylacetic acid
    1986, Vol. 51, Issue 10, pp. 2207–2213 [Abstract]
  • Otto Exner and Nedelko Motekov
    Dipole moments and conformation of some aromatic benzamidoximes
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  • Zdenka Smítalová, Miloš Buděšínský, David Šaman and Miroslav Holub
    Minor sesquiterpenic lactones of Laser trilobum (L) BORKH. species
    1986, Vol. 51, Issue 6, pp. 1323–1339 [Abstract]
  • Miroslav Holub, Miloš Buděšínský, Zdenka Smítalová, David Šaman and Urszula Rychłewska
    Structure of isosilerolide, relative and absolute configuration of silerolide and lasolide - Sesquiterpenic lactones of new stereoisomeric type of eudesmanolides
    1986, Vol. 51, Issue 4, pp. 903–929 [Abstract]
  • Dalimil Dvořák, Miloš Buděšínský, David Šaman and Zdeněk Arnold
    Benzylidenemalonaldehydes: A redox reaction during the attempted cycloaddition on nitrosobenzene
    1985, Vol. 50, Issue 10, pp. 2260–2264 [Abstract]
  • Otto Exner and Václav Jehlička
    Dipole moments and conformation of α-disulphones. The gauche effect
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  • Miroslav Holub, Miloš Buděšínský, Zdenka Smítalová, David Šaman and Urszula Rychłewska
    Structure of laserolide and isolaserolide: Revision of constitution and determination of relative and absolute configuration
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  • Otto Exner and Juraj Koudelka
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  • Wojciech Kroszczyṅski, Włodzimierz M. Daniewski, Miloš Buděšínský, David Šaman, Halina Grabarczyk, Bohdan Drożdż and Miroslav Holub
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  • Karel Konečný, Milan Streibl, Soňa Vašíčková, Miloš Buděšínský, David Šaman, Karel Ubik and Vlastimil Herout
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  • 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
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  • Jaroslav Kopecký, David Šaman, Tomáš Vaněk and Ladislav Novotný
    Components of the wood-rotting fungus Sarcodontia setosa
    1984, Vol. 49, Issue 7, pp. 1622–1626 [Abstract]
  • Miloš Buděšínský, Miroslav Holub, David Šaman, Zdenka Smítalová, Ayhan Ulubelen and Sevil Öksüz
    Structure of istanbulin A and istanbulin B - two sesquiterpenic lactones from Smyrnium olusatrum L.
    1984, Vol. 49, Issue 5, pp. 1311–1317 [Abstract]
  • Zdenka Smítalová, Miloš Buděšínský, David Šaman, Soňa Vašíčková and Miroslav Holub
    Components of the extract from the underground parts of Laserpitium siler L. of slovenian origin, mainly sesquiterpenic lactones
    1984, Vol. 49, Issue 4, pp. 852–870 [Abstract]
  • Miloš Buděšínský, David Šaman, Gerard Nowak, Bohdan Drożdż and Miroslav Holub
    9α-Hydroxyparthenolide from Zoegea baldschuanica C. WINKL. and its absolute configuration
    1984, Vol. 49, Issue 3, pp. 637–641 [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]
  • Miroslav Holub, Zdeněk Samek, Miloš Buděšínský, David Šaman, Ełżbieta Błoszyk and Bohdan Drożdż
    8α-Hydroxybalchanin - A new sesquiterpenic lactone from Leucanthemella serotina (L.) TZVEL.
    1982, Vol. 47, Issue 11, pp. 2927–2931 [Abstract]
  • Miloš Buděšínský, David Šaman and Zdeněk Wimmer
    Conformation studies of isomeric 1-acyloxy-2-(4-methoxybenzyl)-cyclohexanes by 1H NMR spectroscopy
    1982, Vol. 47, Issue 10, pp. 2763–2767 [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]