Collect. Czech. Chem. Commun. 1963, 28, 1625-1628
https://doi.org/10.1135/cccc19631625

Studium der Tautomerie der 2,6-Dihydroxydinicotinsäure-Ester mittels Infrarotspektroskopie

J. Piťha and J. Kuthan

Individual author index pages


Other CCCC articles of these authors

  • J. Kuthan, P. Nesvadba, Z. Donnerová and P. Trška
    Contribution to the study of cyclocondensations of cyanoacetic acid derivatives with benzylideneacetophenone
    1977, Vol. 42, Issue 7, pp. 2152–2160 [Abstract]
  • J. Kuthan and L. Musil
    EHT study of 1-methyl-1,4-dihydronicotinamide
    1977, Vol. 42, Issue 3, pp. 857–866 [Abstract]
  • V. Skála, L. Musil and J. Kuthan
    Contribution to quantum-chemical interpretation of 3-aminocarbonylpyridinium cation reactivity
    1977, Vol. 42, Issue 3, pp. 843–856 [Abstract]
  • D. Ilavský and J. Kuthan
    π-Electronic structure and electronic spectra of methylated 3,5-dicyanopyridines
    1977, Vol. 42, Issue 2, pp. 662–670 [Abstract]
  • V. Skála, J. Volke, V. Oháňka and J. Kuthan
    Electrochemical oxidation of 3,5-difunctional 1,4-dihydropyridine derivatives
    1977, Vol. 42, Issue 1, pp. 292–305 [Abstract]
  • J. Kuthan, L. Musil and V. Jehlička
    The use of dipole moments in the conformational analysis of nicotinic acid derivatives
    1977, Vol. 42, Issue 1, pp. 283–291 [Abstract]
  • J. Kuthan and L. Musil
    Semiempirical MO study of nicotinic acid and of its methyl ester at the level of all valence electrons
    1976, Vol. 41, Issue 11, pp. 3282–3288 [Abstract]
  • J. Dědina, J. Kuthan, J. Paleček and J. Schraml
    1H-NMR spectra and nuclear Overhauser effect in E and Z isomers of 3-substituted 3-aminoacrylonitriles
    1975, Vol. 40, Issue 11, pp. 3476–3490 [Abstract]
  • J. Kuthan and L. Musil
    A CNDO study of nicotinamide and 1-methyl-1,4-dihydronicotinamide
    1975, Vol. 40, Issue 10, pp. 3169–3176 [Abstract]
  • J. Paleček and J. Kuthan
    Mass spectra of N-substituted 2,4,4,6-tetramethyl-3,5-dicyano-1,4-dihydropyridines
    1975, Vol. 40, Issue 9, pp. 2632–2641 [Abstract]
  • V. Skála, O. Uhlová and J. Kuthan
    Stilbazoles derived from 2,6-dimethyl-3,5-dicyanopyridine and their 1,4-dihydro derivatives
    1975, Vol. 40, Issue 6, pp. 1892–1900 [Abstract]
  • J. Kuthan and J. Paleček
    Spectroscopic properties of 1-substituted 3,5-dicyano-2,4,4,6-tetramethyl-1,4-dihydropyridines
    1974, Vol. 39, Issue 12, pp. 3711–3719 [Abstract]
  • J. Kuthan, J. Volke, V. Volkeová and V. Šimonek
    Polarographic reduction of some 3,5-difunctional dihydropyridine derivatives
    1974, Vol. 39, Issue 12, pp. 3438–3448 [Abstract]
  • J. Kuthan, V. Skála, M. Ichová and J. Paleček
    Reaction of 1,3,5-tricyanobenzene with complex hydrides
    1974, Vol. 39, Issue 7, pp. 1872–1879 [Abstract]
  • J. Kuthan, J. Paleček and L. Vavruška
    Condensation reactions of benzoylacetonitrile
    1974, Vol. 39, Issue 3, pp. 854–860 [Abstract]
  • V. Skála, J. Kuthan, J. Dědina and J. Schraml
    Reaction of some dicyanopyridines with methylmagnesium iodide. Observation of the nuclear Overhauser effect in the presence of NMR shift reagent
    1974, Vol. 39, Issue 3, pp. 834–841 [Abstract]
  • J. Kuthan, J. Paleček and L. Musil
    The electronic spectra of 1,3-diazaadamantanoid derivatives. The interaction of isolated chromophors
    1974, Vol. 39, Issue 3, pp. 750–766 [Abstract]
  • J. Kuthan, J. Paleček and L. Musil
    The Wittig reaction of 2-adamantanone and 1,3-diaza-6-adamantanone
    1973, Vol. 38, Issue 11, pp. 3491–3495 [Abstract]
  • J. Kuthan, V. Skála and L. Musil
    On dihydropyridines. XXVIII. A PPP study of the electronic spectra of 3,5-dicyanodihydropyridines and corresponding enaminonitriles
    1973, Vol. 38, Issue 11, pp. 3479–3490 [Abstract]
  • J. Kuthan, L. Musil and V. Skála
    Extended Hückel conformational analysis of nicotinamide
    1972, Vol. 37, Issue 9, pp. 2933–2945 [Abstract]
  • J. Paleček, L. Vavruška and J. Kuthan
    On dihydropyridines. XXVII. The reaction of 3,5-diacetylpyridine with complex hydrides and organometallic reagents
    1972, Vol. 37, Issue 8, pp. 2764–2770 [Abstract]
  • J. Kuthan, L. Musil and A. Kohoutová
    On dihydropyridines. XXIV. Partial hydrogenation of some 3,5-dicyanopyridines
    1971, Vol. 36, Issue 12, pp. 3992–3999 [Abstract]
  • O. Paleta, V. Skála and J. Kuthan
    Inadequacy of PI-approximation in HMO study of reactivity of fluorosubstituted benzenoid hydrocarbons
    1971, Vol. 36, Issue 10, pp. 3527–3538 [Abstract]
  • J. Kuthan, N. V. Koshmina and V. Skála
    Semiempirical SCF MO study of methylpyridines
    1971, Vol. 36, Issue 5, pp. 1832–1842 [Abstract]
  • J. Kuthan and M. Ichová
    HMO study of monohydroxypyridines and their benzoderivatives
    1971, Vol. 36, Issue 4, pp. 1413–1425 [Abstract]
  • J. Kuthan, N. V. Koshmina and M. Ferles
    Studies in the pyridine series. XXXVII. π-Electron structure and reactivity of 1-methylpyridinium salts
    1970, Vol. 35, Issue 12, pp. 3825–3830 [Abstract]
  • J. Kuthan, N. V. Koshmina, J. Paleček and V. Skála
    Thermal transformations of pyridinium salts, an HMO treatment
    1970, Vol. 35, Issue 9, pp. 2787–2796 [Abstract]
  • J. Kuthan, A. Kohoutová and L. Helešic
    On hydropyridines. XXIII. Pimary isolable adducts of lithium aluminium hydride and methylmagnesium iodide with 3,5-dicyanopyridines
    1970, Vol. 35, Issue 9, pp. 2776–2786 [Abstract]
  • V. Skála and J. Kuthan
    Molecular orbital study of the NMR and electronic spectra of monocyanopyridines, dicyanopyridines, and 2,4,6-tricyanopyridine
    1970, Vol. 35, Issue 8, pp. 2378–2391 [Abstract]
  • J. Kuthan
    NMR spectra and the reactivity of organic compounds. III. Proton chemical shifts and the reactivity of benzenoid hydrocarbons
    1970, Vol. 35, Issue 2, pp. 714–720 [Abstract]
  • V. Skála and J. Kuthan
    Some additive relationships in the LCAO-MO calculations of cyanopyridines
    1970, Vol. 35, Issue 1, pp. 354–357 [Abstract]
  • V. Skála, J. Hlavatý and J. Kuthan
    Some spectral properties of 1,3,5-tricyanobenzene
    1970, Vol. 35, Issue 1, pp. 350–354 [Abstract]
  • J. Paleček and J. Kuthan
    On dihydropyridines. XXII. Reaction products of acetaldehyde, benzaldehyde and acetone with the sodium salt of hydroxymethyleneacetone
    1969, Vol. 34, Issue 11, pp. 3336–3342 [Abstract]
  • J. Kuthan and L. Musil
    On dihydropyridines. XXI. Interpretation of formation of dihydroderivatives from alkylated 3,5-dicyanopyridines based on Wheland's localization energies
    1969, Vol. 34, Issue 10, pp. 3173–3178 [Abstract]
  • J. Paleček, K. Vondra and J. Kuthan
    On dihydropyridines. XX. Reactions of organomagnesium and organolithium reagents with 3,5-dicyano-2,6-dimethylpyridine
    1969, Vol. 34, Issue 10, pp. 2991–2998 [Abstract]
  • J. Kuthan
    HMO study of some enaminonitriles
    1969, Vol. 34, Issue 10, pp. 2942–2951 [Abstract]
  • J. Kuthan, Z. Donnerová and V. Skála
    NMR spectra and the reactivity of organic compounds. II. Proton chemical shifts, theoretical and experimental reactivity of some non-alternant hydrocarbons and ions
    1969, Vol. 34, Issue 8, pp. 2398–2408 [Abstract]
  • J. Kuthan, V. Skála and J. Paleček
    Localization energies of methyl homologues of pyridine
    1969, Vol. 34, Issue 8, pp. 2223–2234 [Abstract]
  • J. Kuthan and J. Paleček
    On dihydropyridines. XIX. On the π-electronic structure of Hantzsch's dihydropyridines
    1969, Vol. 34, Issue 4, pp. 1339–1342 [Abstract]
  • J. Kuthan and V. Skála
    On dihydropyridines. XVIII. Atom localization energies of monocyanopyridines and symmetrical dicyanopyridines
    1969, Vol. 34, Issue 4, pp. 1335–1339 [Abstract]
  • J. Kuthan and J. Procházková
    On dihydropyridines. XVII. π-Electronic structure and reactivity of alkyl 3,5-dicyanopyridines
    1969, Vol. 34, Issue 4, pp. 1190–1203 [Abstract]
  • J. Paleček, V. Skála and J. Kuthan
    Quantitative correlation of the radical substitution of pyridine and its homologues with HMO reactivity indices
    1969, Vol. 34, Issue 3, pp. 1110–1112 [Abstract]
  • J. Paleček, L. Ptáčková and J. Kuthan
    On hydropyridines. XVI. Reactions of esters of dinicotinic acid with sodium borohydride, lithium aluminum hydride and methylmagnesium iodide
    1969, Vol. 34, Issue 2, pp. 427–441 [Abstract]
  • J. Kuthan, J. Procházková and E. Janečková
    On dihydropyridines. XV. Reactions of some 3,5-dicyanopyridines with complex aluminum hydrides
    1968, Vol. 33, Issue 11, pp. 3558–3564 [Abstract]
  • J. Kuthan, J. Paleček, J. Procházková and V. Skála
    An HMO study of methyl homologues of pyridine
    1968, Vol. 33, Issue 10, pp. 3138–3153 [Abstract]
  • J. Kuthan
    NMR spectra and the reactivity of organic compounds. I. Correlations between proton chemical shifts of alternant hydrocarbons and HMO chemical reactivity indices
    1968, Vol. 33, Issue 4, pp. 1220–1228 [Abstract]
  • J. Kuthan, A. Kozlik and F. Petrů
    The absolute configuration of 2,8-dimethyl-2-ethyl-1,2,3,4-tetrahydrophenanthrene, a dehydrogenation product of some diterpenoids
    1968, Vol. 33, Issue 2, pp. 614–619 [Abstract]
  • M. Holík, V. Skála and J. Kuthan
    Electronic structure and chemical reactivity of 1-methyl-2-pyridones
    1968, Vol. 33, Issue 2, pp. 394–404 [Abstract]
  • J. Kuthan, V. Jehlička and E. Hakr
    Über die Struktur der aromatischen Enaminonitrile
    1967, Vol. 32, Issue 12, pp. 4309–4318 [Abstract]
  • J. Kuthan and J. Hakr
    On dihydropyridines. XIV. Substituted 2,6-diphenyl-3,5-dicyano-1,4-dihydropyridines
    1967, Vol. 32, Issue 4, pp. 1438–1448 [Abstract]
  • J. Kuthan
    On dihydropyridines. XIII. Attempt at a theoretical interpretation of the electronic structure of 3,5-dicyano-1,2-dihydropyridine and 3,5-dicyano-1,4-dihydropyridine
    1967, Vol. 32, Issue 3, pp. 1280–1284 [Abstract]
  • J. Kuthan, A. Kozlik and F. Petrů
    New synthesis of (±)-2,8-dimethyl-2-ethyl-1,2,3,4-tetrahydrophenanthrene, the dehydrogenation product of some diterpenoids
    1966, Vol. 31, Issue 11, pp. 4425–4431 [Abstract]
  • J. Kuthan and J. Procházková
    Darstellung von 2,4,6-Tricyan-1,3,5-trimethylbenzol aus 2-Aminocrotonitril
    1966, Vol. 31, Issue 9, pp. 3832–3836 [Abstract]
  • J. Kuthan
    On dihydropyridines. XII. Electronic structure and reactivity of monocyanopyridines and symmetric dicyanopyridines
    1966, Vol. 31, Issue 9, pp. 3593–3606 [Abstract]
  • J. Kuthan and J. Paleček
    On dihydropyridines. XI. Use of 3,5-diacetyl-1,4-dihydropyridine for the synthesis of dinicotinic acid derivatives
    1966, Vol. 31, Issue 6, pp. 2618–2622 [Abstract]
  • J. Piťha, P. Fiedler and J. Gut
    Nucleic acids components and their analogues. LXXXII. The fine structure of 6-azaisocytosine and its derivatives
    1966, Vol. 31, Issue 4, pp. 1864–1871 [Abstract]
  • J. Kuthan and E. Janečková
    Über Dihydropyridine X. Reduktion unsymmetrisch alkylierter 3,5-Dicyanpyridine mit Natriumborhydrid
    1965, Vol. 30, Issue 11, pp. 3711–3717 [Abstract]
  • P. Piťhová, A. Pískala, J. Piťha and F. Šorm
    Nucleic acids components and their analogues. LXVI. Hydrolysis of 5-azacytidine and its connection with biological activity
    1965, Vol. 30, Issue 8, pp. 2801–2811 [Abstract]
  • J. Kuthan and R. Bartoníčková
    Über Dihydropyridine IX. Reaktionen verschiedener magnesium- und Lithiumorganischer verbindungen mit 3,5-Dicyan-4-methylpyridin
    1965, Vol. 30, Issue 8, pp. 2609–2614 [Abstract]
  • J. Piťha and S. Vašíčková
    Stretching vibration of N-H bond in uracil, its derivatives and analogues
    1965, Vol. 30, Issue 6, pp. 1792–1798 [Abstract]
  • P. Piťhová, A. Pískala, J. Piťha and F. Šorm
    Nucleic acid components and their analogues. LVIII. 5-Azacytidine and related compounds; Study of structure, tautomerism and possibilities of pairing with purine derivatives
    1965, Vol. 30, Issue 5, pp. 1626–1634 [Abstract]
  • P. Piťhová, A. Pískala, J. Piťha and F. Šorm
    Nucleic acids components and their analogues. LVI. 5-Azauracil and its N-methyl derivatives, formation and decomposition in aqueous solutions, structure of compounds with alcohols
    1965, Vol. 30, Issue 1, pp. 90–98 [Abstract]
  • J. Kuthan and E. Janečková
    On dihydropyridines. VII. Reactions of symmetrically alkylated 3,5-dicyano-pyridines with sodium boron hydride
    1964, Vol. 29, Issue 7, pp. 1654–1662 [Abstract]
  • E. Janečková and J. Kuthan
    Über Dihydropyridine VI. Bestimmung der 3,5-Dicyan-1,2-dihydropyridine neben Analogen 1,4-Dihydroderivaten mittels der UV-Spektroskopie
    1964, Vol. 29, Issue 6, pp. 1495–1498 [Abstract]
  • J. Gut, Jiří Jonáš and J. Piťha
    Nucleic acid components and their analogues. XLIX. Tautomeric structure of 6-azacytosine and its derivatives
    1964, Vol. 29, Issue 6, pp. 1394–1400 [Abstract]
  • J. Beránek and J. Piťha
    Nucleic acid components and their analogues. XLVI. Some derivatives of 6-azacytidine and 6-azauridine
    1964, Vol. 29, Issue 3, pp. 625–634 [Abstract]
  • J. Piťha and J. Žemlička
    Nucleic acids components and their analogues. XLV. The infrared spectra of some 2',3',5'-tri-O-acyl derivatives of nucleosides derived from uridine and 6-azauridine
    1964, Vol. 29, Issue 2, pp. 410–418 [Abstract]
  • J. Kuthan, E. Janečková and M. Havel
    Über Dihydropyridine V. Zur Bildung der Isomeren 1,2- und 1,4-Dihydroderivate bei der Reaktion von Methylmagnesiumjodid mit 3,5-Dicyanpyridin und 3,5-Dicyan-2-methylpyridin
    1964, Vol. 29, Issue 1, pp. 143–151 [Abstract]
  • J. Piťha, J. Joska and J. Fajkoš
    On steroids. LXXXIII. An unusual case of intermolecular hydrogen bonding in a B-norsteroid 3,6-diol
    1963, Vol. 28, Issue 10, pp. 2611–2617 [Abstract]
  • J. Fajkoš, J. Joska, J. Piťha and F. Šorm
    On steroids. LXXX. Intramolecular hydrogen bonding in 3,6-disubstituted 5β-B-norsteroids: Conformation of ring A
    1963, Vol. 28, Issue 9, pp. 2337–2344 [Abstract]
  • J. Kuthan and J. Paleček
    Beitrag zur Mannich-Reaktion von Formaldehyd mit Acetondicarbonsäure-diäthylester
    1963, Vol. 28, Issue 8, pp. 2260–2264 [Abstract]
  • J. Piťha, S. Chládek and J. Smrt
    Intramolecular hydrogen bonds in derivatives of nucleosides
    1963, Vol. 28, Issue 6, pp. 1622–1625 [Abstract]
  • J. Piťha and J. Beránek
    Nucleic acid components and their analogues. XXXII. Infrared spectra of nucleosides with an anomalous heterocyclic base. Tautomerism of 6-azacytidine derivatives
    1963, Vol. 28, Issue 6, pp. 1507–1515 [Abstract]
  • J. Piťha
    Studium über die Tautomerie der Citrazinsäure
    1963, Vol. 28, Issue 6, pp. 1408–1418 [Abstract]
  • J. Kuthan
    Über Dihydropyridine IV. Konstitution und Absorptionsspektren der alkylierten 3,5-Dicyandihydropyridine
    1962, Vol. 27, Issue 9, pp. 2175–2185 [Abstract]
  • R. Lukeš, J. Piťha, J. Kovář and K. Bláha
    Zur Konfiguration stickstoffhaltiger Verbindungen XIV. Über die Solvolyse-Kinetik der Kondensationsprodukte vicinaler Aminohydroxytetraline mit p-Nitrobenzaldehyd
    1962, Vol. 27, Issue 2, pp. 328–336 [Abstract]
  • M. Horák, J. Smolíková and J. Piťha
    Spectroscopic study of the hydrogen bond in substituted 2-nitrophenols
    1961, Vol. 26, Issue 11, pp. 2891–2896 [Abstract]
  • R. Lukeš and J. Kuthan
    Über Dihydropyridine III. Über die Reaktion von Methylmagnesiumjodid mit 3,5-Dicyan-2-methylpyridin und 3,5-Dicyan-2,4,6-trimethylpyridin
    1961, Vol. 26, Issue 7, pp. 1845–1851 [Abstract]
  • R. Lukeš and J. Kuthan
    Über Dihydropyridine II. Beitrag zur Reaktion des Grignardreagenz mit dem Pyridinkern
    1961, Vol. 26, Issue 5, pp. 1422–1428 [Abstract]
  • J. Piťha, J. Plešek and M. Horák
    Kondensationsreaktionen vom Aldoltypus V. Zur Konfiguration von Derivaten des 2,3-Cyclohexano-(1,3,3)-bicyclononan-2-ol-9-ons
    1961, Vol. 26, Issue 4, pp. 1209–1212 [Abstract]
  • J. Piťha, Jiří Jonáš, J. Kovář and K. Bláha
    Zur Konfiguration stickstoffhaltiger Verbindungen XIII. Über die Darstellung und Tautomerie der Aminooxazoline
    1961, Vol. 26, Issue 3, pp. 834–846 [Abstract]
  • J. Piťha, M. Horák, J. Kovář and K. Bláha
    Configuration of nitrogen-containing compounds. XI. The effect of configuration on the infrared spectra of some aminohydroxytetralins
    1960, Vol. 25, Issue 11, pp. 2733–2745 [Abstract]
  • R. Lukeš and J. Kuthan
    Über einige aus den Reaktionsprodukten der Guareschi Reaktion mit Propionaldehyd und Acetaldehyd gewonnene neue Pyridin-Verbindungen
    1960, Vol. 25, Issue 8, pp. 2173–2178 [Abstract]
  • P. Vaculík and J. Kuthan
    Oxydation einiger 4-alkyl-3,5-Dimethylpyridine
    1960, Vol. 25, Issue 6, pp. 1591–1595 [Abstract]
  • J. Piťha and M. Horák
    Spectroscopic study of the intramolecular interaction of an aliphatic hydroxyl group and a benzene nucleus
    1960, Vol. 25, Issue 6, pp. 1586–1590 [Abstract]
  • J. Piťha, S. Heřmánek and J. Vít
    Über die Reduktion der Carbonsäuren und ihrer Derivate mit Natriumaluminiumhydrid
    1960, Vol. 25, Issue 3, pp. 736–742 [Abstract]
  • R. Lukeš, J. Piťha, J. Kovář and K. Bláha
    Zur konfiguration stickstoffhaltiger Verbindungen VIII. Darstellung einiger Stereoisomerer vicinaler Aminotetralole
    1960, Vol. 25, Issue 2, pp. 492–501 [Abstract]
  • J. Piťha and I. Ernest
    Syntheses in the allolupinane series. VI. Catalytic hydrogenation of γ-(2-pyridyl)ketones
    1959, Vol. 24, Issue 8, pp. 2632–2636 [Abstract]
  • P. Vaculík and J. Kuthan
    Über Pyridinhomologe III. Die Synthese der 4-Alkyl-3,5-dimethylpyridine
    1959, Vol. 24, Issue 1, pp. 174–180 [Abstract]
  • I. Ernest and J. Piťha
    4-Substituierte Derivate des Chinolicidins I. Die katalytische Hydrierung der δ-(2-Pyridyl)-α-ketovaleriansäure
    1958, Vol. 23, Issue 1, pp. 125–129 [Abstract]