Collection of Czechoslovak Chemical Communications - digital archive 

Individual author index pages

• Erhard Lejdar
• Oldřich Pytela
• Miroslav Večeřa
• Pavel Vetešník

Other CCCC articles of these authors

• Ondřej Prusek*, Filip Bureš and Oldřich Pytela
  ortho-Effect on the acid-catalyzed hydration of 2-substituted α-methylstyrenes
  2009, Vol. 74, Issue 1, pp. 85–99 [Abstract]
• Oldřich Pytela* and Bronislav Trlida
  Kinetics and Mechanism of Acid Catalysed Hydration of α-Methylstyrenes
  2007, Vol. 72, Issue 8, pp. 1025–1036 [Abstract]
• Jan Pícha, Radek Cibulka*, František Liška, Patrik Pařík and Oldřich Pytela
  Reparametrization and/or Determination of Hammett, Inductive, Mesomeric and AISE Substituent Constants for Five Substituents: N⁺(CH₃)₃, CH₂N⁺(CH₃)₃, CH₂Py⁺, CH₂SO₂CH₃ and PO(OCH₃)₂
  2004, Vol. 69, Issue 12, pp. 2239–2252 [Abstract]
• Jan Pícha*, Radek Cibulka, František Hampl, František Liška, Patrik Pařík and Oldřich Pytela
  Reactivity of p-Substituted Benzaldoximes in the Cleavage of p-Nitrophenyl Acetate: Kinetics and Mechanism
  2004, Vol. 69, Issue 2, pp. 397–413 [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]
• 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]
• Oldřich Pytela* and Ondřej Prusek
  Chemometric Analysis of Substituent Effects. XII. Application of Relationship Between 2- and 4-Substitution of Benzene Ring to Study ortho Effect in Selected Compounds with Different Reaction Centres
  1999, Vol. 64, Issue 10, pp. 1617–1628 [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]
• 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]
• Marek Janík, Vladimír Macháček and Oldřich Pytela
  Kinetics of Cyclization of Methyl S-(2,4,6-Trinitrophenyl)mercaptoacetate to 2-Methoxycarbonyl-5,7-dinitrobenzo[d]thiazol-3-oxide
  1997, Vol. 62, Issue 9, pp. 1429–1445 [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]
• Oldřich Pytela
  A New Iterative Method of Construction of the Hammett Acidity Function
  1997, Vol. 62, Issue 4, pp. 645–655 [Abstract]
• Oldřich Pytela
  Chemometric Analysis of Substituent Effects. X. Unification and Reparametrization of Substituent Constants in Hammett-Type Equations by Means of Alternative Interpretation of Substituent Effects (AISE)
  1996, Vol. 61, Issue 8, pp. 1191–1204 [Abstract]
• Oldřich Pytela and Aleš Halama
  Steric Effects in Acid-Catalyzed Decomposition and Base-Catalyzed Cyclization of 1-(2-Alkoxycarbonylphenyl)-3-phenyltriazenes
  1996, Vol. 61, Issue 5, pp. 751–763 [Abstract]
• Oldřich Pytela
  Chemometric Analysis of Substituent Effects. IX. Alternative Interpretation of Substituent Effects (AISE) - Orthogonal Model
  1996, Vol. 61, Issue 5, pp. 704–712 [Abstract]
• Bořivoj Hlaváček, Viera Khünová and Miroslav Večeřa
  Anharmonic Oscillations and T_g, T_m Transitions
  1996, Vol. 61, Issue 1, pp. 44–58 [Abstract]
• Oldřich Pytela
  Chemometric Analysis of Substituent Effects. VIII. Alternative Interpretation of Substituent Effects (AISE)
  1995, Vol. 60, Issue 9, pp. 1502–1528 [Abstract]
• Oldřich Pytela and Aleš Halama
  Chemometric Analysis of Substituent Effects. VII. Inductive Effect as a Basic Substituent Effect. Isoeffect Substituent Constant
  1995, Vol. 60, Issue 8, pp. 1316–1332 [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 and Taťjana Nevěčná
  Kinetics and Mechanism of Decomposition of 1,3-Bis(4-methylphenyl)triazene Catalyzed with Substituted Benzoic Acids in 25% Aqueous Methanol-General or Specific Catalysis?
  1994, Vol. 59, Issue 9, pp. 2029–2041 [Abstract]
• Oldřich Pytela and Josef Liška
  Chemometrical Analysis of Substituent Effects. V. ortho Effect
  1994, Vol. 59, Issue 9, pp. 2005–2021 [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]
• Taťjana Nevěčná, Vojtěch Bekárek and Oldřich Pytela
  A Study of Effects of Temperature and Medium on Reaction of Triethylamine with Ethyl Bromide
  1994, Vol. 59, Issue 6, pp. 1384–1391 [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, Pavla Valášková and Oldřich Pytela
  Kinetics and Mechanism of Acid Catalyzed Decomposition of 1-Phenyl-3,3-dialkyltriazenes
  1994, Vol. 59, Issue 2, pp. 401–411 [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]
• Oldřich Pytela
  Chemometric Analysis of Substituent Effects. II. Relation Between Hammett Substituent Constants σ_m and σ_p and a New Model for Quantitative Description of Substituent Effects
  1994, Vol. 59, Issue 2, pp. 381–390 [Abstract]
• Oldřich Pytela
  Chemometric Analysis of Substituent Effects. I. Substituent Effects on the Dissociation of Monosubstituted Benzoic Acids
  1994, Vol. 59, Issue 1, pp. 159–174 [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]
• Oldřich Pytela and Zdeněk Bahník
  Synthesis, kinetics and mechanism of cyclization of 1-(2-aryloxycarbonylphenyl)-3-phenyltriazenes
  1990, Vol. 55, Issue 11, pp. 2692–2700 [Abstract]
• Oldřich Pytela, Jaroslava Hálová and Miroslav Ludwig
  Interpretation of chromatographic characteristics of mobile phase in liquid chromatography by means of solvent parameters
  1990, Vol. 55, Issue 11, pp. 2629–2635 [Abstract]
• Oldřich Pytela and Vladimír Dlouhý
  Synthesis and cyclization kinetics and mechanism of 1-(2-ethoxycarbonylphenyl)-3-aryltriazenes. Kinetic acidity function of sodium methoxide in methanol
  1990, Vol. 55, Issue 10, pp. 2468–2474 [Abstract]
• Oldřich Pytela
  A new classification of solvents based on chemometric empirical scale of parameters
  1990, Vol. 55, Issue 3, pp. 644–652 [Abstract]
• Oldřich Pytela
  Additive-multiplicative description of extrathermodynamic relations: Application to solvent effect
  1990, Vol. 55, Issue 3, pp. 634–643 [Abstract]
• Oldřich Pytela, Taťjana Nevěčná and Miroslav Ludwig
  Solvent effects on kinetics and mechanism of acid-catalyzed decomposition of 1,3-bis(4-methylphenyl)-triazene II. Reactions in aprotic solvents
  1990, Vol. 55, Issue 1, pp. 156–164 [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]
• Oldřich Pytela
  Determination of number of linear latent variables in a set of experimental chemical data
  1990, Vol. 55, Issue 1, pp. 42–54 [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]
• Oldřich Pytela, Josef Jirman and Antonín Lyčka
  Chemometrical analysis of substituent effects on ¹³C and ¹⁵N NMR chemical shifts in 1-aroyl-3-substituted thioureas
  1989, Vol. 54, Issue 9, pp. 2399–2407 [Abstract]
• Oldřich Pytela
  New statistical parameters for description of solvent effect
  1989, Vol. 54, Issue 1, pp. 136–150 [Abstract]
• Oldřich Pytela and Vítězslav Zima
  Nucleophilicity and its parametrization
  1989, Vol. 54, Issue 1, pp. 117–135 [Abstract]
• Oldřich Pytela
  Empirical approach to description of solvent effect on processes in solutions: A review
  1988, Vol. 53, Issue 7, pp. 1333–1423 [Abstract]
• Vítězslav Zima, Oldřich Pytela and Miroslav Večeřa
  A study of nucleophilicity in selected systems
  1988, Vol. 53, Issue 4, pp. 814–821 [Abstract]
• Oldřich Pytela and Miroslav Ludwig
  A description of effect of composition of mixed binary solvents on processes in solutions
  1988, Vol. 53, Issue 4, pp. 671–685 [Abstract]
• Miroslav Ludwig, Oldřich Pytela, Helena Javůrková and Miroslav Večeřa
  Analysis of substituent and solvent effects on dissociation of N-phenylbenzenesulphonamides
  1987, Vol. 52, Issue 12, pp. 2900–2908 [Abstract]
• Oldřich Pytela, Petr Svoboda and Miroslav Večeřa
  A mathematical modelling of acid catalyzed decomposition of 3-methyl-1,3-diphenyltriazene
  1987, Vol. 52, Issue 10, pp. 2492–2499 [Abstract]
• Petr Svoboda, Oldřich Pytela and Miroslav Večeřa
  Kinetics and mechanism of acid catalyzed decomposition of substituted 1,3-diphenyltriazenes
  1987, Vol. 52, Issue 9, pp. 2217–2224 [Abstract]
• Oldřich Pytela, Martin Kaska, Miroslav Ludwig and Miroslav Večeřa
  Solvolysis kinetics and mechanism of substituted 3-acetyl-1,3-diphenyltriazenes in acid medium; Kinetic acidity function
  1987, Vol. 52, Issue 9, pp. 2212–2216 [Abstract]
• Oldřich Pytela, Miroslav Ludwig and Miroslav Večeřa
  The Hammett substituent constants and effects of medium
  1986, Vol. 51, Issue 10, pp. 2143–2150 [Abstract]
• Miroslav Ludwig, Václav Baron, Karel Kalfus, Oldřich Pytela and Miroslav Večeřa
  Dissociation constants of substituted benzoic acids in water and in organic solvents
  1986, Vol. 51, Issue 10, pp. 2135–2142 [Abstract]
• Miroslav Ludwig, Oldřich Pytela and Miroslav Večeřa
  Solvent effects on dissociation of substituted benzenesulphonamides in acetone, 1,2-dichloroethane, tetramethylene sulphone, pyridine and some aqueous organic solvent mixtures
  1986, Vol. 51, Issue 9, pp. 1948–1957 [Abstract]
• Oldřich Pytela, Stanislava Štumrová, Miroslav Ludwig and Miroslav Večeřa
  Kinetic acidity function and solvolysis of 3-hydroxy-1,3-diphenyltriazenes
  1986, Vol. 51, Issue 3, pp. 564–572 [Abstract]
• Petr Svoboda, Oldřich Pytela and Miroslav Večeřa
  Kinetics of acid catalyzed decomposition of substituted 1,3-diphenyl-3-methyltriazenes
  1986, Vol. 51, Issue 3, pp. 553–563 [Abstract]
• Oldřich Pytela, Václav Vala, Miroslav Ludwig and Miroslav Večeřa
  Modeling of hydrolysis mechanism of 3-hydroxytriazenes in strongly acidic medium
  1986, Vol. 51, Issue 2, pp. 347–357 [Abstract]
• Jiří Knížek, Erhard Lejdar and Pavel Vetešník
  Mechanism of acetoacetylation of substituted anilines
  1985, Vol. 50, Issue 2, pp. 365–374 [Abstract]
• Marián Antalík, Ernest Šturdík, Oldřich Pytela, Ľudovít Drobnica and Pavol Sulo
  Kinetic analysis of reactions of phenylhydrazonopropanedinitriles with thiols
  1984, Vol. 49, Issue 12, pp. 2807–2815 [Abstract]
• Miroslav Ludwig, Oldřich Pytela and Miroslav Večeřa
  Solvent effect in dissociation of substituted benzenesulphonamides in dimethylformamide, dimethyl sulphoxide, and acetonitrile
  1984, Vol. 49, Issue 11, pp. 2593–2601 [Abstract]
• Alexandr Čegan and Miroslav Večeřa
  Substituent effects on hydrolytic stability and herbicidal activity of 3-arylimidazolidine-2,4-diones
  1984, Vol. 49, Issue 6, pp. 1521–1528 [Abstract]
• Miroslav Ludwig, Oldřich Pytela, Karel Kalfus and Miroslav Večeřa
  Dissociation of substituted benzenesulphonamides in water, methanol and ethanol
  1984, Vol. 49, Issue 5, pp. 1182–1192 [Abstract]
• Oldřich Pytela, Miroslav Pilný and Miroslav Večeřa
  Substituent effect on solvolysis of 3-acetyl-1,3-diphenyltriazenes
  1984, Vol. 49, Issue 5, pp. 1173–1181 [Abstract]
• Antonín Lyčka and Pavel Vetešník
  ¹³C and ¹⁵N NMR spectra of 1-(3- or 4-substituted phenyl)-3-methyl-3-phenyltriazenes
  1984, Vol. 49, Issue 4, pp. 963–969 [Abstract]
• Petr Svoboda, Oldřich Pytela and Miroslav Večeřa
  Solvent effect - Classification of parameters describing influence of solvents
  1983, Vol. 48, Issue 11, pp. 3287–3306 [Abstract]
• Oldřich Pytela and Pavel Vetešník
  Dissociation constants of monosubstituted diphenylamines and an optimized construction of acidity function
  1983, Vol. 48, Issue 8, pp. 2368–2375 [Abstract]
• Alexandr Čegan and Miroslav Večeřa
  Hydrolytic stability and pesticidal activity of N'-methyl- and N'-arylcarbamates of 3-(N,N-diethylamino)phenol
  1983, Vol. 48, Issue 5, pp. 1440–1446 [Abstract]
• Iva Sroková, Pavel Vetešník, Adolf Jurášek and Jaroslav Kováč
  Tautomerism of 5-nitro-2-furylnitromethane
  1981, Vol. 46, Issue 12, pp. 3122–3127 [Abstract]
• Miroslav Ludwig, Oldřich Pytela and Miroslav Večeřa
  Salt effect in hydrolysis of 3-acyl-1,3-diphenyltriazenes
  1981, Vol. 46, Issue 12, pp. 3104–3109 [Abstract]
• Oldřich Pytela, Petr Svoboda and Miroslav Večeřa
  Solvent effect as a criterion of solvolysis mechanism. Solvolysis of 3-acyl-1,3-diphenyltriazenes
  1981, Vol. 46, Issue 9, pp. 2091–2103 [Abstract]
• Jaromír Mindl, Jiří Sulzer and Miroslav Večeřa
  Hydrolysis kinetics and mechanism of diaryldithiocarbamates in 20% aqueous dioxane
  1981, Vol. 46, Issue 8, pp. 1970–1975 [Abstract]
• Oldřich Pytela, Miroslav Večeřa and Pavel Vetešník
  Calculation of isokinetic temperature of non-catalyzed hydrolysis of substituted 3-(N-methylcarbamoyl)-1,3-diphenyltriazenes
  1981, Vol. 46, Issue 4, pp. 898–905 [Abstract]
• Jaromír Mindl, Pavel Balcárek, Lubomír Šilar and Miroslav Večeřa
  Hydrolysis kinetics and mechanism of diarylthiocarbamates in 20% aqueous dioxane medium
  1980, Vol. 45, Issue 11, pp. 3130–3139 [Abstract]
• Oldřich Pytela, Miroslav Večeřa and Pavel Vetešník
  Substituent effects in hydrolysis of 3-carbamoyl-1,3-diphenyltriazenes
  1980, Vol. 45, Issue 7, pp. 2108–2119 [Abstract]
• Blanka Plandorová, Oldřich Pytela, Miroslav Večeřa and Pavel Vetešník
  Reactions of substituted 1,3-diphenyltriazenes with phenyl isocyanates. Catalysis and substituent effects
  1980, Vol. 45, Issue 4, pp. 1279–1289 [Abstract]
• Oldřich Pytela, Miroslav Večeřa and Pavel Vetešník
  Hydrolysis kinetics and mechanism of acyl-1,3-diphenyltriazenes
  1980, Vol. 45, Issue 4, pp. 1269–1278 [Abstract]
• Alexandr Čegan, Jaroslav Šlosar and Miroslav Večeřa
  Hydrolysis kinetics and mechanism of N'-(3-N-methylcarbamoyloxyphenyl)-N,N-dimethylformamidine
  1980, Vol. 45, Issue 4, pp. 1065–1071 [Abstract]
• Jitka Moravcová and Miroslav Večeřa
  Kinetics and mechanism of hydrolysis of substituted phenyl N-(4-methylphenyl)sulphonylcarbamates. Solvolysis of 3-nitrophenyl N-(4-methylphenyl)-sulphonylcarbamate in mixtures water-1,4-dioxane and water-tert-butyl alcohol and its decomposition to neutral molecules in non-aqueous media
  1979, Vol. 44, Issue 9, pp. 2639–2652 [Abstract]
• Jaromír Mindl, František Radonský, Jiří Klicnar and Miroslav Večeřa
  Kinetics and mechanism of alkaline hydrolysis of (Z)-O-(N-4-nitrophenylcarbamoyl)benzaldoximes in 30% aqueous ethanol
  1979, Vol. 44, Issue 8, pp. 2401–2408 [Abstract]
• Jiří Štohandl and Miroslav Večeřa
  Study of solvolysis mechanism of some ureas derived from 2-benzoxazolone
  1979, Vol. 44, Issue 6, pp. 1790–1798 [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]
• Alexander Čegan, Jaroslav Šlosar and Miroslav Večeřa
  Hydrolysis kinetics and mechanism of N'-aryl-N,N-dimethylformamidines in alkaline medium
  1978, Vol. 43, Issue 1, pp. 134–141 [Abstract]