Collect. Czech. Chem. Commun.
1989, 54, 2399-2407
https://doi.org/10.1135/cccc19892399
Chemometrical analysis of substituent effects on 13C and 15N NMR chemical shifts in 1-aroyl-3-substituted thioureas
Oldřich Pytelaa, Josef Jirmanb and Antonín Lyčkab
a Department of Organic Chemistry, Institute of Chemical Technology, 532 10 Pardubice
b Research Institute of Organic Syntheses, 532 18 Pardubice-Rybitví
Individual author index pages
Other CCCC articles of these authors
- Jaroslava Kořínková*, Antonín Lyčka, Aleš Cee, Milan Nádvorník, Robert Jirásko and Radim Hrdina
Structure of 2:1 cobalt(III) complexes derived from arylazocitrazinic acid
2009, Vol. 74, Issue 4, pp. 535–544 [Abstract] - 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] - Štěpán Frebort, Numan Almonasy*, Radim Hrdina, Antonín Lyčka, Miroslav Lísa and Michal Holčapek
Synthesis and Characterization of Dialkyl Esters of 1,2,4,5-Tetrazine-3,6-dicarboxylic Acid
2008, Vol. 73, Issue 1, pp. 107–115 [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] - Alexander Popkov*, Ivana Císařová, Jana Sopková, Josef Jirman, Antonín Lyčka and Konstantin A. Kochetkov*
Asymmetric Synthesis of (S)-2-Amino-3-(1-naphthyl)propanoic Acid via Chiral Nickel Complex. Crystal Structure, Circular Dichroism, 1H and 13C NMR Spectra of the Complex
2005, Vol. 70, Issue 9, pp. 1397–1410 [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] - Jaroslav Holeček*, Antonín Lyčka, David Micák, László Nagy, György Vankó, Jiří Brus, S. Shanmuga Sundara Raj, Hoong Kun Fun and Seik Weng ng
Infrared, 119Sn, 13C and 1H NMR, 119Sn and 13C CP/MAS NMR and Mössbauer Spectral Study of Some Tributylstannyl Citrates and Propane-1,2,3-tricarboxylates
1999, Vol. 64, Issue 6, pp. 1028–1048 [Abstract] - Antonín Lyčka, Josef Jirman and Alois Koloničný
15N, 13C, and 1H NMR Spectra of Azo and Hydrazo Compounds Derived from 1,3,3-Trimethyl-2-methylidene-2,3-dihydroindole (Fischer Base)
1998, Vol. 63, Issue 7, pp. 1012–1020 [Abstract] - Alexander Popkov, Josef Jirman, Milan Nádvorník and Petr A. Manorik
NMR Study of the Structures of Ni(II) Complexes of Schiff Bases of 2-Bromoglycine with (S)-2-[(N-Benzylprolyl)amino]benzophenone or (S)-2-[(N-Benzylprolyl)amino]-5-chlorobenzophenone
1998, Vol. 63, Issue 7, pp. 990–994 [Abstract] - Aleš Růžička, Vladimír Pejchal, Jaroslav Holeček, Antonín Lyčka and Klaus Jacob
119Sn, 15N, 13C, and 1H NMR Study of the Intramolecular Sn-N Donor-Acceptor Interaction in [2-(Dimethylaminomethyl)phenyl]stannanes
1998, Vol. 63, Issue 7, pp. 977–989 [Abstract] - Ljerka Tušek-Božic, Manda Curic, Dražen Vikic-Topic and Antonín Lyčka
Multinuclear NMR Studies of Palladium(II) Dihalide Complexes of Dibutyl {α-[4-(Phenyldiazenyl)anilino]benzyl}phosphonate
1997, Vol. 62, Issue 12, pp. 1888–1904 [Abstract] - Alžbeta Krutošíková, Slavomír Mastik, Miloslava Dandárová and Antonín Lyčka
Synthesis and Reactions of 8-Hydrazinofuro[2',3':4,5]pyrrolo-[1,2-d][1,2,4]triazines
1997, Vol. 62, Issue 10, pp. 1612–1622 [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] - Antonín Lyčka, Jaroslav Holeček and David Micák
119Sn, 13C and 1H NMR Spectra of Tris(1-butyl)stannyl D-Glucuronate
1997, Vol. 62, Issue 8, pp. 1169–1176 [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] - Jaroslav Holeček, Milan Nádvorník, Karel Handlíř, Vladimír Pejchal, Radovan Vítek and Antonín Lyčka
Synthesis and Infrared and 1H, 13C, 119Sn NMR Spectra of Some Tris- and Bis(1-butyl)tin(IV) Naphthoates and Hydroxynaphthoates
1997, Vol. 62, Issue 2, pp. 279–298 [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] - Jiří Hartl, Martin Doležal, Jana Krinková, Antonín Lyčka and Želmíra Odlerová
Synthesis and Antituberculotic Activity of 5-Alkyl-6-chloro-2-pyrazinecarboxamides and Corresponding Thioamides
1996, Vol. 61, Issue 7, pp. 1109–1114 [Abstract] - Martin Doležal, Jiří Hartl, Antonín Lyčka, Vladimír Buchta and Želmíra Odlerová
Synthesis and Antituberculotic Properties of Some Substituted Pyrazinecarbothioamides
1996, Vol. 61, Issue 7, pp. 1102–1108 [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] - Antonín Lyčka
1H, 13C and 15N NMR Spectra of Coupling Products of Benzenediazonium Salts with Aliphatic Nitro Compounds and Study of Their E/Z Isomerism
1996, Vol. 61, Issue 4, pp. 589–596 [Abstract] - Oldřich Pytela
Chemometric Analysis of Substituent Effects. VIII. Alternative Interpretation of Substituent Effects (AISE)
1995, Vol. 60, Issue 9, pp. 1502–1528 [Abstract] - Vladimír Pejchal, Jaroslav Holeček, Milan Nádvorník and Antonín Lyčka
13C and 119Sn NMR Spectra of Some Mono-n-butyltin(IV) Compounds
1995, Vol. 60, Issue 9, pp. 1492–1501 [Abstract] - Pavel Hradil and Josef Jirman
Synthesis of 2-Aryl-3-hydroxyquinolin-4(1H)-ones
1995, Vol. 60, Issue 8, pp. 1357–1366 [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] - Martin Doležal, Jiří Hartl, Antonín Lyčka, Vladimír Buchta and Želmíra Odlerová
Synthesis and Antituberculotic Activity of Some Substituted 3-Arylamino-5-cyano-2-pyrazinecarboxamides
1995, Vol. 60, Issue 7, pp. 1236–1241 [Abstract] - Josef Jirman and Alexander Popkov
1H, 13C, and 15N NMR Spectra of Ni(II) Complexes of Schiff Bases of (S)-2-(N-Benzylprolyl)aminobenzophenone and α-Monosubstituted Glycine and Determination of Configuration of the Complexes by 2D NOESY Spectra
1995, Vol. 60, Issue 6, pp. 990–998 [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] - Jaromír Toman, Jaromír Mindl, Antonín Lyčka, Jiří Klicnar, Ivana Srovnalová and Miloš Koníček
Structure of Reaction Products of Some Substituted Quinoxaline N-Oxides with Carbanions
1994, Vol. 59, Issue 11, pp. 2493–2500 [Abstract] - Josef Jirman* and Alexander Popkov
1H, 13C and 15N NMR Spectra of Ni(II) Complex of Schiff Base from (S)-2-(N-Benzylprolyl)amino-5-methylbenzophenone and Glycine
1994, Vol. 59, Issue 9, pp. 2103–2108 [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] - Karel Handlíř, Antonín Lyčka, Jaroslav Holeček, Milan Nádvorník, Vladimír Pejchal and Angelika Sebald
119Sn and 13C NMR Spectral Study of Some Vinyltin(IV) Compounds Involving the Sn-S Bond
1994, Vol. 59, Issue 4, pp. 885–897 [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 σm and σp 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] - Josef Jirman
1H and 13C NMR Spectra of Technically Important Sodium 1- and 2-Aminonaphthalenesulfonates
1993, Vol. 58, Issue 6, pp. 1378–1387 [Abstract] - Josef Jirman and Pavel Pech
17O NMR Spectra of Acylated Ureas and Thioureas
1992, Vol. 57, Issue 6, pp. 1278–1281 [Abstract] - Miloslav Hejsek, Jan Slouka, Vojtěch Bekárek and Antonín Lyčka
Cyclization Reactions of 2-(6-Azauracil-5-yl)benzoic Acid and Some Its Derivatives
1992, Vol. 57, Issue 1, pp. 123–133 [Abstract] - Josef Jirman
1H and 13C NMR spectra of 2,2’-disubstitutedtrans-azobenzenes suitable for preparation of metallized azo dyes
1991, Vol. 56, Issue 10, pp. 2160–2168 [Abstract] - Jaroslav Holeček, Antonín Lyčka, Milan Nádvorník and Karel Handlíř
IR and 13C, 17O, and 119Sn NMR spectra of some bis(1-butyl)tin(IV) carboxylates of dicarboxylic acids
1991, Vol. 56, Issue 9, pp. 1908–1915 [Abstract] - Antonín Lyčka and Karel Palát, Jr.
A 15N, 13C, and 1H NMR study of reaction products from arylguanidines and chloroformate esters
1991, Vol. 56, Issue 7, pp. 1505–1511 [Abstract] - Jiří Čermák, Miloslav Sebránek, Zora Nývltová and Josef Jirman
Application of capillary GC-MS to analyses of wastes from chemical plants. Identification of N-arylphthalimides in naphthalenic pitches
1991, Vol. 56, Issue 4, pp. 809–821 [Abstract] - Jiří Gasparič, Tomáš Vontor, Antonín Lyčka and Dobroslav Šnobl
Formation of acetals and cleavage of the five-membered ring in the bromination of isatin in alcohols
1990, Vol. 55, Issue 12, pp. 2963–2966 [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] - Karel Dlabal, Karel Palát, Antonín Lyčka and Želmíra Odlerová
Synthesis and 1H and 13C NMR spectra of sulfur derivatives of pyrazine derived from amidation product of 2-chloropyrazine and 6-chloro-2-pyrazinecarbonitrile. Tuberculostatic activity
1990, Vol. 55, Issue 10, pp. 2493–2501 [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] - Jaroslav Holeček, Antonín Lyčka, Karel Handlíř and Milan Nádvorník
13C and 119Sn NMR spectra of diphenyl- and dibenzyltin(IV) compounds and their complexes
1990, Vol. 55, Issue 5, pp. 1193–1207 [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] - Josef Jirman and Antonín Lyčka
33S NMR spectra of some sulfonated naphthalenes, naphthols, and their anions
1990, Vol. 55, Issue 2, pp. 446–451 [Abstract] - Antonín Lyčka, Miroslav Nečas, Josef Jirman, Jaroslav Straka and Bohdan Schneider
NMR studies of 1-phenylazo-3-substituted-2-naphthols in solution and in the solid state
1990, Vol. 55, Issue 1, pp. 193–201 [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] - Josef Jirman, Antonín Lyčka and Miroslav Ludwig
13C and 15N NMR spectra of oximes prepared by nitrosation of activated methylene group
1990, Vol. 55, Issue 1, pp. 136–146 [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] - Antonín Lyčka, Jaroslav Holeček and Karel Handlíř
119Sn, 13C and 1H NMR studies of aryloxy- and arylthio(1-butyl)stannanes
1989, Vol. 54, Issue 9, pp. 2386–2398 [Abstract] - Tomáš Vontor, Karel Palát and Antonín Lyčka
Homolytic carbamoylation and alkoxycarbonylation of 2-aminopyrazine
1989, Vol. 54, Issue 5, pp. 1306–1310 [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] - Karel Komers, Antonín Lyčka, Josef Jirman and Ivan Kolb
An intermediate of reaction of 2-naphthol with activated sludge
1988, Vol. 53, Issue 7, pp. 1574–1578 [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] - Vladimír Macháček, Vojeslav Štěrba, Ivan Kolb and Antonín Lyčka
Reactions of methyl esters of N-(2,4-dinitrophenyl)glycine and N-methyl-N-(2,4-dinitrophenyl)glycine with sodium methoxide
1988, Vol. 53, Issue 5, pp. 1044–1052 [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] - 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] - 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] - Antonín Lyčka, Josef Jirman and Jaroslav Holeček
17O and 13C NMR spectra of some geminal diacetates
1988, Vol. 53, Issue 3, pp. 588–592 [Abstract] - Jaroslav Holeček, Antonín Lyčka, Karel Handlíř and Milan Nádvorník
13C and 119Sn NMR evidence of the presence and extent of σ-π conjugation in some benzyltin compounds and their complexes
1988, Vol. 53, Issue 3, pp. 571–580 [Abstract] - Miloš Titz, Miloš Nepraš, Miroslav Nečas, Radim Hrdina, Stanislav Luňák, Jr. and Antonín Lyčka
Study of the azo-hydrazone tautomeric equilibrium by electronic spectroscopy and quantum chemistry. II. HMO calculations
1988, Vol. 53, Issue 2, pp. 227–242 [Abstract] - Miloš Nepraš, Miloš Titz, Miroslav Nečas, Stanislav Luňák, Jr., Radim Hrdina and Antonín Lyčka
Study of the azo-hydrazone tautomeric equilibrium by electronic spectroscopy and quantum chemistry. I. Electronic spectra
1988, Vol. 53, Issue 2, pp. 213–226 [Abstract] - Antonín Lyčka, Vladimír Macháček and Josef Jirman
15N, 13C, and 1H NMR spectra of 1-substituted-2,4,6-trinitrobenzenes
1987, Vol. 52, Issue 12, pp. 2946–2952 [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] - Josef Jirman and Antonín Lyčka
15N, 13C, and 1H NMR spectra of acylated ureas and thioureas
1987, Vol. 52, Issue 10, pp. 2474–2481 [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] - 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] - Antonín Lyčka, Libuše Havlíčková, Alois Koloničný and Josef Jirman
15N NMR study of amino-imino tautomerism in derivatives of 1,4-bis(substituted amino)-9,10-anthraquinones and 1,4-bis(substituted amino)-2,3-dihydro-9,10-anthraquinones
1987, Vol. 52, Issue 3, pp. 736–741 [Abstract] - Antonín Lyčka, Tibor Liptaj and Josef Jirman
13C and 15N NMR spectra of 3-methyl-1-phenylpyrazole-4,5-dione 4-(4'-substituted phenyl)hydrazones
1987, Vol. 52, Issue 3, pp. 727–735 [Abstract] - Vladimír Macháček, Vojeslav Štěrba and Antonín Lyčka
Mechanism of the reaction of 1-methoxy- and 1-chloro-2,4,6-trinitrobenzene with dimethyl malonate anion
1987, Vol. 52, Issue 1, pp. 132–139 [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] - Antonín Lyčka, Jaroslav Holeček, Karel Handlíř, Josef Pola and Václav Chvalovský
17O, 13C, and 29Si NMR spectra of some acyloxy- and diacetoxysilanes and acetoxygermanes
1986, Vol. 51, Issue 11, pp. 2582–2589 [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] - Jaroslav Holeček, Antonín Lyčka and Roland Wagener
The 119Sn and 15N NMR spectral study of the chelate formation in the triphenyltin(IV) oxinate
1986, Vol. 51, Issue 10, pp. 2116–2126 [Abstract] - Vladimír Macháček, Makky M. M. Hassanien, Vojeslav Štěrba and Antonín Lyčka
Formation of the Meisenheimer spiro adduct of N-(2,4,6-trinitrophenyl)alanine methylamide and its rearrangement to 2-amino-N-methyl-N-(2,4,6-trinitrophenyl)propanamide
1986, Vol. 51, Issue 9, pp. 1972–1985 [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] - Jaroslav Holeček, Karel Handlíř, Antonín Lyčka, T. K. Chattopadhyay, B. Majee and A. K. Kumar
Preparation and infrared and 13C, 17O, and 119Sn NMR spectra of some substituted di- and tri(1-butyl)tin phenoxyacetates and phenylthioacetates
1986, Vol. 51, Issue 5, pp. 1100–1111 [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] - Vladimír Macháček, Antonín Lyčka and Milan Nádvorník
A study of reaction of aromatic polynitro compounds with tributylstannyl hydride
1985, Vol. 50, Issue 11, pp. 2598–2606 [Abstract] - Dobroslav Šnobl, Antonín Lyčka and Jaroslav Horyna
13C NMR spectra of sodium naphthalenesulphonates
1985, Vol. 50, Issue 8, pp. 1852–1861 [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] - Antonín Lyčka, Milan Nádvorník, Karel Handlíř and Jaroslav Holeček
13C and 119Sn NMR spectra of some triphenyltin 4-substituted benzoates dissolved in coordinating and non-coordinating solvents
1984, Vol. 49, Issue 12, pp. 2903–2911 [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] - Antonín Lyčka
13C, 15N, and 19F NMR spectra of 2-phenylhydrazonopropanedinitriles and methyl 2-phenyl hydrazonocyanoacetates
1984, Vol. 49, Issue 12, pp. 2801–2806 [Abstract] - Jan Slouka, Vojtěch Bekárek, Karel Nálepa and Antonín Lyčka
Synthesis of 1,2,4-triazino[5,6-b]- and imidazo[4,5-b]quinoline derivatives
1984, Vol. 49, Issue 11, pp. 2628–2634 [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] - Karel Handlíř, Jaroslav Holeček, Milan Nádvorník, Antonín Lyčka and Milan Hucl
Study of structure of bis(triphenylstannyl) chromate(VI) by infrared, Mössbauer, and 1H, 13C and 119Sn NMR spectra
1984, Vol. 49, Issue 6, pp. 1497–1504 [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] - Vladimír Macháček and Antonín Lyčka
13C and 15N NMR spectra of 6-substituted bicyclo[3,3,1]7-nonanone nitronates
1984, Vol. 49, Issue 1, pp. 244–252 [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] - 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] - Antonín Lyčka
13C and 15N NMR study of azo-hydrazone tautomerism in azo dyes containing amino or acetamido groups
1983, Vol. 48, Issue 11, pp. 3104–3111 [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] - Jan Slouka, Vojtěch Bekárek and Antonín Lyčka
Cyclization reactions of some o-acylphenylhydrazones
1982, Vol. 47, Issue 6, pp. 1746–1756 [Abstract] - Bohumír Koutek, Milena Píšová, Josef Krupička, Antonín Lyčka, Dobroslav Šnobl and Milan Souček
Benzoannelated quinone methides
1982, Vol. 47, Issue 6, pp. 1645–1653 [Abstract] - Antonín Lyčka
Carbon-13 and nitrogen-15 NMR spectra of cis- and trans-azobenzene, 4-monosubstituted and 4,4'-disubstituted trans-azobenzenes
1982, Vol. 47, Issue 4, pp. 1112–1120 [Abstract] - Antonín Lyčka, Dobroslav Šnobl, Karel Handlíř, Jaroslav Holeček and Milan Nádvorník
29Si and 13C NMR spectra of some alkyldiphenylchlorosilanes, alkyldiphenylsilanoles and bis(alkyldiphenylsilyl)chromates
1982, Vol. 47, Issue 2, pp. 603–612 [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] - Bohumír Koutek, Lubomír Musil, Jiří Velek, Antonín Lyčka, Dobroslav Šnobl, Miroslava Synáčková and Milan Souček
Perturbation of the fuchsone chromophore by 3,5-methyl substitution. Sterically crowded exocyclic double bond
1981, Vol. 46, Issue 10, pp. 2540–2556 [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] - Antonín Lyčka, Dobroslav Šnobl, Bohumír Koutek, Libuše Pavlíčková and Milan Souček
13C NMR study of 7,7-disubstituted quinone methides
1981, Vol. 46, Issue 9, pp. 2083–2090 [Abstract] - Antonín Lyčka, Dobroslav Šnobl, Bohumír Koutek, Libuše Pavlíčková and Milan Souček
13C NMR study of substituted quinone methides. 2- and 2,6-substituted fuchsones
1981, Vol. 46, Issue 8, pp. 1775–1787 [Abstract] - Antonín Lyčka, Dobroslav Šnobl, Karel Handlíř, Jaroslav Holeček and Milan Nádvorník
13C, 29Si, 115Sn, 117Sn and 119Sn NMR spectra of some triphenyl derivatives of elements of IVB group
1981, Vol. 46, Issue 6, pp. 1383–1388 [Abstract] - Erhard Lejdar, Oldřich Pytela, Miroslav Večeřa and Pavel Vetešník
Reaction of 1,3-diphenyltriazene with phenyl isocyanate. Solvent effect, activation parameters and kinetic isotopic effect
1981, Vol. 46, Issue 6, pp. 1376–1382 [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] - Antonín Lyčka and Dobroslav Šnobl
Coupling constants nitrogen-15-nitrogen-15 and nitrogen-15-hydrogen in phenylhydrazones forming hydrogen bond
1981, Vol. 46, Issue 4, pp. 892–897 [Abstract] - Antonín Lyčka
13C and 15N NMR studies of 2,3,4-pentanetrione 3-phenylhydrazone, dimethyl 2-phenylhydrazonopropanedioate and ethyl 2-phenylhydrazono-3-oxobutanoate
1980, Vol. 45, Issue 12, pp. 3354–3359 [Abstract] - Antonín Lyčka
Carbon-13 and nitrogen-14 NMR spectra of 1-(substituted phenyl)pyridinium salts
1980, Vol. 45, Issue 10, pp. 2766–2771 [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] - Jaroslav Horyna, Antonín Lyčka and Dobroslav Šnobl
13C-NMR spectra of benzenesulphonyl derivatives
1980, Vol. 45, Issue 5, pp. 1575–1580 [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] - Antonín Lyčka and Dobroslav Šnobl
Effect of lanthanide shift reagents on 1H NMR spectra of aminopyridines
1979, Vol. 44, Issue 3, pp. 908–911 [Abstract]
