Collect. Czech. Chem. Commun.
1983, 48, 1430-1434
https://doi.org/10.1135/cccc19831430
Dissociation constants of m- and p-substituted phenylthioureas and ureas in water and in methanol
Jaromír Kaváleka, Vojeslav Štěrbaa and Said El Bahaieb
a Department of Organic Chemistry, Institute of Chemical Technology, 532 10 Pardubice
b Zagazig University, Zagazig, Egypt
Individual author index pages
Other CCCC articles of these authors
- Jiří Hanusek*, Miloš Sedlák, Roman Keder and Vojeslav Štěrba
Kinetics and Mechanism of Desulfurization Reaction of 1-Methyl-2-phenylquinazoline-4(1H)-thiones
2004, Vol. 69, Issue 12, pp. 2212–2222 [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] - 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] - 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] - 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] - Jaroslava Horáčková and Vojeslav Štěrba
Kinetics of Coupling of 4-Methoxybenzenediazonium Ion with 2,6-Dihydroxypyridine
1996, Vol. 61, Issue 6, pp. 951–956 [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] - Vladimír Macháček, Alexandr Čegan, Aleš Halama, Olga Rožňavská and Vojeslav Štěrba
Reactions of 4-Amino-3-penten-2-one and Its NSubstituted Derivatives with Diazonium Ions
1995, Vol. 60, Issue 8, pp. 1367–1379 [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] - Vladimír Macháček, Jana Manová, Miloš Sedlák and Vojeslav Štěrba
Kinetics and Mechanism of Reaction of 2,4-Dinitrobenzaldehyde with Hydroxide Ion
1994, Vol. 59, Issue 10, pp. 2262–2268 [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] - Jaroslava Horáčková and Vojeslav Štěrba
Kinetics of Substitution of 4-Methoxyphenylazo Groups of 2,6-Dioxo-5(3)-(4-methoxyphenylazo)-3(5)-(4-methoxyphenylhydrazono)-1,2,3,6-tetrahydropyridine-4-carboxylic Acid by Reaction with 4-Nitrobenzenediazonium Cation
1994, Vol. 59, Issue 7, pp. 1665–1672 [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] - Jaroslava Horáčková and Vojeslav Štěrba
Coupling Kinetics of Benzenediazonium Ions with 2,6-Dioxo-3-(p-substituted phenylhydrazono)-1,2,3,6-tetrahydropyridine-4-carboxylic Acid
1992, Vol. 57, Issue 9, pp. 1915–1927 [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] - 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] - 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] - 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] - Jiří Klicnar, Jaromír Mindl and Vojeslav Štěrba
Kinetics of reaction of 1,2-diaminobenzene with phenylglyoxal
1990, Vol. 55, Issue 5, pp. 1216–1222 [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] - 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] - 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] - Vladimír Macháček, Alexandr Čegan, Miloš Sedlák and Vojeslav Štěrba
Formation of spiro adduct from N-methyl-N-(2,4,6-trinitrophenyl)glycine anion
1989, Vol. 54, Issue 2, pp. 440–445 [Abstract] - Vladimír Macháček, Miloslav Sebránek and Vojeslav Štěrba
Reaction of N-methyl-N-(2,4-dinitrophenyl)glycine methylamide with methoxide
1989, Vol. 54, Issue 2, pp. 430–439 [Abstract] - Jiří Klicnar, Jaromír Mindl, Ivana Obořilová, Jaroslav Petříček and Vojeslav Štěrba
Reaction kinetics of 1,2-diaminobenzene with ethyl 2-oxopropanoate and 2,3-butanedione
1988, Vol. 53, Issue 12, pp. 3154–3163 [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] - 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] - Vladimír Macháček, Makky M. M. Hassanien and Vojeslav Štěrba
Kinetics and mechanism of spiro adduct formation from and smiles rearrangement of N-methyl-N-(2,4,6-trinitrophenyl)aminoacetanilide. Base-catalyzed transformation of N-(2,4,6-trinitrophenylamino)acetanilide into 2-nitroso-4,6-dinitroaniline
1987, Vol. 52, Issue 9, pp. 2225–2240 [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] - Jaromír Mindl and Vojeslav Štěrba
Mechanism of base-catalyzed cyclization of ethyl N-(substituted aminocarbonyl)glycinates
1987, Vol. 52, Issue 1, pp. 156–161 [Abstract] - Vladimír Macháček, Gabriela Svobodová and Vojeslav Štěrba
Kinetics and mechanism of base-catalyzed cyclization of substituted amides and nitriles of hydantoic acid
1987, Vol. 52, Issue 1, pp. 140–155 [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] - 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] - 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] - 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] - 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] - Vladimír Macháček, Josef Kořínek, Daniela Kreuzigová and Vojeslav Štěrba
Kinetics of reactions of 1,2,4-triazole-3-diazonium ions with phenol and with hydroxyl ion
1985, Vol. 50, Issue 3, pp. 658–674 [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] - Jaromír Mindl, Vojeslav Štěrba, Vladimír Kadeřábek, Jr. and Jiří Klicnar
Kinetics and mechanism of hydrolysis of benzhydryl N-arylthiocarbamates and study of their IR spectra
1984, Vol. 49, Issue 7, pp. 1577–1591 [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] - 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] - Vladimír Macháček, Jaroslav Andrle and Vojeslav Štěrba
Kinetics of reaction of 1-chloro-2,4,6-trinitrobenzene with enolate ions of 2,4-pentanedione and methyl 3-oxobutanoate
1983, Vol. 48, Issue 6, pp. 1608–1617 [Abstract] - Jaromír Mindl and Vojeslav Štěrba
Kinetics and mechanism of hydrolysis of aryl N-methoxycarbamates and their derivatives
1983, Vol. 48, Issue 3, pp. 900–905 [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] - 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] - 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] - Vladimír Macháček, Vojeslav Štěrba and Helena Zahradníčková
Solvolysis kinetics and mechanism of 3-methyl-1,3-thiazolidine-2,4-dione
1981, Vol. 46, Issue 12, pp. 3097–3103 [Abstract] - Jaromír Toman, Vojeslav Štěrba and Jiří Klicnar
Ketimine-enamine tautomerism of 2-ethoxycarbonylmethylene-4-methyl-3-oxo-1,2,3,4-tetrahydroquinoxaline: A kinetic study
1981, Vol. 46, Issue 9, pp. 2104–2109 [Abstract] - Vladimír Macháček, Said El Bahaie and Vojeslav Štěrba
Study of cyclization of 2-acetyl-3-methylamino-N-benzoyl-2-butenethioamide
1981, Vol. 46, Issue 1, pp. 256–261 [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] - 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] - 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] - Vladimír Macháček, Sylvie Marečková and Vojeslav Štěrba
Study of reaction of substituted nitrophenyl acetates and benzoates with nucleophiles
1979, Vol. 44, Issue 6, pp. 1779–1789 [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] - Vladimír Macháček, Said A. El-bahai and Vojeslav Štěrba
Kinetics of cyclization of S-ethoxycarbonylmethylisothiouronium chloride to 2-imino-4-thiazolidone
1979, Vol. 44, Issue 3, pp. 912–917 [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] - 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]