Collect. Czech. Chem. Commun. 1977, 42, 718-725
https://doi.org/10.1135/cccc19770718

Reaction of urea with ethyl acetoacetate

J. Kaválek, F. Krampera and V. Štěrba

Individual author index pages


Other CCCC articles of these authors

  • J. Kaválek, V. Macháček, M. Pastrnek and V. Štěrba
    Kinetics and mechanism of formation of Meisenheimer complexes from methyl malonate and 2,4,6-trinitroanisole
    1977, Vol. 42, Issue 10, pp. 2928–2937 [Abstract]
  • V. Macháček, V. Štěrba and A. Štěrbová
    Kinetics and mechanism of reaction of 1,3,5-trinitrobenzene with 1-naphthol
    1976, Vol. 41, Issue 9, pp. 2556–2565 [Abstract]
  • J. Kaválek, A. Lyčka, V. Macháček and V. Štěrba
    Reactions of 1-arylpyridinium ions with anions of methyl acetoacetate, cyanoacetate and malonate
    1976, Vol. 41, Issue 7, pp. 1926–1934 [Abstract]
  • I. Kolb, V. Macháček and V. Štěrba
    Kinetics and mechanism of reaction of 1,3,5-trinitrobenzene with carbanions
    1976, Vol. 41, Issue 7, pp. 1914–1925 [Abstract]
  • J. Kaválek, F. Krampera and V. Štěrba
    Kinetics of hydrolysis and methanolysis of substituted N-methylformanilides
    1976, Vol. 41, Issue 6, pp. 1685–1691 [Abstract]
  • J. Kaválek, V. Macháček, A. Lyčka and V. Štěrba
    Kinetics of reaction of 2,4-dinitrochlorobenzene with methyl malonate, cyanoacetate and acetoacetate
    1976, Vol. 41, Issue 2, pp. 590–597 [Abstract]
  • J. Kaválek, A. Lyčka, V. Macháček and V. Štěrba
    Kinetics and mechanism of reaction of 1-arylpyridinium salts with acetone and cyclohexanone
    1976, Vol. 41, Issue 1, pp. 67–77 [Abstract]
  • J. Kaválek, I. Kolb, V. Macháček and V. Štěrba
    Reactions of cyanide ion with methyl 3,5-dinitrobenzoate and 3,5-dinitrobenzonitrile
    1975, Vol. 40, Issue 12, pp. 3879–3885 [Abstract]
  • J. Kaválek, A. Lyčka, V. Macháček and V. Štěrba
    Kinetics of reactions of N-arylpyridinium salts with cyanide ion
    1975, Vol. 40, Issue 6, pp. 1932–1939 [Abstract]
  • J. Kaválek and V. Štěrba
    Kinetics of acid-catalyzed hydrolysis of substituted formanilides
    1975, Vol. 40, Issue 6, pp. 1924–1931 [Abstract]
  • V. Beránek, A. Lyčka and V. Štěrba
    Kinetics of reversible reaction of N-arylpyridinium salts with methoxide ions in methanol and methanol-dimethyl sulphoxide mixtures
    1975, Vol. 40, Issue 6, pp. 1919–1923 [Abstract]
  • Ahmad Ashfaq, V. Macháček and V. Štěrba
    Kinetics of reaction of 1-substituted 3,5-dinitrobenzenes with cyclohexanone
    1975, Vol. 40, Issue 6, pp. 1910–1918 [Abstract]
  • J. Kaválek and V. Štěrba
    Kinetics of base-catalyzed hydrolysis of substituted formanilides
    1975, Vol. 40, Issue 4, pp. 1176–1182 [Abstract]
  • J. Kaválek, A. Lyčka, V. Macháček and V. Štěrba
    Reactions of substituted N-phenylpyridinium salts with methoxide and ethoxide ions
    1975, Vol. 40, Issue 4, pp. 1166–1175 [Abstract]
  • V. Macháček and V. Štěrba
    Deuteration kinetics of substituted N-phenylpyridinium salts
    1975, Vol. 40, Issue 4, pp. 1163–1165 [Abstract]
  • J. Kaválek, V. Macháček, V. Štěrba and J. Šubert
    Spectral study of formation of isomeric Meisenheimer complexes from 1-substituted 3,5-dinitrobenzenes and acetone
    1974, Vol. 39, Issue 8, pp. 2063–2072 [Abstract]
  • J. Kaválek, A. Lyčka, V. Macháček and V. Štěrba
    Kinetics and mechanism of reaction of N-(2,4-dinitrophenyl)pyridinium chloride with piperidine. Determination of reaction products and mechanism
    1974, Vol. 39, Issue 8, pp. 2056–2062 [Abstract]
  • V. Beránek, J. Kaválek, A. Lyčka and V. Štěrba
    Kinetics and mechanism of reaction of N-(2,4-dinitrophenyl)pyridinium chloride with piperidine. Determination of rate constants and kinetic equations of individual reaction steps
    1974, Vol. 39, Issue 8, pp. 2047–2055 [Abstract]
  • A. Barteček, J. Kaválek, V. Macháček and V. Štěrba
    Kinetics of reaction of isobutyraldehyde with aniline and its derivatives
    1974, Vol. 39, Issue 7, pp. 1722–1727 [Abstract]
  • J. Kaválek, A. Barteček and V. Štěrba
    Base catalysis in reaction of N-(2,4-dinitrophenyl)pyridinium chloride with aniline and N-methylaniline
    1974, Vol. 39, Issue 7, pp. 1717–1721 [Abstract]
  • J. Kaválek, J. Polanský and V. Štěrba
    Kinetics and mechanism of reaction of substituted N-phenylpyridinium ions with OH- ion
    1974, Vol. 39, Issue 4, pp. 1049–1060 [Abstract]
  • J. Kválek and V. Štěrba
    Reaction kinetics and mechanism of N-(2,4-dinitrophenyl)pyridinium chloride with aniline
    1973, Vol. 38, Issue 11, pp. 3506–3510 [Abstract]
  • J. Jahelka, O. Macháčková, V. Štěrba and K. Valter
    Kinetics and mechanism of syn-anti isomerization of substituted benzenediazohydroxides and diazotates; Suggestion of cis-configuration for anti-diazotates
    1973, Vol. 38, Issue 11, pp. 3290–3298 [Abstract]
  • J. Hoffmann and V. Štěrba
    Kinetics and mechanism of hydrolysis of 3'- and 4'-substituted benzylidene-2-hydroxy-5-methylanilines
    1973, Vol. 38, Issue 10, pp. 3146–3157 [Abstract]
  • J. Hoffmann and V. Štěrba
    Kinetics and mechanism of hydrolysis of substituted N-(5-methylsalicylidene)anilines in acidity range H0 -4 to 4.5
    1973, Vol. 38, Issue 7, pp. 2091–2097 [Abstract]
  • J. Kaválek, Tran Minh Chinh, V. Mikan, V. Štěrba and M. Večeřa
    Kinetics and mechanism of reaction of 2-anilino-4,6-dichloro- and -difluoro-1,3,5-triazine with substituted anilines
    1973, Vol. 38, Issue 7, pp. 1935–1939 [Abstract]
  • J. Kaválek and V. Štěrba
    Kinetics of reaction of 4-substituted 2-nitrofluorobenzenes with piperidine in benzene-acetonitrile mixtures
    1973, Vol. 38, Issue 3, pp. 884–891 [Abstract]
  • J. Jahelka, V. Štěrba and K. Valter
    Nitrosation kinetics and mechanism of resorcinol and its O-methyl derivatives
    1973, Vol. 38, Issue 3, pp. 877–883 [Abstract]
  • J. Jahelka, O. Macháčková and V. Štěrba
    Kinetics and mechanism of formation of substituted benzenediazonium ions from benzenediazohydroxides
    1973, Vol. 38, Issue 3, pp. 706–710 [Abstract]
  • V. Beránek, V. Štěrba and K. Valter
    Kinetics of reaction of m- and p-substituted benzenediazonium ions with OH- ions
    1973, Vol. 38, Issue 1, pp. 257–260 [Abstract]
  • J. Kaválek, J. Kubias and V. Štěrba
    Mechanism of nucleophilic substitution of 2,4-dinitrohalogenobenzenes with N-methylanilines
    1972, Vol. 37, Issue 12, pp. 4041–4045 [Abstract]
  • O. Macháčková and V. Štěrba
    General acid catalysis during transformation of 2,4-dinitrobenzenediazotate ion into diazonium ion
    1972, Vol. 37, Issue 10, pp. 3467–3474 [Abstract]
  • J. Kaválek, J. Haasová and V. Štěrba
    Influence of medium on reactivity of 2,4-dinitrofluoro- and chlorobenzenes during reaction with m- and p-substituted anilines
    1972, Vol. 37, Issue 10, pp. 3333–3338 [Abstract]
  • Tran Minh Chinh, J. Kaválek and M. Večeřa
    Reactivity of cyanuric chloride and fluoride during reaction with meta- and para-substituted anilines
    1972, Vol. 37, Issue 10, pp. 3328–3332 [Abstract]
  • O. Macháčková and V. Štěrba
    Rate and equilibrium constants of the system diazonium ion, syn, anti-diazohydroxide, syn, anti-diazotate
    1972, Vol. 37, Issue 10, pp. 3313–3327 [Abstract]
  • V. Macháček, V. Štěrba and K. Valter
    Kinetics of iodination of resorcinol and its O-methyl derivatives
    1972, Vol. 37, Issue 9, pp. 3073–3080 [Abstract]
  • O. Macháčková, V. Štěrba and K. Valter
    Base catalyzed reactions of 2,6-dichloro-4-nitro- and 2,4-dinitrobenzenediazonium ions with water
    1972, Vol. 37, Issue 7, pp. 2197–2212 [Abstract]
  • J. Hoffmann and V. Štěrba
    Influence of boric acid on hydrolysis rate of salicylideneanilines
    1972, Vol. 37, Issue 6, pp. 2043–2051 [Abstract]
  • O. Macháčková, V. Štěrba and K. Valter
    Kinetics and mechanism of diazo coupling. XXIV. Coupling kinetics of benzenediazonium ions with resorcinol and its O-methyl derivatives
    1972, Vol. 37, Issue 6, pp. 1851–1860 [Abstract]
  • V. Štěrba and K. Valter
    Kinetics and mechanism of diazo coupling. XXIII. Relation between reactivity of substrate and value of reaction constant ρ during coupling with substituted benzenediazonium ions
    1972, Vol. 37, Issue 4, pp. 1327–1330 [Abstract]
  • Tran Minh Chinh, J. Kaválek and M. Večeřa
    Influence of substituents on nucleophilic reactivity of anilines during reaction with cyanur chloride
    1972, Vol. 37, Issue 3, pp. 832–838 [Abstract]
  • V. Štěrba and K. Valter
    Kinetics and mechanism of diazo coupling. XXI. Kinetics of diazo coupling with 1-naphthol and 1-methoxynaphthalene
    1972, Vol. 37, Issue 1, pp. 270–281 [Abstract]
  • J. Hoffmann, J. Klicnar and V. Štěrba
    Influence of -M type substituents on the hydrolysis rate of salicylideneanilines
    1971, Vol. 36, Issue 12, pp. 4057–4063 [Abstract]
  • O. Macháčková and V. Štěrba
    Base catalyzed reactions of 3-nitro-4-halogenobenzenediazonium ions with water
    1971, Vol. 36, Issue 9, pp. 3197–3213 [Abstract]
  • V. Macháček, O. Macháčková and V. Štěrba
    Kinetics and mechanism of diazo coupling. XX. Coupling kinetics of substituted benzenediazonium ions with substituted ω-methylglyoxal phenylhydrazones
    1971, Vol. 36, Issue 9, pp. 3187–3196 [Abstract]
  • P. Vetešník, J. Kaválek and V. Beránek
    Protonation of polyacid organic bases. V. Ionization constants of diacid conjugated acids of 4-substituted 1,2-diaminobenzenes and 6-substituted 2,3-dimethylquinoxalines
    1971, Vol. 36, Issue 7, pp. 2486–2499 [Abstract]
  • J. Kaválek, J. Socha, J. Urbánek and M. Večeřa
    Influence of dimethyl sulfoxide on reactivity of substituted 2-nitrochlorobenzenes and 3-nitro-4-chloroazobenzenes
    1971, Vol. 36, Issue 1, pp. 209–217 [Abstract]
  • J. Kaválek, J. Panchartek and V. Štěrba
    Kinetics and mechanism of diazo coupling. XVIII. Influence of polysubstitution on reactivity and selectivity of benzenediazonium ions in coupling reactions with 2-naphthol-6-sulfonic acid
    1970, Vol. 35, Issue 11, pp. 3470–3474 [Abstract]
  • V. Macháček, J. Panchartek and V. Štěrba
    Kinetics and mechanism of diazo coupling. XIX. Coupling of substituted benzenediazonium salts with acetylacetone
    1970, Vol. 35, Issue 11, pp. 3410–3419 [Abstract]
  • H. Kropáčová, J. Panchartek, V. Štěrba and K. Valter
    Kinetics and mechanism of diazo coupling. XVII. Coupling kinetics of substituted benzenediazonium cations with 1-naphthol and 1-naphthol-4-sulfonic acid
    1970, Vol. 35, Issue 11, pp. 3287–3295 [Abstract]
  • V. Macháček, O. Macháčková and V. Štěrba
    Kinetics and mechanism of diazo coupling. XV. Coupling kinetics of substituted benzenediazonium salts with acetone
    1970, Vol. 35, Issue 10, pp. 2954–2964 [Abstract]
  • V. Macháček, O. Macháčková and V. Štěrba
    Decomposition of substituted 1-nitroacetaldehyde phenylhydrazones in mineral acids
    1970, Vol. 35, Issue 9, pp. 2582–2588 [Abstract]
  • J. Hoffmann, J. Klicnar, V. Štěrba and M. Večeřa
    Kinetics of hydrolysis of substituted salicylideneanilines
    1970, Vol. 35, Issue 5, pp. 1387–1398 [Abstract]
  • I. Dobáš, J. Panchartek, V. Štěrba and M. Večeřa
    Kinetics and mechanism of diazo coupling. XIV. Abnormal reactivity of p-methoxyphenol in electrophilic substitutions of p-substituted phenols
    1970, Vol. 35, Issue 4, pp. 1288–1294 [Abstract]
  • V. Macháček, J. Panchartek, V. Štěrba and M. Večeřa
    Kinetics and mechanism of diazo coupling. XIII. The coupling kinetics of substituted benzenediazonium chlorides with acetoacetanilide
    1970, Vol. 35, Issue 3, pp. 844–856 [Abstract]
  • M. Matrka, J. Marhold, J. Pípalová, V. Zvěřina and V. Štěrba
    Oxydation karzinogener Azofarbstoffe IX. Untersuchung der Zersetzung der oxydierten Form des 4'-Hydroxy-N,N-dimethyl-4-aminoazobenzols
    1970, Vol. 35, Issue 1, pp. 370–374 [Abstract]
  • M. Matrka, J. Marhold, V. Chmátal, V. Štěrba, Z. Ságner and J. Kroupa
    Oxydation karzinogener Azofarbstoffe VIII. Oxydation para-substituierter Derivate des N,N-Dimethyl-4-aminoazobenzols mittels Cer(IV)-sulfats
    1969, Vol. 34, Issue 12, pp. 3952–3958 [Abstract]
  • I. Dobáš, V. Štěrba and M. Večeřa
    Kinetics and mechanism of diazo coupling. XII. The coupling kinetics with 1-phenyl-2,3-dimethylpyrazolin-5-one
    1969, Vol. 34, Issue 12, pp. 3905–3911 [Abstract]
  • I. Dobáš, V. Štěrba and M. Večeřa
    Kinetics and mechanism of diazo coupling. XI. The coupling kinetics of substituted benzenediazonium salts with 1-(4'-sulfophenyl)-3-methylpyrazolin-5-one
    1969, Vol. 34, Issue 12, pp. 3895–3904 [Abstract]
  • I. Dobáš, V. Štěrba and M. Večeřa
    Kinetik und Mechanismus der Azokupplung X. Über die Kupplungskinetik an para-substituierte Phenole
    1969, Vol. 34, Issue 12, pp. 3746–3754 [Abstract]
  • J. Panchartek and V. Štěrba
    Kinetics and mechanism of diazo coupling. VIII. The coupling kinetics of substituted benzenediazonium salts with aminohydroxynaphthalene sulfonic acids
    1969, Vol. 34, Issue 10, pp. 2971–2981 [Abstract]
  • J. Šlosar, V. Štěrba and M. Večeřa
    Studium der polaren und sterischen einflüsse auf die reaktionen der anthrachinonderivate III. Reaktionskinetik der 3- und 4-substituierten 1-chloranthrachinone mit piperidin
    1969, Vol. 34, Issue 9, pp. 2763–2770 [Abstract]
  • J. Kaválek, J. Beneš, J. Socha, F. Brtník and M. Večeřa
    Nucleophile Reaktivität der 3'- und 4'-substituierten 3-Nitro-4-chlorazobenzole
    1969, Vol. 34, Issue 7, pp. 2092–2100 [Abstract]
  • K. Kalfus, J. Šlosar, V. Štěrba and M. Večeřa
    Nucleophile aromatische Substitution in der Anthrachinonreihe II. Korrelation der Dissoziationskonstanten der Anthrachinoncarbonsäuren mit den Hammettschen σ-Konstanten
    1969, Vol. 34, Issue 7, pp. 2083–2091 [Abstract]
  • J. Kaválek
    Studies in the quinoxaline series. VI. Kinetics of the condensation of 2,3-dimethylquinoxaline with benzaldehyde
    1969, Vol. 34, Issue 6, pp. 1819–1823 [Abstract]
  • J. Beneš, J. Kaválek, J. Bartošek and J. Churáček
    Kinetics and mechanism of non-catalysed condensation of 2-picoline with benzaldehyde
    1969, Vol. 34, Issue 3, pp. 819–832 [Abstract]
  • J. Haase, J. Schreiber, V. Štěrba and M. Večeřa
    Bestimmung der Protonierungskonstanten von 1-Phenylazo-2-naphthol-6-sulfonsäure-Derivaten in Wasser und verdünntem Äthanol
    1969, Vol. 34, Issue 1, pp. 57–65 [Abstract]
  • E. Kučerová, J. Panchartek and V. Štěrba
    Kinetik und Mechanismus der Azokupplung IV. Einfluss des Milieus auf die Kupplungskinetik substituierter Benzoldiazoniumkationen mit 2-Naphthol-6-sulfonsäure
    1968, Vol. 33, Issue 12, pp. 4290–4298 [Abstract]
  • V. Macháček, J. Panchartek, V. Štěrba and J. Tunka
    Kinetik und Mechanismus der Azokupplung III. Über die Reaktionskinetik substituierter Benzoldiazoniumkationen mit Nitroäthan
    1968, Vol. 33, Issue 11, pp. 3579–3588 [Abstract]
  • V. Macháček, J. Panchartek, V. Štěrba and M. Večeřa
    Kinetics and mechanism of diazo coupling. II. The coupling of nitroethane with p-nitrobenzenediazonium chloride
    1968, Vol. 33, Issue 10, pp. 3154–3169 [Abstract]
  • P. Vetešník, J. Bielavský, J. Kaválek and M. Večeřa
    Protonierung mehrsättiger organischer Basen IV. Über die Addition des ersten Protons an 4-substituierte 1,2-Phenylendiamine
    1968, Vol. 33, Issue 9, pp. 2902–2910 [Abstract]
  • J. Panchartek, V. Štěrba, J. Vorlíček and M. Večeřa
    Kupplungskinetik der Benzoldiazoniumsalze mit 2-Naphthol-6-sulfonsäure
    1968, Vol. 33, Issue 3, pp. 894–900 [Abstract]
  • J. Kaválek and J. Socha
    Studies in the quinoxaline series. V. Preparation of 3-hydroxy-2-methyl-6-chloro- and 6-sulfamoylquinoxaline
    1968, Vol. 33, Issue 2, pp. 619–622 [Abstract]
  • P. Vetešník, J. Kaválek, V. Beránek and O. Exner
    Protonierung mehrsättiger organischer Basen II. Basizität und Tautomerie-gleichgewicht substituierter Chinoxaline
    1968, Vol. 33, Issue 2, pp. 566–576 [Abstract]
  • M. Matrka, Z. Ságner, V. Chmátal and V. Štěrba
    Zur allgemeinen Gültigkeit der hydrolytischen Reaktion aromatischer Diazoverbindungen zu salpetriger Säure und die Triazenverbindung
    1967, Vol. 32, Issue 7, pp. 2679–2682 [Abstract]
  • M. Matrka, Z. Ságner, V. Chmátal and V. Štěrba
    Beitrag zum Studium der elektrophilen Eigenschaften des Aryldiazoniumions
    1967, Vol. 32, Issue 7, pp. 2532–2539 [Abstract]
  • M. Matrka, Z. Ságner, V. Chmátal, V. Štěrba and M. Veselý
    Über die Bildung von Azoverbindungen bei der Zersetzungsreaktion aromatischer Diazoverbindungen in wässrigem Medium
    1967, Vol. 32, Issue 4, pp. 1462–1471 [Abstract]
  • V. Štěrba and M. Večeřa
    On the rearrangement of aromatic hydrazo compounds. V. Effect of temperature, medium and salt concentration on the kinetics of the rearrangement of hydrazobenzene and discussion of its reaction mechanism
    1966, Vol. 31, Issue 9, pp. 3486–3499 [Abstract]
  • V. Štěrba, J. Arient and J. Šlosar
    Imidazol-Farbstoffe XVII. Nitrierung von 2-Phenylbenzimidazol und seiner Nitroderivate
    1966, Vol. 31, Issue 3, pp. 1093–1100 [Abstract]
  • V. Štěrba, J. Arient and F. Navrátil
    Imidazol-Farbstoffe XVI. Nitrierung der Benzimidazol-Methylderivate
    1966, Vol. 31, Issue 1, pp. 113–121 [Abstract]
  • M. Matrka, J. Marhold, Z. Ságner and V. Štěrba
    Paper chromatography of p-substituted derivatives of 1-aryl-3,3-dimethyltriazene
    1965, Vol. 30, Issue 11, pp. 3956–3958 [Abstract]
  • V. Štěrba, Z. Ságner and M. Matrka
    Diazotierungskinetik der Nitraniline in Chlorwasserstoffsäure-Milieu
    1965, Vol. 30, Issue 10, pp. 3333–3338 [Abstract]
  • V. Štěrba, Z. Ságner and M. Matrka
    Oxydation von Dimethylanilin
    1965, Vol. 30, Issue 7, pp. 2477–2480 [Abstract]
  • V. Štěrba, Z. Ságner and M. Matrka
    Oxydation von para-ständig substituierten Dimethylanilinderivaten
    1965, Vol. 30, Issue 7, pp. 2475–2477 [Abstract]
  • M. Matrka, F. Navrátil, V. Štěrba and J. Arient
    Polarographische Bestimmung von 2,2'-Bis-pyrazolanthron neben Pyrazolanthron
    1961, Vol. 26, Issue 7, pp. 1763–1767 [Abstract]
  • M. Večeřa, L. Synek and V. Štěrba
    Über die Umlagerung aromatischer Hydrazoverbindungen IV. Untersuchung der sauren Katalyse und des Einflusses des Mediums und der Temperatur bei der Umlagerung von Hydrazobenzol
    1960, Vol. 25, Issue 8, pp. 1992–2004 [Abstract]