Collect. Czech. Chem. Commun.
1978, 43, 1261-1275
https://doi.org/10.1135/cccc19781261
N,N-Dimethyl-N-alkylammoniodiformylmethylides: New group of stabilised aliphatic ylides
Miroslav Svoboda, Miroslava Synáčková, Zdeněk Samek, Pavel Fiedler and Zdeněk Arnold
Individual author index pages
Other CCCC articles of these authors
- Alois Pískala, Naeem B. Hanna, Milena Masojídková, Miroslav Otmar and Pavel Fiedler
Synthesis of N4-alkyl-5-azacytidines and their base pairing with carbamoylguanidines – a contribution to explanation of the mutagenicity of 5-aza-2'-deoxycytidine
Symposium Series 1999, Vol. 2, pp. 248–251 [Abstract]
Published online 2016-05-08 23:31:28 - Angelina Andronova, Florence Szydlo, Filip Teplý, Miroslava Tobrmanová, Amandine Volot, Irena G. Stará*, Ivo Starý*, Lubomír Rulíšek, David Šaman, Josef Cvačka, Pavel Fiedler and Pavel Vojtíšek
The quest for alternative routes to racemic and nonracemic azahelicene derivatives
2009, Vol. 74, Issue 1, pp. 189–215 [Abstract] - Zuzana Krausová, Petr Sehnal, Filip Teplý, Irena G. Stará*, Ivo Starý*, David Šaman, Josef Cvačka and Pavel Fiedler
Synthesis of Methoxy Substituted Centrally Chiral Triynes as Precursors of Functionalised Nonracemic Helicene-Like Compounds
2007, Vol. 72, Issue 11, pp. 1499–1522 [Abstract] - Zuzana Alexandrová, Irena G. Stará*, Petr Sehnal, Filip Teplý, Ivo Starý*, David Šaman and Pavel Fiedler
Synthetic Studies Toward Chiral Aromatic Triynes as Key Substrates for the Asymmetric Synthesis of Helicene-Like Molecules
2004, Vol. 69, Issue 12, pp. 2193–2211 [Abstract] - Alois Pískala*, Naeem B. Hanna, Milena Masojídková, Pavel Fiedler and Ivan Votruba
Synthesis of N4-Amino and N4-Hydroxy Derivatives of 5-Azacytidine. A Facile Rearrangement of the N4-Amino Derivative to 5-(3-β-D-Ribofuranosylureido)-1H-1,2,4-triazole
2004, Vol. 69, Issue 4, pp. 905–917 [Abstract] - Pavel Fiedler and Otto Exner*
Conformation of Aromatic Carbonyl Derivatives: An Infrared Study
2004, Vol. 69, Issue 4, pp. 797–810 [Abstract] - Irena G. Stará*, Ivo Starý*, Adrian Kollárovič, Filip Teplý, David Šaman and Pavel Fiedler
Synthesis of Helicene Scaffolds via [2+2+2] Cycloisomerization of Aromatic Triynes
2003, Vol. 68, Issue 5, pp. 917–930 [Abstract] - Alois Pískala*, Naeem B. Hanna, Milena Masojídková, Miroslav Otmar, Pavel Fiedler and Karel Ubik
Synthesis of N4-Alkyl-5-azacytidines and Their Base-Pairing with Carbamoylguanidines - A Contribution to Explanation of the Mutagenicity of 2'-Deoxy-5-azacytidine
2003, Vol. 68, Issue 4, pp. 711–743 [Abstract] - Irena G. Stará*, Adrian Kollárovič, Filip Teplý, Ivo Starý*, David Šaman and Pavel Fiedler
Synthesis of Aromatic Triynes as Precursors to Helicene Derivatives
2000, Vol. 65, Issue 4, pp. 577–609 [Abstract] - Pavel Fiedler, Jiří Kulhánek, Michèle Decouzon, Jean-François Gal, Pierre-Charles Maria and Otto Exner*
Steric Effects and Steric Inhibition of Resonance in Isopropylbenzoic Acids in the Gas Phase and in Solution
1999, Vol. 64, Issue 9, pp. 1433–1447 [Abstract] - Irena G. Stará*, Ivo Starý*, Adrian Kollárovič, Filip Teplý, David Šaman and Pavel Fiedler
Coupling Reactions of ortho-Substituted Halobenzenes with Alkynes. The Synthesis of Phenylacetylenes and Symmetrical or Unsymmetrical 1,2-Diphenylacetylenes
1999, Vol. 64, Issue 4, pp. 649–672 [Abstract] - Naeem B. Hanna, Milena Masojídková, Pavel Fiedler and Alois Pískala
Synthesis of Some 6-Substituted 5-Azacytidines
1998, Vol. 63, Issue 2, pp. 222–230 [Abstract] - Zdeněk Arnold, Dalimil Dvořák and Miroslav Havránek
Convenient Preparation of 1,3-Bis(dimethylamino)trimethinium Perchlorate, Tetrafluoroborate and Hexafluorophosphate
1996, Vol. 61, Issue 11, pp. 1637–1641 [Abstract] - Daniel Alexander, Petr Holý, Pavel Fiedler, Zdeněk Havlas and Jiří Závada
Symmetrical Tris(4,6-diamino-5-methylene-2-pyrimidones): New Building Blocks for Self-Assembly of Hollow Spherical Supramolecules Locked by Hydrogen Bonds
1996, Vol. 61, Issue 10, pp. 1464–1472 [Abstract] - Zdeněk Arnold and Tomáš Kraus
Synthesis of nucleosides derived from 2,3-dihydro-2-oxo-1H-imidazol-4-carbaldehyde
1993, Vol. 58, Special Issue, pp. S262–S264 [Abstract] - Alois Pískala, Milena Masojídková, David Šaman and Pavel Fiedler
Structure of 5-azacytosine nucleosides in acid solutions
1993, Vol. 58, Special Issue, pp. S26–S28 [Abstract] - Dalimil Dvořák, David Šaman, Zdeněk Arnold, Ivana Císařová and Václav Petříček
Cycloaddition Reactions of Arylmethylenemalonaldehydes with Olefins
1992, Vol. 57, Issue 11, pp. 2337–2358 [Abstract] - Jiří Burkhard and Zdeněk Arnold
Reactions of Triformylmethane with Adamantane Derivatives Containing Primary Amino Group
1992, Vol. 57, Issue 9, pp. 1947–1950 [Abstract] - Miroslav Svoboda, Bohdan Schneider and Jan Štokr
Infrared spectroscopic study of the products of thermal degradation of polyamides in inert atmosphere
1991, Vol. 56, Issue 7, pp. 1461–1476 [Abstract] - Zdeněk Arnold, Miloš Buděšínský and Magdalena Pánková
Reactivity of triformylmethane. I. Reactions of triformylmethane with selected types of amino compounds
1991, Vol. 56, Issue 5, pp. 1019–1031 [Abstract] - Ivan Stibor, David Šaman and Pavel Fiedler
Synthesis and conformation of some 6-aminomethyluracil amides
1990, Vol. 55, Issue 11, pp. 2731–2737 [Abstract] - Miroslav Svoboda, Jan Štokr and Bohdan Schneider
IR-spectroscopic study of the condensation products of heat-degradation of polyethylene and polypropylene in inert atmosphere
1990, Vol. 55, Issue 9, pp. 2233–2243 [Abstract] - Vladimír Král, Mikhail Ivanovich Kanishchev, Viktor Vladimirovich Semenov, Zdeněk Arnold, Svyatoslav Arkadievich Shevelev and Albert Aleksandrovich Fainzilberg
Synthetic utilization of N-diformylmethylazoles: The preparation of 1-heteryl-4-nitropyrazoles
1988, Vol. 53, Issue 7, pp. 1529–1533 [Abstract] - Vladimír Král, Viktor Vladimirovich Semenov, Mikhail Ivanovich Kanishchev, Zdeněk Arnold, Svyatoslav Arkadievich Shevelev and Albert Aleksandrovich Fainzilberg
A general method of preparation of N-diformylmethylazoles and cycloimonium diformyl methylides
1988, Vol. 53, Issue 7, pp. 1519–1528 [Abstract] - Tibor Gracza, Zdeněk Arnold and Jaroslav Kováč
Synthesis of pyridazines via furan vinamidinium salts
1988, Vol. 53, Issue 6, pp. 1297–1301 [Abstract] - Tibor Gracza, Zdeněk Arnold and Jaroslav Kováč
Electrophilic ipso substitutions of furan vinamidinium salts
1988, Vol. 53, Issue 5, pp. 1053–1059 [Abstract] - Dalimil Dvořák, David Šaman, Miloš Buděšínský and Zdeněk Arnold
Arbuzov rearrangement in the reaction of arylmethylenemalonaldehydes with trimethyl phosphite: Formation of 2-(α-dimethoxyphosphonylbenzyl)-3-methoxyacroleins
1987, Vol. 52, Issue 12, pp. 2926–2935 [Abstract] - Dalimil Dvořák and Zdeněk Arnold
Reaction of arylmethylenemalonaldehydes with some nucleophiles
1987, Vol. 52, Issue 11, pp. 2699–2709 [Abstract] - Dalimil Dvořák, David Šaman, Jana Hodačová, Vladimír Král and Zdeněk Arnold
Michael reaction of methylenemalonaldehydes: Synthetic approach to 4H-pyran-5-carboxaldehydes and 2-amino-4H-pyran-5-carboxaldehydes
1987, Vol. 52, Issue 11, pp. 2687–2698 [Abstract] - Otto Exner and Pavel Fiedler
Conformation and electronic structure of aromatic chloroformates
1987, Vol. 52, Issue 4, pp. 970–979 [Abstract] - Tapani A. Pakkanen, Vesa Nevalainen, Vladimír Král, Reino Laatikainen and Zdeněk Arnold
Structural investigations of substituted methylenemalonaldehydes by X-ray crystallography and NMR spectroscopy
1987, Vol. 52, Issue 3, pp. 714–726 [Abstract] - Tibor Gracza, Zdeněk Arnold and Jaroslav Kováč
New method of preparation of 5-(N,N-dimethylamino)-2-furylethylenes via furan vinamidinium salts
1986, Vol. 51, Issue 4, pp. 879–888 [Abstract] - Tibor Gracza, Zdeněk Arnold and Jaroslav Kováč
New type of addition to 5-substituted 4-arylidene-2-(4,5-dihydrofurfurylidene)-N,N-dimethyliminium bisperchlorates. Preparation of 4-substituted 5-(N,N-dimethylamino)-2-furancarbaldehydes
1986, Vol. 51, Issue 3, pp. 573–580 [Abstract] - Ludmila A. Yanovskaya, Galya V. Kryshtal, Dalimil Dvořák, Vladimír Král and Zdeněk Arnold
Substituted methylenemalonaldehydes: Condensation of dialdehydes with 1,3-bis(dimethylamino)trimethinium perchlorate
1985, Vol. 50, Issue 10, pp. 2270–2274 [Abstract] - Zdeněk Arnold and Dalimil Dvořák
Benzylidenemalonaldehydes: Synthesis of 4-aryl-2-dimethylamino-4H-1,3-oxazine-5-carboxaldehyde
1985, Vol. 50, Issue 10, pp. 2265–2269 [Abstract] - Dalimil Dvořák, Miloš Buděšínský, David Šaman and Zdeněk Arnold
Benzylidenemalonaldehydes: A redox reaction during the attempted cycloaddition on nitrosobenzene
1985, Vol. 50, Issue 10, pp. 2260–2264 [Abstract] - Ludmila A. Yanovskaya, Galya V. Kryshtal, Dalimil Dvořák, Vladimír Král and Zdeněk Arnold
Synthesis of polyenylidenemalonaldehydes
1985, Vol. 50, Issue 6, pp. 1300–1304 [Abstract] - Tibor Gracza, Zdeněk Arnold and Jaroslav Kováč
Reaction of vinamidinium salts of furan with aldehydes
1985, Vol. 50, Issue 3, pp. 675–682 [Abstract] - Zdeněk Arnold, Dalimil Dvořák and Vladimír Král
Vinylogues and heterocyclic analogues of benzylidenemalonaldehydes
1984, Vol. 49, Issue 11, pp. 2613–2619 [Abstract] - Zdeněk Arnold, Vladimír Král and Dalimil Dvořák
Synthesis of benzylidenemalonaldehydes
1984, Vol. 49, Issue 11, pp. 2602–2612 [Abstract] - Zdeněk Friedl, Pavel Fiedler, Ján Biroš, Věra Uchytilová, Igor Tvaroška, Stanislav Böhm and Otto Exner
Electrostatic effects on conformational equilibria: Solvation enthalpies and the reaction field theory
1984, Vol. 49, Issue 9, pp. 2050–2069 [Abstract] - Tibor Gracza, Zdeněk Arnold and Jaroslav Kováč
Vinamidium salts having a furan ring and their substitution electrophilic reactions
1984, Vol. 49, Issue 7, pp. 1600–1604 [Abstract] - Otto Exner, Zdeněk Friedl and Pavel Fiedler
Electrostatic effects on conformational equilibria: Alkyl 2-cyanobenzoates and 3-cyanopropenoates
1983, Vol. 48, Issue 11, pp. 3086–3096 [Abstract] - Miroslav Holub, Zdeněk Samek, Miloš Buděšínský, David Šaman, Ełżbieta Błoszyk and Bohdan Drożdż
8α-Hydroxybalchanin - A new sesquiterpenic lactone from Leucanthemella serotina (L.) TZVEL.
1982, Vol. 47, Issue 11, pp. 2927–2931 [Abstract] - Patricia Sierra, Ladislav Novotný, Zdeněk Samek, Miloš Buděšínský, Ladislav Dolejš and Karel Bláha
Alkaloids of Rauvolfia salicifolia GRISEB species
1982, Vol. 47, Issue 11, pp. 2912–2921 [Abstract] - Juraj Harmatha and Zdeněk Samek
Diethylamine addition to natural sesquiterpenic α-exomethylene-γ-lactones and its use for chemical transformations of these compounds
1982, Vol. 47, Issue 10, pp. 2779–2785 [Abstract] - Miroslav Holub, Miloš Buděšínský, Zdeněk Samek, Bohdan Drożdż, Halina Grabarczyk, Ayhan Ulubelen, Sevil Öksüz and Urszula Rychłewska
Absolute configuration of xerantholide, a sesquiterpenic lactone from Anthemis austriaca JACQ.
1982, Vol. 47, Issue 2, pp. 670–675 [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] - 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] - Josef Jizba, Věra Laudová, Zdeněk Samek, Karel Ubik and Ladislav Novotný
Components of Senecio nemorensis var. subdecurens
1981, Vol. 46, Issue 4, pp. 1048–1053 [Abstract] - Zdeněk Samek, Tomáš Vaněk and Miroslav Holub
Unusual cyclization in the 11-hydroxy-1βH,5βH,6βH,7αH-guaian-6,12-olide series
1981, Vol. 46, Issue 4, pp. 941–946 [Abstract] - Vladimír Král, Zdeněk Arnold and Zdeněk Havlas
Semiempirical and ab initio study of the nature of the C-S bond in sulfonium ylides
1981, Vol. 46, Issue 4, pp. 883–891 [Abstract] - Zdeněk Havlas, Miroslava Synáčková, Hubert Hřebabecký, Jiří Farkaš and Jiří Beránek
NMR and quantum chemical study of empiric 2',3'-cyclic sulphites of nucleosides
1981, Vol. 46, Issue 2, pp. 400–408 [Abstract] - Miloš Buděšínský, Zdeněk Samek and Miloš Tichý
In situ reactions of amines and amino alcohols and their application to structural assignment by 1H NMR spectroscopy
1980, Vol. 45, Issue 10, pp. 2784–2803 [Abstract] - Wojciech T. Markiewicz, Nelly Sh. Padyukova, Zdeněk Samek and Jiří Smrt
The reaction of 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane with cytosine arabinoside and 1-(6-deoxy-α-L-talofuranosyl)uracil
1980, Vol. 45, Issue 6, pp. 1860–1865 [Abstract] - Zdeněk Friedl, Pavel Fiedler and Otto Exner
Electrostatic effects on conformational equilibria. Solvent dependence
1980, Vol. 45, Issue 5, pp. 1351–1360 [Abstract] - Otto Exner and Pavel Fiedler
A refined empirical model of the sigma-inductive effect
1980, Vol. 45, Issue 4, pp. 1251–1268 [Abstract] - Vladimír Král, Zdeněk Arnold, Václav Jehlička and Otto Exner
Quantum chemical study of sulfonium ylides: Structure, charge distribution and dipole moments
1980, Vol. 45, Issue 4, pp. 1236–1250 [Abstract] - Vladimír Král and Zdeněk Arnold
Study of some aliphatic ammonium ylides by semiempirical and ab initio methods: Structure and charge distribution
1980, Vol. 45, Issue 1, pp. 92–103 [Abstract] - Vladimír Král and Zdeněk Arnold
Trimethylammoniodiformylmethylide: Structure and charge distribution
1980, Vol. 45, Issue 1, pp. 80–91 [Abstract] - Pavel Kočovský, Václav Černý and Miroslava Synáčková
Participation of 19-ester groups in hypobromous acid additions to 2,3- and 5,6-unsaturated steroids
1979, Vol. 44, Issue 5, pp. 1483–1495 [Abstract] - Zdeněk Samek, Miroslav Holub, Vlastimil Herout, Ełżbieta Błoszyk and Bohdan Drożdż
Isoerivanin and dehydroisoerivanin - Minor sesquiterpene lactone components from Balsamita major DESF.
1979, Vol. 44, Issue 5, pp. 1468–1474 [Abstract] - Jiří Mollin, Pavel Fiedler, Václav Jehlička and Otto Exner
The conformation of substituted hydroxyureas and hydroxythioureas in solution
1979, Vol. 44, Issue 3, pp. 895–907 [Abstract] - Zdeněk Samek and Miloš Buděšínský
In situ reactions with trichloroacetyl isocyanate and their application to structural assignment of hydroxy compounds by 1H NMR spectroscopy. A general comment
1979, Vol. 44, Issue 2, pp. 558–588 [Abstract] - Helena Velgová, Miroslava Synáčková and Václav Černý
Preparation of some 3α,5-cycloandrostane derivatives with expanded ring B
1979, Vol. 44, Issue 1, pp. 260–268 [Abstract] - Jiří Dědina, Jan Schraml, Zdeněk Arnold and Jana Šauliová
Homonuclear Overhauser effect study of trimethinium salts
1978, Vol. 43, Issue 12, pp. 3356–3364 [Abstract] - Zdeněk Samek
On the validity of the "cis/trans" lactone rule for allylic coupling constants of the α-exomethylene protons in natural sesquiterpenic α-exomethylene γ-lactones
1978, Vol. 43, Issue 12, pp. 3210–3226 [Abstract] - Zdeněk Samek and Juraj Harmatha
Use of structural changes for stereochemical assignments of natural α-exomethylene γ-lactones of the germacra-1(10),4-dienolide type on the basis of allylic and vicinal couplings of bridgehead protons. Hydrogenation of endocyclic double bonds
1978, Vol. 43, Issue 10, pp. 2779–2799 [Abstract] - Miroslav Holub, Otakar Motl and Zdeněk Samek
The structure and relative and absolute configurations of the sesquiterperpenic lactones gradolide and polhovolide from Laserpitium siler L.
1978, Vol. 43, Issue 9, pp. 2471–2477 [Abstract] - Miroslav Holub, Zdeněk Samek, Soňa Vašíčková and Milena Masojídková
11-Hydroxy-1βH,5βH,6αH,7αH-guaian-6,12-olides: Relative and absolute configuration of the sesquiterpenic lactones montanolide, isomontanolide, acetylisomontanolide and related substances
1978, Vol. 43, Issue 9, pp. 2444–2470 [Abstract] - Miloš Tichý, Ladislav Kniežo and Miroslav Svoboda
Hofmann reaction of quaternary salts of 4-dimethylamino-5-twistanols: Dependence of its course on the torsion angle
1978, Vol. 43, Issue 8, pp. 2165–2169 [Abstract] - Miroslav Svoboda, Soňa Vašíčková and Zdeněk Arnold
Ammoniodicyanomethylides: Synthesis and properties
1978, Vol. 43, Issue 5, pp. 1254–1260 [Abstract] - Vladimír Král and Zdeněk Arnold
Preparation and properties of dimethylsulfoniodiformylmethylide
1978, Vol. 43, Issue 5, pp. 1248–1253 [Abstract] - Josef Jizba, Zdeněk Samek, Ladislav Novotný, Elinka Najdenová and Anna Boeva
Components of Senecio nemorensis var. bulgaricus (VEL. PRO. SP.)
1978, Vol. 43, Issue 4, pp. 1113–1124 [Abstract]
