Collect. Czech. Chem. Commun.
1980, 45, 3150-3159
https://doi.org/10.1135/cccc19803150
The effect of crown ether on steric hindrance to base approach in bimolecular elimination: evidence against clump aggregate model of ion-paired alkoxide base
Magdalena Pánková and Jiří Závada
Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6
Individual author index pages
Other CCCC articles of these authors
- Petr Holý*, Martin Havlík, Miloš Tichý, Jiří Závada* and Ivana Císařová
Synthesis and Self-Assembly of 9,9'-Spirobifluorene-2,2',7,7'-tetracarboxylic Acid and Its Tetraamide. Non-Catenated Formation of Achiral Grid Layers with Large Chiral Pores
2006, Vol. 71, Issue 2, pp. 139–154 [Abstract] - Martin Bělohradský, Luděk Ridvan and Jiří Závada*
Synthesis of Homochiral Acyclic Mono- and Bis(α-amino acid)s with Oligo(oxyethylene) Chains
2003, Vol. 68, Issue 7, pp. 1319–1325 [Abstract] - Petr Sehnal, Petr Holý*, Miloš Tichý, Jiří Závada* and Ivana Císařová
4,4'-Bipyridine-2,2',6,6'-tetracarboxamide. Synthesis and Self-Assembling Properties of the Free Base and the 1 : 1 Silver(I) Triflate Complex
2002, Vol. 67, Issue 8, pp. 1236–1246 [Abstract] - Petr Holý, Jaroslav Podlaha, Ivana Císařová and Jiří Závada*
Self-Assembly of 1,1'-Biphenyl-2,2',6,6'-tetracarboxamides. Effect of Substitution at the Amidic Nitrogen
2001, Vol. 66, Issue 6, pp. 947–958 [Abstract] - Petr Holý, Jiří Závada*, Josef Zezula, Ivana Císařová and Jaroslav Podlaha
Formation of Infinite Grids with Chiral Square Compartments by Self-Assembly of Achiral 1,1'-Biphenyl-2,2',6,6'-tetracarboxylic Acids. Effect of 4,4'-Substitution on the Grid Stacking
2001, Vol. 66, Issue 5, pp. 820–832 [Abstract] - Jaroslav Podlaha, Ivana Císařová, Daniel Alexander, Petr Holý, Tomáš Kraus and Jiří Závada*
Topological Correspondence Between Crystal Structure of 2,4,6-Trimethylbenzene-1,3,5-tris(methanaminium) 2,4,6-Trimethylbenzene-1,3,5-triacetate and Cesium Chloride
2000, Vol. 65, Issue 10, pp. 1587–1596 [Abstract] - Daniel Alexander, Stanislav Böhm, Ivana Císařová, Petr Holý, Jaroslav Podlaha, Miroslav Šlouf and Jiří Závada*
Sterically Crowded Hexaalkyl Benzene-1,2,3,4,5,6-hexakis[α-(alkoxycarbonyl)propanoates]. Synthesis and Conformation Analysis
2000, Vol. 65, Issue 5, pp. 673–694 [Abstract] - Martin Chadim, Miloš Buděšínský, Jana Hodačová and Jiří Závada*
A Covalently Bound Template in the Regioselective Synthesis of Bis(tetraazacrown)s
2000, Vol. 65, Issue 1, pp. 99–105 [Abstract] - Jana Hodačová*, Jiří Závada and Peter C. Junk
Regioselective Double Cyclisation of 1,2,4,5-Tetrakis(bromomethyl)benzene with Tosylated Diethylenetriamine. Towards Conformationally Biased Bis(perazacrown) Receptors
1999, Vol. 64, Issue 11, pp. 1827–1832 [Abstract] - Tomáš Kraus, Miloš Buděšínský and Jiří Závada
Novel Amphiphilic Cyclodextrins: Per[6-deoxy-6-(4,5-dicarboxy-1,2,3-triazol-1-yl)-2,3-di-O-methyl] Derivatives
1998, Vol. 63, Issue 4, pp. 534–540 [Abstract] - Miloš Tichý, Luděk Ridvan, Miloš Buděšínský, Jiří Závada, Jaroslav Podlaha and Ivana Císařová
Axially Chiral Bis(α-amino Acid)s and Their Deamino Analogues. Synthesis and Configurational Assignment
1998, Vol. 63, Issue 2, pp. 211–221 [Abstract] - Miloš Tichý, Jana Günterová and Jiří Závada
Novel Intramolecular Induction of Axial Chirality by a Centrally Chiral Element in the Biphenyl Series
1997, Vol. 62, Issue 7, pp. 1080–1088 [Abstract] - Miloš Tichý, Luděk Ridvan and Jiří Závada
Comparison of (R)-(-)-6,6'-Bis(3,5-dinitrobenzamido)biphenyl-2,2'-dicarboxylic and (S)-(+)-6,6'-Bis-(3,5-dinitrobenzamidomethyl)biphenyl-2,2'-dicarboxylic Acids as Chiral HPLC Selectors
1997, Vol. 62, Issue 1, pp. 62–68 [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] - Jaroslav Podlaha, Ivana Císařová, Martin Bělohradský and Jiří Závada
Crystal and Molecular Structure of cis-2,2',3',2"-Tetraacetoxy-1,1':4',1"-ternaphthyl
1996, Vol. 61, Issue 5, pp. 726–732 [Abstract] - Miloš Tichý and Jiří Závada
Preparation of (R)-(-)-6,6'-Bis(3,5-dinitrobenzamido)biphenyl-2,2'-dicarboxylic Acid, a Potential Chiral HPLC Selector
1995, Vol. 60, Issue 12, pp. 2161–2164 [Abstract] - Miloš Tichý, Jana Holanová, Ivo Starý, Irena G. Stará and Jiří Závada
Axially Chiral Selectors of C2 Symmetry Bound to Silica: Synthesis and HPLC-Evaluation
1995, Vol. 60, Issue 4, pp. 645–658 [Abstract] - Vladimír Král, Magdalena Pánková, Jana Günterová, Martin Bělohradský and Pavel Anzenbacher, Jr.
Synthesis of Porphyrin Heterobinuclear Ligands
1994, Vol. 59, Issue 3, pp. 639–648 [Abstract] - Martin Bělohradský, Petr Holý, Juraj Koudelka and Jiří Závada
1,2-Bis(azacrown)ethanes: Effect of Bridge Substitution and Ring Size on Formation of Sandwich Complexes with Sodium and Potassium Ions
1993, Vol. 58, Issue 1, pp. 153–158 [Abstract] - Petr Holý, Juraj Koudelka, Martin Bělohradský, Ivan Stibor and Jiří Závada
Bis(monoazacrown ether)s: Effects of bridge length and ring size on stability and selectivity in alkali ion sandwich complex formation
1991, Vol. 56, Issue 7, pp. 1482–1488 [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] - Jiří Závada, Václav Pechanec and Oldřich Kocián
Anion effect on alkali ion-crown complex formation in a moderately concentrated solutions: A sensitive probe of hidden interionic interactions operating in dissociating protic solvents
1990, Vol. 55, Issue 5, pp. 1149–1161 [Abstract] - Jiří Závada and Magdalena Pánková
Preferential cis-olefin formation: A striking resemblance between alkali-alkoxide and alumina promoted eliminations in low polar solvents
1990, Vol. 55, Issue 3, pp. 704–709 [Abstract] - Jiří Závada, Magdalena Pánková and Antonín Vítek
On the origin of base concentration effect on stereo- and regioselectivity in alkoxide-promoted E2 reactions: A consequence of substrate solvation by metal ions
1990, Vol. 55, Issue 3, pp. 695–703 [Abstract] - Jiří Závada, Juraj Koudelka, Petr Holý, Martin Bělohradský and Ivan Stibor
Bis(monoazacrown ethers) with an electron-donating substituent at the hinge: A pronounced participation of hydroxyl group in formation of sodium ion sandwich complexes
1989, Vol. 54, Issue 4, pp. 1043–1054 [Abstract] - Petr Holý, Martin Bělohradský, Ivan Stibor, Juraj Koudelka, David Šaman, Jana Hodačová, Antonín Holý and Jiří Závada
Crown and azacrown ethers with pendant adenine group
1987, Vol. 52, Issue 12, pp. 2971–2982 [Abstract] - Martin Bělohradský, Petr Holý, Ivan Stibor and Jiří Závada
A versatile synthesis of oligocrown compounds with hydroxyl groups at the hinge
1987, Vol. 52, Issue 12, pp. 2961–2970 [Abstract] - Martin Bělohradský, Ivan Stibor, Petr Holý and Jiří Závada
A convenient synthesis of crown and azacrown ethers with pendant oxirane group
1987, Vol. 52, Issue 10, pp. 2500–2507 [Abstract] - Ivan Stibor, Oldřich Kocián, Petr Holý and Jiří Závada
Procedure for large-scale preparations of oligoethylene glycol toluenesulphonates
1987, Vol. 52, Issue 8, pp. 2057–2060 [Abstract] - Jiří Závada, Václav Pechanec, Jaroslav Zajíček, Ivan Stibor and Antonín Vítek
Effects of salt concentration and counterion on stability of alkali ion-18-crown-6 complexes in aqueous and methanolic solution: A conflicting evidence from potentiometric and sodium-23 NMR studies
1985, Vol. 50, Issue 5, pp. 1184–1193 [Abstract] - Jiří Závada, Josef Krupička, Oldřich Kocián and Magdalena Pánková
Electrochemical dehalogenation of open-chain vicinal dihalides at mercury cathodes: The effect of leaving group identity on E1/2 values and on steric course
1983, Vol. 48, Issue 12, pp. 3552–3558 [Abstract] - Magdalena Pánková, Oldřich Kocián, Josef Krupička and Jiří Závada
syn-anti Dichotomy in zinc-promoted dehalogenation of open-chain vicinal dihalides: The effect of the leaving groups
1983, Vol. 48, Issue 10, pp. 2944–2951 [Abstract] - Jiří Závada, Václav Pechanec and Oldřich Kocián
The effect of counterion on alkali ion-crown complex formation: A near-paradox in dissociating solvents
1983, Vol. 48, Issue 9, pp. 2509–2517 [Abstract] - Václav Pechanec, Oldřich Kocián and Jiří Závada
Crowns in alkali alkoxide-conjugate acid solutions: A remarkably low propensity to complex formation
1983, Vol. 48, Issue 4, pp. 1144–1157 [Abstract] - Václav Pechanec, Oldřich Kocián and Jiří Závada
Effects of structure and concentration on ionic association in alkali alkoxide-conjugate acid solutions: Reluctance to formation of ion-pair aggregates
1982, Vol. 47, Issue 12, pp. 3405–3411 [Abstract] - Oldřich Kocián, Karel Stránský and Jiří Závada
Heteroanalogues of 1-triacontanol
1982, Vol. 47, Issue 5, pp. 1356–1366 [Abstract] - Oldřich Kocián, Karel Stránský and Jiří Závada
Unsaturated analogues of 1-triacontanol
1982, Vol. 47, Issue 5, pp. 1346–1355 [Abstract] - Jiří Závada, Magdalena Pánková and Antonín Vítek
The search for the active base operating in alkoxide promoted E2 reactions in low polar solvents: A kinetic analysis of the elusive problem
1981, Vol. 46, Issue 13, pp. 3247–3263 [Abstract] - Václav Pechanec, Oldřich Kocián, Vlastimil Halaška, Magdalena Pánková and Jiří Závada
Degrees of association of alkali tert-butoxides in tert-butanol in the absence and in the presence of crowns: An ebulliometric study
1981, Vol. 46, Issue 9, pp. 2166–2177 [Abstract] - Jiří Závada, Magdalena Pánková, Richard A. Bartsch and Bong Rae Cho
The effect of base concentration on orientation in E2 reactions: A common feature in metal alkoxide promoted olefin formation from alkyl halides and tosylates
1981, Vol. 46, Issue 4, pp. 850–855 [Abstract] - Zuzana Machková and Jiří Závada
The effect of phenyl substituents on elimination stereochemistry: A mechanistic manifold in alkoxide promoted decomposition of 1-phenyl-1-propyltrimethylammonium ion
1981, Vol. 46, Issue 4, pp. 833–849 [Abstract] - Jiří Závada and Magdalena Pánková
The effect of steric size of leaving group on rates of the competing syn- and anti-pathways in biomolecular elimination
1980, Vol. 45, Issue 8, pp. 2171–2178 [Abstract] - Jiří Závada and Magdalena Pánková
The syn-anti dichotomy in bimolecular elimination of alkyltrimethylammonium salts: Steric and polar effects on rates and orientation in the competing pathways
1979, Vol. 44, Issue 4, pp. 1273–1295 [Abstract] - Jiří Závada and Magdalena Pánková
E2-SN2 Competition: The effect of crown ether, leaving group and solvent in the reaction of 1-nonyl derivatives with potassium tert-butoxide
1978, Vol. 43, Issue 4, pp. 1080–1086 [Abstract]