Search Results - "Fiedler, Pavel"

Asymmetric Synthesis of Diastereo‐ and Enantiopure Bioxahelicene 2,2′‐Bipyridines by Klívar, Jiří, Šámal, Michal, Jančařík, Andrej, Vacek, Jaroslav, Bednárová, Lucie, Buděšínský, Miloš, Fiedler, Pavel, Starý, Ivo, Stará, Irena G.

“…A versatile asymmetric synthesis of five C2 symmetric enantio‐ and diastereopure bioxa[5]‐ and bioxa[6]helicene 2,2′‐bipyridines was developed. It relied…”
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Highly modular assembly of cationic helical scaffolds: rapid synthesis of diverse helquats via differential quaternization by Severa, Lukáš, Adriaenssens, Louis, Vávra, Jan, Šaman, David, Císařová, Ivana, Fiedler, Pavel, Teplý, Filip

“…A protocol for rapid and highly modular assembly of a diverse set of helquats is described. From a common bis-isoquinoline precursor, two successive distinct…”
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Synthesis of 3-Hexahelicenol and Its Transformation to 3-Hexahelicenylamines, Diphenylphosphine, Methyl Carboxylate, and Dimethylthiocarbamate by Teplý, Filip, Stará, Irena G, Starý, Ivo, Kollárovič, Adrian, Šaman, David, Vyskočil, Štěpán, Fiedler, Pavel

“…A nonphotochemical synthetic route to 3-hexahelicenol is reported. It involves a key [2+2+2] cycloisomerization of CH3O-substituted triyne that is readily…”
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A Convenient Route to 2-Hydroxy- and 2,15-Dihydroxyhexahelicene by Teplý, Filip, Stará, Irena G., Starý, Ivo, Kollárovič, Adrian, Luštinec, Daniel, Krausová, Zuzana, Šaman, David, Fiedler, Pavel

“…2‐Hydroxy‐ and 2,15‐dihydroxyhexahelicene were synthesised from simple benzene and naphthalene building blocks by intramolecular CoI‐ or Ni0‐catalysed [2+2+2]…”
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The synthesis of phosphonic acids derived from homocysteine via transesterification reactions by Pícha, Jan, Buděšínský, Miloš, Fiedler, Pavel, Jiráček, Jiří

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The quest for alternative routes to racemic and nonracemic azahelicene derivatives by Andronova, Angelina, Szydlo, Florence, Teplý, Filip, Tobrmanová, Miroslava, Volot, Amandine, Stará, Irena G., Starý, Ivo, Rulíšek, Lubomír, Šaman, David, Cvačka, Josef, Fiedler, Pavel, Vojtíšek, Pavel

“…A series of diverse aromatic azadienetriyne and azatriynes was synthesised. These compounds were subjected to transition metal-mediated [2+2+2]…”
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Conformation and Steric Effects in Mono- and Dimethoxybenzoic Acids by Exner, Otto, Fiedler, Pavel, Buděšínský, Miloš, Kulhánek, Jiří

“…The conformation of mono- and dimethoxybenzoic acids in solution was determined from their IR spectra and 13C and 1H NMR spectra. The main feature is a strong…”
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Rapid Access to Dibenzohelicenes and their Functionalized Derivatives by Jančařík, Andrej, Rybáček, Jiří, Cocq, Kevin, Vacek Chocholoušová, Jana, Vacek, Jaroslav, Pohl, Radek, Bednárová, Lucie, Fiedler, Pavel, Císařová, Ivana, Stará, Irena G., Starý, Ivo

“…Spiraling up: Easy access to dibenzo[5]‐, dibenzo[6]‐, and dibenzo[7]helicenes (see picture) as well as their functionalized derivatives includes Sonogashira…”
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[2+2+2] Cycloisomerisation of Aromatic Cyanodiynes in the Synthesis of Pyridohelicenes and Their Analogues by Klívar, Jiří, Jančařík, Andrej, Šaman, David, Pohl, Radek, Fiedler, Pavel, Bednárová, Lucie, Starý, Ivo, Stará, Irena G.

“…We have developed a methodology for the synthesis of pyridohelicenes and their analogues based on the Ni0‐, CoI‐ or RhI‐mediated intramolecular [2+2+2]…”
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Synthesis of Racemic, Diastereopure, and Enantiopure Carba- or Oxa[5]‑, [6]‑, [7]‑, and -[19]helicene (Di)thiol Derivatives by Nejedlý, Jindřich, Šámal, Michal, Rybáček, Jiří, Sánchez, Isabel Gay, Houska, Václav, Warzecha, Tomáš, Vacek, Jaroslav, Sieger, Ladislav, Buděšínský, Miloš, Bednárová, Lucie, Fiedler, Pavel, Císařová, Ivana, Starý, Ivo, Stará, Irena G

“…A series of carba- or oxa[5]-, [6]-, [7]-, and -[19]­helicene (di)­thiols was prepared. The Miyazaki–Newman–Kwart rearrangement of (dimethylcarbamothioyl)­oxy…”
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Synthesis of [alpha]-carboxyphosphinopeptides derived from norleucine by Pícha, Jan, Budsínský, Milos, Fiedler, Pavel, Sanda, Miloslav, Jirácek, Jirí

“…In the present study, we describe in detail the synthesis of a relatively rare class of phosphorus compounds, α-carboxyphosphinopeptides. We prepared several…”
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A convenient, high-yield synthesis of 1-substituted uracil and thymine derivatives by Rejman, Dominik, Kovačková, Soňa, Pohl, Radek, Dračínský, Martin, Fiedler, Pavel, Rosenberg, Ivan

“…Novel reagents for the synthesis of 1-substituted uracil and thymine derivatives have been developed. The aminolysis of 2- or 4-nitrophenyl…”
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A Ferrier-Type Allylic Rearrangement of 3′-Deoxy-3′,4′-didehydronucleosides Mediated by DMF Dimethyl Acetal: Direct Access to 4′-Alkoxy-2′,3′-didehydro-2′,3′-dideoxynucleosides by Petrová, Magdalena, Buděšínský, Miloš, Zborníková, Eva, Fiedler, Pavel, Rosenberg, Ivan

“…A straightforward synthesis of epimeric 4′-alkoxy-substituted 2′,3′-didehydro-2′,3′-dideoxynucleosides via a DMF dimethyl acetal mediated allylic rearrangement…”
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Synthesis of [5]-, [6]-, and [7]Helicene via Ni(0)- or Co(I)-Catalyzed Isomerization of Aromatic cis,cis-Dienetriynes by Teplý, Filip, Stará, Irena G, Starý, Ivo, Kollárovič, Adrian, Šaman, David, Rulíšek, Lubomír, Fiedler, Pavel

“…An original approach to helicene frameworks exploiting atom economic isomerization of appropriate energy-rich aromatic cis,cis-dienetriynes has been developed…”
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Synthesis of α-carboxyphosphinopeptides derived from norleucine by Pícha, Jan, Buděšínský, Miloš, Fiedler, Pavel, Šanda, Miloslav, Jiráček, Jiří

“…In the present study, we describe in detail the synthesis of a relatively rare class of phosphorus compounds, α-carboxyphosphinopeptides. We prepared several…”
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Efficient synthesis of phosphonodepsipeptides derived from norleucine by Pícha, Jan, Buděšínský, Miloš, Hančlová, Ivona, Šanda, Miloslav, Fiedler, Pavel, Vaněk, Václav, Jiráček, Jiří

“…In the present work, we describe in detail an efficient solution synthesis of norleucine-derived phosphonopeptides mimicking the peptide sequences Nle-Gly(Ala)…”
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Rapid Access to Dibenzohelicenes and their Functionalized Derivatives by Jančařík, Andrej, Rybáček, Jiří, Cocq, Kevin, Vacek Chocholoušová, Jana, Vacek, Jaroslav, Pohl, Radek, Bednárová, Lucie, Fiedler, Pavel, Císařová, Ivana, Stará, Irena G., Starý, Ivo

“……︁ 5,6,7 …︁: Über Sonogashira‐ und Suzuki‐Miyaura‐Kupplungen, Desilylierung und [2+2+2]‐Alkincycloisomerisierung sind Dibenzo[5]‐, Dibenzo[6]‐ und…”
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Transition metal control in the reaction of alkyne-substituted phenyl iodides with terminal alkynes: Sonogashira coupling vs cyclic carbopalladation by Teplý, Filip, Stará, Irena G., Starý, Ivo, Kollárovič, Adrian, Šaman, David, Fiedler, Pavel

“…Reaction between terminal alkynes and phenyl iodides bearing a tethered alkyne unit can be effectively controlled by the nature of a transition metal catalyst…”
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Nonsaponifiable lipid components of the pollen of elder (Sambucus nigra L.): Gas and liquid chromatography of non-saponifiable lipids. Part II by STRANSKY, Karel, VALTEROVA, Irena, FIEDLER, Pavel

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Nonsaponifiable lipid components of the pollen of elder ( Sambucus nigra L.) by Stránský, Karel, Valterová, Irena, Fiedler, Pavel

“…Pollen of the elder ( Sambucus nigra L.) was extracted with chloroform–methanol. The extract was separated by column chromatography into the following groups…”
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