About: Synthesis of deep.cavity thiacalix(4)arene

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A novel thiacalix[4]arene derivative bearing four phenyl groups on the upper rim was prepared by the direct condensation of biphenyl-4-ol with elemental sulphur. As revealed by X-ray diffraction analysis, this compound adopts the cone conformation in thesolid state, thus creating a cavity with an extended -aromatic system potentially applicable for solid-state inclusion of suitable molecules. Subsequent alkylation (RI/K2CO3/acetone, R=Me, Et, Pr) yielded tetraalkylated derivatives, which were studied f or their conformational preferences using 1H NMR spectroscopy. While the Me or Et derivatives are conformationally mobile and exhibit thermodynamic equilibria of several conformers in solution (CDCl3 or CD2Cl2), the corresponding propoxy derivative is infinitely stable at room temperature. A novel thiacalix[4]arene derivative bearing four phenyl groups on the upper rim was prepared by the direct condensation of biphenyl-4-ol with elemental sulphur. As revealed by X-ray diffraction analysis, this compound adopts the cone conformation in thesolid state, thus creating a cavity with an extended -aromatic system potentially applicable for solid-state inclusion of suitable molecules. Subsequent alkylation (RI/K2CO3/acetone, R=Me, Et, Pr) yielded tetraalkylated derivatives, which were studied f or their conformational preferences using 1H NMR spectroscopy. While the Me or Et derivatives are conformationally mobile and exhibit thermodynamic equilibria of several conformers in solution (CDCl3 or CD2Cl2), the corresponding propoxy derivative is infinitely stable at room temperature. (en)
Title	Synthesis of deep.cavity thiacalix(4)arene Synthesis of deep.cavity thiacalix(4)arene (en)
skos:prefLabel	Synthesis of deep.cavity thiacalix(4)arene Synthesis of deep.cavity thiacalix(4)arene (en)
skos:notation	RIV/60461373:22310/03:00007486!RIV/2004/MSM/223104/N
http://linked.open.../vavai/riv/strany	8093-8097
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM 223400008)
http://linked.open...iv/cisloPeriodika	44
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Petříčková, Hana Havlíček, Jaroslav Lhoták, Pavel Tkadlecová, Marcela Stibor, Ivan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Fakulta chemické technologie
http://linked.open...dnocenehoVysledku	630044
http://linked.open...ai/riv/idVysledku	RIV/60461373:22310/03:00007486
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Thiacalixarenes; X-ray crystallography; alkylation; conformational analysis (en)
http://linked.open.../riv/klicoveSlovo	X-ray crystallography conformational analysis alkylation Thiacalixarenes
http://linked.open...odStatuVydavatele	BE - Belgické království
http://linked.open...ontrolniKodProRIV	[FAE70DFA6741]
http://linked.open...i/riv/nazevZdroje	Tetrahedron Letters
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...UplatneniVysledku	2003
http://linked.open...v/svazekPeriodika	44
http://linked.open...iv/tvurceVysledku	Havlíček, Jaroslav Tkadlecová, Marcela Lhoták, Pavel Stibor, Ivan Petříčková, Hana Šmejkal, T.
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20223400008
issn	0040-4039
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	22310

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