About: Uncommon Regioselectivity in Thiacalix[4]arene Formylation

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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	To reveal the alternative ways for upper-rim thiacalixarene derivatization, the formylation reactions (Gross and/or Duff conditions) of the corresponding tetrapropoxythiacalix[4]arene immobilized in the 1,3-alternate conformation were systematically studied. Surprisingly, albeit using excess of the formylation agent, only two formyl groups were introduced exclusively into the meta positions of thiacalixarene skeleton. Unexpected regioselectivity of these reactions opens the door for unique substitution pattern in thiacalixarene chemistry. The formation of meta-substituted aldehydes is another illustration showing remarkably different reactivity of thiacalix[4]arene system compared with a classical calix[4]arene analogue. To reveal the alternative ways for upper-rim thiacalixarene derivatization, the formylation reactions (Gross and/or Duff conditions) of the corresponding tetrapropoxythiacalix[4]arene immobilized in the 1,3-alternate conformation were systematically studied. Surprisingly, albeit using excess of the formylation agent, only two formyl groups were introduced exclusively into the meta positions of thiacalixarene skeleton. Unexpected regioselectivity of these reactions opens the door for unique substitution pattern in thiacalixarene chemistry. The formation of meta-substituted aldehydes is another illustration showing remarkably different reactivity of thiacalix[4]arene system compared with a classical calix[4]arene analogue. (en)
Title	Uncommon Regioselectivity in Thiacalix[4]arene Formylation Uncommon Regioselectivity in Thiacalix[4]arene Formylation (en)
skos:prefLabel	Uncommon Regioselectivity in Thiacalix[4]arene Formylation Uncommon Regioselectivity in Thiacalix[4]arene Formylation (en)
skos:notation	RIV/60461373:22310/09:00022161!RIV10-MSM-22310___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA104/07/1242), P(GA203/09/0691), P(IAAX08240901), P(LC06070), Z(MSM6046137301)
http://linked.open...iv/cisloPeriodika	12
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Böhm, Stanislav Pojarová, Michaela Lhoták, Pavel
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	347563
http://linked.open...ai/riv/idVysledku	RIV/60461373:22310/09:00022161
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	calixarene; formylation; regioselectivity; electrophilic substitution; synthesis (en)
http://linked.open.../riv/klicoveSlovo	calixarene regioselectivity synthesis formylation electrophilic substitution
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[1533F271329A]
http://linked.open...i/riv/nazevZdroje	Journal of Organic Chemistry
http://linked.open...in/vavai/riv/obor	CC
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Calixarene-porphyrin conjugates for selective complexation and separation of fullerenes Novel inorganic-organic hybrid nanomaterials The structure and synthetic applications of transition metal complexes Extraction ability and radiation stability of thiaxalixarene derivatives
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	74
http://linked.open...iv/tvurceVysledku	Böhm, Stanislav Císařová, Ivana Pojarová, Michaela Kundrát, Ondřej Lhoták, Pavel
http://linked.open...ain/vavai/riv/wos	000266969800020
http://linked.open...n/vavai/riv/zamer	Catalytic processes in chemistry and chemical technology
issn	0022-3263
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	22310

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