About: Sonocatalysis and zeolites: An efficient route to prepare N-alkylimidazoles Kinetic aspects

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Práce se zabývá syntézou N-substituovaných imidazolů alkylací imidazolu 1-brombutanem za použití sonochemické a termické aktivace. Reakce byly katalyzované zeolity H-ZSM-5, Mordenit, H-Beta a H-Y. Zkoumám byl vliv kyselosti a struktury zeolitů na aktivitu a selektivitu alkylace imidazolu v kapalné fázi. N-alkylimidazoly představují důležité meziprodukty pro syntézu farmak s protivirovými vlastnostmi. V přítomnosti Mordenitu a NH4Y zeolitu byly N-alkylimidazoly získány ve vysokých výtěžcích (>80%) jako hlavní produkt (selektivita 100%) při mírných reakčních podmínkách, ultrazvukové aktivaci při 333 K během 1 h. (cs) The synthesis of N-substituted imidazoles via alkylation of imidazole with 1-bromobutane using sonochemical and thermal activations over zeolites (H-ZSM-5, Mordenite, H-Beta and H-Y) is reported. The effect of the acidity and channel size of zeolites on the activity and selectivity of imidazole alkylation was investigated in a liquid phase. The N-alkylimidazoles are important intermediates in the synthesis of pharmaceuticals with antiviral properties. N-alkylimidazoles were obtained in high yields (>80%) as main product (100% selectivity) under mild conditions, ultrasound (US) activation at 333 K in only 1 h, when Mordenite and NH4Y zeolites were used as catalysts. The synthesis of N-substituted imidazoles via alkylation of imidazole with 1-bromobutane using sonochemical and thermal activations over zeolites (H-ZSM-5, Mordenite, H-Beta and H-Y) is reported. The effect of the acidity and channel size of zeolites on the activity and selectivity of imidazole alkylation was investigated in a liquid phase. The N-alkylimidazoles are important intermediates in the synthesis of pharmaceuticals with antiviral properties. N-alkylimidazoles were obtained in high yields (>80%) as main product (100% selectivity) under mild conditions, ultrasound (US) activation at 333 K in only 1 h, when Mordenite and NH4Y zeolites were used as catalysts. (en)
Title	Sonocatalysis and zeolites: An efficient route to prepare N-alkylimidazoles Kinetic aspects Sonokatalýza a zeolity: vhodný postup pro přípravu N-alkylimidazolů (cs) Sonocatalysis and zeolites: An efficient route to prepare N-alkylimidazoles Kinetic aspects (en)
skos:prefLabel	Sonocatalysis and zeolites: An efficient route to prepare N-alkylimidazoles Kinetic aspects Sonokatalýza a zeolity: vhodný postup pro přípravu N-alkylimidazolů (cs) Sonocatalysis and zeolites: An efficient route to prepare N-alkylimidazoles Kinetic aspects (en)
skos:notation	RIV/61388955:_____/08:00309860!RIV09-AV0-61388955
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1QS400400560), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	1-2
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Bejblová, Martina Čejka, Jiří
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	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	395949
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/08:00309860
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	N-alkylimidazoles; sonocatalysis; green chmistry (en)
http://linked.open.../riv/klicoveSlovo	N-alkylimidazoles green chmistry sonocatalysis
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[ECFBBF7E6175]
http://linked.open...i/riv/nazevZdroje	Applied Catalysis A - General
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Joint laboratory of ÚFCH JH and VÚANCH for development of catalytic processes
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	338
http://linked.open...iv/tvurceVysledku	Čejka, Jiří Bejblová, Martina López-Peinado, A. J. Martín-Aranda, R. M. Calvino-Casilda, V.
http://linked.open...ain/vavai/riv/wos	000254905200018
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	0926-860X
number of pages	6 (xsd:int)

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