About: Henry reaction catalyzed by recoverable enantioselective catalysts based on copper(II) complexes of alfa-methoxypoly (ethylene glycol)-b-poly(L-glutamic acid) and imidazolidine-4-one ligands

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About: Henry reaction catalyzed by recoverable enantioselective catalysts based on copper(II) complexes of alfa-methoxypoly (ethylene glycol)-b-poly(L-glutamic acid) and imidazolidine-4-one ligands Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Herein we describe the preparation and characterization of a recoverable catalyst for a Henry reaction based on a Cu(II) complex of block copolymer a-methoxypoly(ethylene glycol)-b-poly(L-glutamic acid) with (2R,5S)- or (2S,5R)-5-isopropyl-5-methyl-2-(pyridine-2-yl)imidazolidine-4-one. The reactions of substituted aldehydes with nitromethane catalyzed by these catalysts proceed with high chemical yield (70-98%) and with high enantioselectivity (61-92% ee). The reaction mixture is in the form of a colloid system and is formed by self-organized aggregates of the catalysts with average hydrodynamic particle size of 189 +- 3 nm (DLS). After sevenfold recycling, the catalyst exhibited no decrease in the enantioselectivity and only a slight decrease (ca. 18%) in the yield for the Henry reaction of nitromethane with 2-methoxybenzaldehyde. Herein we describe the preparation and characterization of a recoverable catalyst for a Henry reaction based on a Cu(II) complex of block copolymer a-methoxypoly(ethylene glycol)-b-poly(L-glutamic acid) with (2R,5S)- or (2S,5R)-5-isopropyl-5-methyl-2-(pyridine-2-yl)imidazolidine-4-one. The reactions of substituted aldehydes with nitromethane catalyzed by these catalysts proceed with high chemical yield (70-98%) and with high enantioselectivity (61-92% ee). The reaction mixture is in the form of a colloid system and is formed by self-organized aggregates of the catalysts with average hydrodynamic particle size of 189 +- 3 nm (DLS). After sevenfold recycling, the catalyst exhibited no decrease in the enantioselectivity and only a slight decrease (ca. 18%) in the yield for the Henry reaction of nitromethane with 2-methoxybenzaldehyde. (en)
Title	Henry reaction catalyzed by recoverable enantioselective catalysts based on copper(II) complexes of alfa-methoxypoly (ethylene glycol)-b-poly(L-glutamic acid) and imidazolidine-4-one ligands Henry reaction catalyzed by recoverable enantioselective catalysts based on copper(II) complexes of alfa-methoxypoly (ethylene glycol)-b-poly(L-glutamic acid) and imidazolidine-4-one ligands (en)
skos:prefLabel	Henry reaction catalyzed by recoverable enantioselective catalysts based on copper(II) complexes of alfa-methoxypoly (ethylene glycol)-b-poly(L-glutamic acid) and imidazolidine-4-one ligands Henry reaction catalyzed by recoverable enantioselective catalysts based on copper(II) complexes of alfa-methoxypoly (ethylene glycol)-b-poly(L-glutamic acid) and imidazolidine-4-one ligands (en)
skos:notation	RIV/00216275:25310/14:39897719!RIV15-MSM-25310___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GAP106/11/0058), S
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Palarčík, Jiří Sedlák, Miloš Drabina, Pavel Hanusek, Jiří Bhosale, Dattatry
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	Univerzita Pardubice / Fakulta chemicko-technologická
http://linked.open...dnocenehoVysledku	18938
http://linked.open...ai/riv/idVysledku	RIV/00216275:25310/14:39897719
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	imidazolidine-4-one; alfa-methoxypoly (ethylene glycol)-b-poly(L-glutamic acid); complex; recoverable catalyst; Henry reaction (en)
http://linked.open.../riv/klicoveSlovo	alfa-methoxypoly (ethylene glycol)-b-poly(L-glutamic acid) imidazolidine-4-one recoverable catalyst Henry reaction complex
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[99223B1058AD]
http://linked.open...i/riv/nazevZdroje	Tetrahedron Asymmetry
http://linked.open...in/vavai/riv/obor	CC
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Phosgene Derivatives for Nanotechnologies
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	25
http://linked.open...iv/tvurceVysledku	Palarčík, Jiří Drabina, Pavel Sedlák, Miloš Hanusek, Jiří Bhosale, Dattatry
http://linked.open...ain/vavai/riv/wos	000333791800007
issn	0957-4166
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.tetasy.2014.01.001
http://localhost/t...ganizacniJednotka	25310

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