About: Enantioselective [2+2+2] cycloisomerisation of alkynes in the synthesis of helicenes: The search for effective chiral ligands

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://cccc.uochb.cas.cz/76/12/2005/
Description	The enantioselective [2+2+2] cycloisomerisation of the aromatic triynes under nickel(0) catalysis to afford nonracemic [6]- and [7]helicene derivatives has been systematically studied. A collection of mono- and bidentate phosphines, phosphites, phosphinites and phosphinous amides possessing stereogenic units such as chiral centre, axis or plane (or their combinations) has been tested and axially chiral binaphthyl-derived monodentate MOP-type phosphine ligands were the optimal class of ligands. Nickel complexes of these ligands afforded nonracemic tetrahydro[6]helicene in up to 64% ee in a model reaction. The enantioselective [2+2+2] cycloisomerisation of the aromatic triynes under nickel(0) catalysis to afford nonracemic [6]- and [7]helicene derivatives has been systematically studied. A collection of mono- and bidentate phosphines, phosphites, phosphinites and phosphinous amides possessing stereogenic units such as chiral centre, axis or plane (or their combinations) has been tested and axially chiral binaphthyl-derived monodentate MOP-type phosphine ligands were the optimal class of ligands. Nickel complexes of these ligands afforded nonracemic tetrahydro[6]helicene in up to 64% ee in a model reaction. (en)
Title	Enantioselective [2+2+2] cycloisomerisation of alkynes in the synthesis of helicenes: The search for effective chiral ligands Enantioselective [2+2+2] cycloisomerisation of alkynes in the synthesis of helicenes: The search for effective chiral ligands (en)
skos:prefLabel	Enantioselective [2+2+2] cycloisomerisation of alkynes in the synthesis of helicenes: The search for effective chiral ligands Enantioselective [2+2+2] cycloisomerisation of alkynes in the synthesis of helicenes: The search for effective chiral ligands (en)
skos:notation	RIV/00216208:11310/11:10132968!RIV13-MSM-11310___
http://linked.open...avai/predkladatel	Přírodovědecká fakulta
http://linked.open...avai/riv/aktivita	I P Z
http://linked.open...avai/riv/aktivity	I, P(GA203/09/1766), P(LC512), Z(AV0Z40550506)
http://linked.open...iv/cisloPeriodika	12
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Vyskočil, Stěpán
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 Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	197434
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/11:10132968
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Asymmetric catalysis.; Chirality; Enantioselectivity; Phosphorus ligands; Nickel catalysis; Cycloisomerisation; Alkynes; Helicenes (en)
http://linked.open.../riv/klicoveSlovo	Alkynes Asymmetric catalysis. Chirality Cycloisomerisation Enantioselectivity Helicenes Nickel catalysis Phosphorus ligands
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[F2486E07E938]
http://linked.open...i/riv/nazevZdroje	Collection of Czechoslovak Chemical Communications
http://linked.open...in/vavai/riv/obor	CC
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	Exploring Helically Chiral Ligands in Enantioselective Transition Metal Catalysis Center for biomolecules and complex molecular systems
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	76
http://linked.open...iv/tvurceVysledku	Andronova, Angelina Guiry, Patrick J. Jugé, Sylvain Kollárovič, Adrian Llooyd=Jones, Guy C. Stará, Irena G. Starý, Ivo Vyskočil, Stěpán
http://linked.open...ain/vavai/riv/wos	000299816100038
http://linked.open...n/vavai/riv/zamer	Regulace biologických procesů: Chemické modulátory vybraných systémů významných pro medicínu a zemědělství
issn	0010-0765
number of pages	19 (xsd:int)
http://bibframe.org/vocab/doi	10.1135/cccc2011177
http://localhost/t...ganizacniJednotka	11310
is http://linked.open...avai/riv/vysledek of	Enantioselective [2+2+2] cycloisomerisation of alkynes in the synthesis of helicenes: The search for effective chiral ligands

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