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Titolo:
Arene ruthenium complexes with pyridyloxazolines: synthesis and applications as asymmetric catalysts for Diels-Alder reactions
Autore:
Davenport, AJ; Davies, DL; Fawcett, J; Garratt, SA; Russell, DR;
Indirizzi:
Univ Leicester, Dept Chem, Leicester LE1 7RH, Leics, England Univ Leicester Leicester Leics England LE1 7RH er LE1 7RH, Leics, England
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
fascicolo: 23, , anno: 2000,
pagine: 4432 - 4441
SICI:
1472-7773(2000):23<4432:ARCWPS>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSITION-METAL COMPLEXES; CHLORIDE SUBSTITUTION-REACTIONS; CYCLORUTHENATED (R)(C)-(+)-N,N-DIMETHYL-ALPHA-(2-NAPHTHYL) ETHYLAMINE; HALF-SANDWICH COMPLEXES; SCHIFF-BASE COMPLEXES; X-RAY STRUCTURE; CRYSTAL-STRUCTURES; LEWIS-ACID; ETA-6-ARENE-RUTHENIUM(II) COMPLEXES; AMINO-ACIDS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
56
Recensione:
Indirizzi per estratti:
Indirizzo: Davies, DL Univ Leicester, Dept Chem, Leicester LE1 7RH, Leics, England Univ Leicester Leicester Leics England LE1 7RH Leics, England
Citazione:
A.J. Davenport et al., "Arene ruthenium complexes with pyridyloxazolines: synthesis and applications as asymmetric catalysts for Diels-Alder reactions", J CHEM S DA, (23), 2000, pp. 4432-4441

Abstract

Reaction of the dimers [RuCl2(arene)](2) with pyridyloxazolines (pymox) gave complexes [RuCl(pymox)(arene)][SbF6] 1-12 which have been fully characterised. Using chiral ligands diastereomers are formed, the diastereoselectivity depending on the substituents on the arene and on the oxazoline. The complexes [RuCl(Me-2-pymox)(mes)][SbF6] 1, [RuCl(Ph-pymox)(mes)][SbF6] 3, [RuCl(Pr-i-pymox)(mes)][SbF6] 5 and [RuCl(indanyl-pymox)(mes)][SbF6] 12 (mes=mesitylene) have been characterised by X-ray crystallography. Treatment of these cations with AgSbF6 generates dications which in some cases can be isolated as aqua species [Ru(OH2)(pymox)(arene)](2+); these dications are enantioselective catalysts for Diels-Alder reactions of acroleins and dienes; amechanism is proposed which accounts for the observed enantioselectivity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 02:38:42