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Titolo:
Chiral phosphinopyrrolyl-oxazolines: A new class of easily prepared, modular P,N-ligands
Autore:
Cozzi, PG; Zimmermann, N; Hilgraf, R; Schaffner, S; Pfaltz, A;
Indirizzi:
Univ Bologna, Dipartimento Chim G Ciamician, I-40126 Bologna, Italy Univ Bologna Bologna Italy I-40126 m G Ciamician, I-40126 Bologna, Italy Univ Basel, Dept Chem, CH-4056 Basel, Switzerland Univ Basel Basel Switzerland CH-4056 pt Chem, CH-4056 Basel, Switzerland
Titolo Testata:
ADVANCED SYNTHESIS & CATALYSIS
fascicolo: 5, volume: 343, anno: 2001,
pagine: 450 - 454
SICI:
1615-4150(200107)343:5<450:CPANCO>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
CATALYZED ALLYLIC SUBSTITUTION; N-PYRROLYL PHOSPHINES; PI-ACCEPTOR CHARACTER; ENANTIOSELECTIVE HYDROGENATION; ASYMMETRIC CATALYSIS; LIGAND SUBSTITUTION; OLEFINS; COMPLEXES; SYSTEM;
Keywords:
asymmetric catalysis; allylation; hydrogenation; iridium; palladium; phosphinooxazolines;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Cozzi, PG Univ Bologna, Dipartimento Chim G Ciamician, Via Selmi 2, I-40126 Bologna,Italy Univ Bologna Via Selmi 2 Bologna Italy I-40126 26 Bologna,Italy
Citazione:
P.G. Cozzi et al., "Chiral phosphinopyrrolyl-oxazolines: A new class of easily prepared, modular P,N-ligands", ADV SYNTH C, 343(5), 2001, pp. 450-454

Abstract

Chiral 2-(N-phosphinopyrrol-2-yl)oxazolines (PyrPHOX ligands) are readily prepared from 2-cyanopyrrole by condensation with a chiral amino alcohol and subsequent reaction with dialkyl- or diaryl-chlorophosphines. Iridium complexes of these ligands proved to be highly efficient catalysts for the enantioselective hydrogenation of olefins. With unfunctionalized arylalkenes and ethyl cinnamate enantiomeric excesses of 70-99% were obtained.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 00:27:57