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Titolo:
Binuclear and polynuclear rhodium complexes containing chiral dithiolate ligands derived from lactic acid
Autore:
Freixa, Z; Martin, E; Gladiali, S; Bayon, JC;
Indirizzi:
Univ Autonoma Barcelona, Dept Quim, E-08193 Barcelona, Spain Univ AutonomaBarcelona Barcelona Spain E-08193 E-08193 Barcelona, Spain Univ Sassari, Dipartimento Chim, I-07100 Sassari, Italy Univ Sassari Sassari Italy I-07100 rtimento Chim, I-07100 Sassari, Italy
Titolo Testata:
APPLIED ORGANOMETALLIC CHEMISTRY
fascicolo: 1, volume: 14, anno: 2000,
pagine: 57 - 65
SICI:
0268-2605(200001)14:1<57:BAPRCC>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
CATALYST PRECURSORS; HYDROFORMYLATION; ALKENES;
Keywords:
rhodium; polynuclear, hydroformylation; asymmetric catalysis; enantioselective; thiolate; chiral; dithiolate; sulfur ligands;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Bayon, JC Univ Autonoma Barcelona, Dept Quim, E-08193 Barcelona, Spain Univ Autonoma Barcelona Barcelona Spain E-08193 rcelona, Spain
Citazione:
Z. Freixa et al., "Binuclear and polynuclear rhodium complexes containing chiral dithiolate ligands derived from lactic acid", APPL ORGAN, 14(1), 2000, pp. 57-65

Abstract

Two precursors of the chiral dithiolato ligands, di-[(2R)-acetylmercaptopropyl] phthalate and isophthalate, 1 and 2 respectively, were synthesized from (S)-lactic acid. Reactions of 1 and 2 with [Rh-2(mu)-OMe)(2)(cod)(2)] (cod = 1,5-cyclo-octtadiene) yielded rhodium thiolato complexes of different nuclearities. The mixtures of complexes were analyzed by gel-permeation chromatography (GPC). The reaction with ligand 1 produced a mixture of oligomeric complexes, where the binuclear species was the main component. Higher-nuclearity complexes were the main products of the reaction with ligand 2, The rhodium complexes, in the presence of PPh3, were tested as catalyst precursors for the asymmetric hydroformylation of styrene, Moderate activity and regioselectivity were achieved in most cases, but no enantioselective discrimination was observed, Copyright (C) 2000 John Wiley & Sons, Ltd.

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Documento generato il 05/12/20 alle ore 10:37:29