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Titolo:
RHODIUM CATIONIC COMPLEXES USING DITHIOETHERS AS CHIRAL LIGANDS - APPLICATION IN STYRENE HYDROFORMYLATION
Autore:
OREJON A; MASDEUBULTO AM; ECHARRI R; DIEGUEZ M; FORNIESCAMER J; CLAVER C; CARDIN CJ;
Indirizzi:
UNIV ROVIRA & VIRGILI,DEPT QUIM FIS & INORGAN,PL IMPERIAL TARRACO 1 TARRAGONA 43005 SPAIN UNIV ROVIRA & VIRGILI,DEPT QUIM FIS & INORGAN TARRAGONA 43005 SPAIN UNIV ABDELMALEK ESSAADI,DEPT CHIM TETOUAN MEXICO UNIV READING,DEPT CHEM READING RG6 6AD BERKS ENGLAND
Titolo Testata:
Journal of organometallic chemistry
fascicolo: 1-2, volume: 559, anno: 1998,
pagine: 23 - 29
SICI:
0022-328X(1998)559:1-2<23:RCCUDA>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
ASYMMETRIC HYDROFORMYLATION; IRIDIUM(I) COMPLEXES; METAL-COMPLEXES; SULFUR DONORS; CATALYSTS; CRYSTAL;
Keywords:
RHODIUM; DITHIOETHER; HYDROFORMYLATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
A. Orejon et al., "RHODIUM CATIONIC COMPLEXES USING DITHIOETHERS AS CHIRAL LIGANDS - APPLICATION IN STYRENE HYDROFORMYLATION", Journal of organometallic chemistry, 559(1-2), 1998, pp. 23-29

Abstract

Addition of the dithioethers (-)-DIOSR2 (R = Me, Pr-i) (2,3-O-isopropylidene-1,4-dimethyl (and diisopropyl) thioether-L-threitol) to a dichloromethane solution of [Rh(COD)(2)]ClO4, (COD = 1,5-cyclooctadiene) yielded the mononuclear complexes [Rh(COD)(DIOSR2)]ClO4. X-ray diffraction methods showed that the [Rh(COD)((DIOSPr2)-Pr-i)]ClO4 complex had an square-planar coordination geometry at the rhodium atom with the Pr-i groups in anti position. Cyclooctadiene complexes react with carbonmonoxide to form dinuclear tetracarbonylated complexes [(CO)(2)Rh(mu-DIOSR2)(2)(CO)(2)](ClO4)(2). [Rh(COD)(DIOSR2)]ClO4 are active catalystprecursors in styrene hydroformylation at 30 atm and 65 degrees C which give conversions of up to 99% with a regioselectivity in 2-phenylpropanal as high as 74%. In all cases enantioselectivities are low. (C) 1998 Elsevier Science S.A. All rights reserved.

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Documento generato il 29/11/20 alle ore 03:15:19