Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Chiral proline-derivative anchored on mesoporous silicas and their application to the asymmetric diethylzinc addition to benzaldehyde
Autore:
Kim, SW; Bae, SJ; Hyeon, T; Kim, BM;
Indirizzi:
Seoul Natl Univ, Sch Chem Engn, Seoul 151742, South Korea Seoul Natl UnivSeoul South Korea 151742 Engn, Seoul 151742, South Korea Seoul Natl Univ, Inst Chem Proc, Seoul 151742, South Korea Seoul Natl Univ Seoul South Korea 151742 Proc, Seoul 151742, South Korea Seoul Natl Univ, Dept Chem, Seoul 151742, South Korea Seoul Natl Univ Seoul South Korea 151742 Chem, Seoul 151742, South Korea Seoul Natl Univ, Ctr Mol Catalysis, Seoul 151742, South Korea Seoul Natl Univ Seoul South Korea 151742 ysis, Seoul 151742, South Korea
Titolo Testata:
MICROPOROUS AND MESOPOROUS MATERIALS
, volume: 44, anno: 2001,
pagine: 523 - 529
SICI:
1387-1811(200106)44:<523:CPAOMS>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENANTIOSELECTIVE ADDITION; MOLECULAR-SIEVES; CATALYSTS; MCM-41; EPOXIDATION; COMPLEXES; ALDEHYDES; REAGENTS;
Keywords:
asymmetric; diethylzinc; mesoporous; heterogeneous; enantioselectivity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Hyeon, T Seoul Natl Univ, Sch Chem Engn, Seoul 151742, South Korea Seoul Natl Univ Seoul South Korea 151742 ul 151742, South Korea
Citazione:
S.W. Kim et al., "Chiral proline-derivative anchored on mesoporous silicas and their application to the asymmetric diethylzinc addition to benzaldehyde", MICROP M M, 44, 2001, pp. 523-529

Abstract

We developed new heterogeneous catalysts employing a proline-derived ligand immobilized on mesoporous silicas (MCM-41 and SBA-15) and they were applied to asymmetric diethylzinc addition to benzaldehyde. The reaction enantioselectivity was found to be largely dependent upon the pore size of the mesoporous silicas, capping of free silanol moiety with trimethylsilyl (TMS) group and employment of n-BuLi. High enantioselectivity (75% e.e.) was achieved when both TMS capping and n-BuLi addition were applied for the large pore-sized SBA-15 based catalyst. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 12:25:56