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Titolo:
Asymmetric epoxidation of alpha,beta-unsaturated ketones catalyzed by chiral ytterbium complexes
Autore:
Chen, RF; Qian, CT; de Vries, JG;
Indirizzi:
Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organomet Chem, Shanghai 200032, Peoples R China Chinese Acad Sci Shanghai Peoples R China 200032 200032, Peoples R China Dsm Res & Patents, Dept LS2CC, NL-6160 MD Geleen, Netherlands Dsm Res & Patents Geleen Netherlands NL-6160 MD 0 MD Geleen, Netherlands
Titolo Testata:
TETRAHEDRON LETTERS
fascicolo: 39, volume: 42, anno: 2001,
pagine: 6919 - 6921
SICI:
0040-4039(20010924)42:39<6919:AEOAKC>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENANTIOSELECTIVITY; ALDEHYDES; ENONES; BINOL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Qian, CT Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organomet Chem, 354 Fenglin Lu, Shanghai 200032, Peoples R China Chinese Acad Sci 354 Fenglin Lu Shanghai Peoples R China 200032
Citazione:
R.F. Chen et al., "Asymmetric epoxidation of alpha,beta-unsaturated ketones catalyzed by chiral ytterbium complexes", TETRAHEDR L, 42(39), 2001, pp. 6919-6921

Abstract

Several derivatives of (S)-(-)-BINOL ligands with 6,6 ' -substitutents were synthesized and applied as chiral ligands in the Yb(O-i-Pr)(3)-catalyzed asymmetric epoxidation of alpha,beta -unsaturated ketones. Superior resultswere obtained with 6,6 ' -diphenyl-BINOL, exemplified in the asymmetric epoxidation of (E)-1,3-diphenylprop-2-en-1-one in 91% yield and up to 97% ee. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 16:34:39