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Titolo:
Effect of ligands on the divalent palladium-catalyzed carbon-carbon coupling reactions. Highly enantioselective synthesis of optically active gamma-butyrolactones
Autore:
Lu, XY; Zhang, QH;
Indirizzi:
Chinese Acad Sci, Shanghai Inst Organ Chem, Organomet Chem Lab, Shanghai 200032, Peoples R China Chinese Acad Sci Shanghai Peoples R China 200032 200032, Peoples R China
Titolo Testata:
PURE AND APPLIED CHEMISTRY
fascicolo: 2, volume: 73, anno: 2001,
pagine: 247 - 250
SICI:
0033-4545(200102)73:2<247:EOLOTD>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
STREPTOMYCIN BIOSYNTHESIS; STEREOSELECTIVE SYNTHESIS; MICROBIAL CHEMISTRY; A-FACTOR; DERIVATIVES; METHODOLOGY; COMPLEXES; INDUCER; ACID;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Lu, XY Chinese Acad Sci, Shanghai Inst Organ Chem, Organomet Chem Lab, 354Fenglin Lu, Shanghai 200032, Peoples R China Chinese Acad Sci 354 Fenglin Lu Shanghai Peoples R China 200032 na
Citazione:
X.Y. Lu e Q.H. Zhang, "Effect of ligands on the divalent palladium-catalyzed carbon-carbon coupling reactions. Highly enantioselective synthesis of optically active gamma-butyrolactones", PUR A CHEM, 73(2), 2001, pp. 247-250

Abstract

In the palladium(II)-catalyzed enyne coupling reactions, the nitrogen-containing ligand plays the same role as the halide ion to inhibit the beta -hydride elimination. Employing the pymox or bisoxazoline as ligands, the catalytic asymmetric cyclization of (Z)-4'-acetoxy-2'-butenyl 2-alkynoates initiated by acetoxypalladation was established with high efficiency (up to 92%ee) to afford the optically active gamma -butyrolactones.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 09:47:39