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Titolo:
Enantioselective copper-catalyzed allylic alkylation with dialkylzincs using phosphoramidite ligands
Autore:
Malda, H; van Zijl, AW; Arnold, LA; Feringa, BL;
Indirizzi:
Univ Groningen, Stratingh Inst, Dept Organ & Mol Inorgan Chem, NL-9747 AG Groningen, Netherlands Univ Groningen Groningen Netherlands NL-9747 AG G Groningen, Netherlands
Titolo Testata:
ORGANIC LETTERS
fascicolo: 8, volume: 3, anno: 2001,
pagine: 1169 - 1171
SICI:
1523-7060(20010419)3:8<1169:ECAAWD>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
ASYMMETRIC CONJUGATE ADDITION; GRIGNARD-REAGENTS; REGIOCONTROL; SUBSTITUTION; COMPLEXES; CHLORIDES; ACETATES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Feringa, BL Univ Groningen, Stratingh Inst, Dept Organ & Mol Inorgan Chem,Nijenborgh 4, NL-9747 AG Groningen, Netherlands Univ Groningen Nijenborgh 4 Groningen Netherlands NL-9747 AG
Citazione:
H. Malda et al., "Enantioselective copper-catalyzed allylic alkylation with dialkylzincs using phosphoramidite ligands", ORG LETT, 3(8), 2001, pp. 1169-1171

Abstract

[GRAPHICS]In the presence of a catalytic amount of copper salts, cinnamyl halides undergo a regio- and enantioselective S(N)2' alkylation with dialkylzincs using chiral phosphoramidites as ligands. An S(N)2':S(N)2 ratio of 85:15 and enantiomeric excesses up to 77% for the chiral S(N)2' products are found, Variation of solvent and reaction temperature revealed that the highest regio- and enantioselectivities are found using coordinating solvents of -40 degreesC.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 12:42:49