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Titolo:
Asymmetric protonation of lithium enolate of alpha-amino acid derivatives using chiral Bronsted acids
Autore:
Yanagisawa, A; Matsuzaki, Y; Yamamoto, H;
Indirizzi:
Nagoya Univ, CREST, Japan Sci & Technol Corp, Grad Sch Engn,Chikusa Ku, Nagoya, Aichi 4648603, Japan Nagoya Univ Nagoya Aichi Japan 4648603 a Ku, Nagoya, Aichi 4648603, Japan Chiba Univ, Fac Sci, Dept Chem, Chiba 2638522, Japan Chiba Univ Chiba Japan 2638522 Fac Sci, Dept Chem, Chiba 2638522, Japan
Titolo Testata:
SYNLETT
fascicolo: 12, , anno: 2001,
pagine: 1855 - 1858
SICI:
0936-5214(200112):12<1855:APOLEO>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
CATALYTIC ENANTIOSELECTIVE PROTONATION; ENANTIOMERIC ENRICHMENT; LIGAND; IMIDE; DERACEMIZATION; ACETALS; CARBON; ESTERS; ETHERS; SCOPE;
Keywords:
enantioselective protonation; lithium enolate; alpha-amino acid derivative; chiral alcohols; 2-oxazoline; asymmetric catalysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Yamamoto, H Nagoya Univ, CREST, Japan Sci & Technol Corp, Grad Sch Engn,Chikusa Ku, Nagoya, Aichi 4648603, Japan Nagoya Univ Nagoya Aichi Japan 4648603 , Aichi 4648603, Japan
Citazione:
A. Yanagisawa et al., "Asymmetric protonation of lithium enolate of alpha-amino acid derivatives using chiral Bronsted acids", SYNLETT, (12), 2001, pp. 1855-1858

Abstract

Chiral alcohols possessing an asymmetric 2-oxazoline ring were synthesizedas new chiral Bronsted acids from tetrahydro-2-furoic acid and (IS, 2R)-2-amino-1,2-diphenylethanol. These alcohols were superior to (S,S)- or (R,R)-imide reported previously as a chiral proton source for enantioselective protonation of lithium enolate of,in alanine derivative.

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Documento generato il 20/09/20 alle ore 01:04:05