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Titolo:
Facile oxidation of fused 1,4-dimethoxybenzenes to 1,4-quinones using NBS:Fine-tuned control over bromination and oxidation reactions
Autore:
Kim, DW; Choi, HY; Lee, KJ; Chi, DY;
Indirizzi:
Inha Univ, Dept Chem, Inchon 402751, South Korea Inha Univ Inchon South Korea 402751 ept Chem, Inchon 402751, South Korea Hanyang Univ, Div Chem Engn & Ind Chem, Seoul 133791, South Korea Hanyang Univ Seoul South Korea 133791 nd Chem, Seoul 133791, South Korea
Titolo Testata:
ORGANIC LETTERS
fascicolo: 3, volume: 3, anno: 2001,
pagine: 445 - 447
SICI:
1523-7060(20010208)3:3<445:FOOF1T>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
AMMONIUM-NITRATE; STREPTONIGRIN; LAVENDAMYCIN; ANALOGS; DEMETHYLATION; QUINONES; ETHERS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Chi, DY Inha Univ, Dept Chem, 253 Yonghyundong Namgu, Inchon 402751, SouthKorea Inha Univ 253 Yonghyundong Namgu Inchon South Korea 402751 Korea
Citazione:
D.W. Kim et al., "Facile oxidation of fused 1,4-dimethoxybenzenes to 1,4-quinones using NBS:Fine-tuned control over bromination and oxidation reactions", ORG LETT, 3(3), 2001, pp. 445-447

Abstract

[GRAPHICS]Fused 1,4-dimethoxybenzenes could be oxidized to benzoquinones by either direct oxidation or demethylation-oxidation. The oxidative demethylation of 5,8-dimethoxy-2-methylquinoline using 1.1 equiv of NBS in aqueous THF and acatalytic amount of H2SO4 at 20 degreesC for 5 min gave 2-methylquinoline-5,8-dione in 98% yield without bromination. Moreover, we can control eitherbromination or oxidative demethylation, or both reactions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/01/20 alle ore 21:24:12