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Titolo:
THE VILSMEIER CYCLIZATION OF AZIDES - SYNTHESIS OF OXAZOLES AND VINYLAZIDES FROM 2-AZIDOACETOPHENONES
Autore:
MAJO VJ; PERUMAL PT;
Indirizzi:
CENT LEATHER RES INST,DIV ORGAN CHEM CHENNAI 600020 INDIA CENT LEATHER RES INST,DIV ORGAN CHEM CHENNAI 600020 INDIA
Titolo Testata:
Tetrahedron letters
fascicolo: 39, volume: 38, anno: 1997,
pagine: 6889 - 6892
SICI:
0040-4039(1997)38:39<6889:TVCOA->2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
HETEROCYCLIC SYNTHESIS; PHOTOCHEMICAL DECOMPOSITION; HAACK REAGENT; SALTS; ISOQUINOLINES; SUBSTITUENTS; DERIVATIVES; PYRIDINES; ACIDS; ROUTE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
40
Recensione:
Indirizzi per estratti:
Citazione:
V.J. Majo e P.T. Perumal, "THE VILSMEIER CYCLIZATION OF AZIDES - SYNTHESIS OF OXAZOLES AND VINYLAZIDES FROM 2-AZIDOACETOPHENONES", Tetrahedron letters, 38(39), 1997, pp. 6889-6892

Abstract

The synthesis of 5-aryloxazole-4-carboxaldehydes was accomplished by an unprecedented Vilsmeier cyclization of 2-azidoacetophenones. One-pot synthesis of these oxazolecarboxaldehydes from 2-bromoacetophenones by dehaloazidation-Vilsmeier cyclization reaction sequence provided better yields. The treatment of 2-azidoacetophenones with Vilsmeier reagent (DMF/POCl3) at rt resulted in the exclusive formation of alpha-azido-beta-chlorovinyl azides in moderate yields. (C) 1997 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 07:41:11