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Titolo:
A NEW APPROACH FOR THE SYNTHESIS OF SOME 1,4-BENZOXATHIIN 4,4-DIOXIDEDERIVATIVES
Autore:
FAN AL; CAO S; ZHANG Z;
Indirizzi:
NANJING UNIV CHEM TECHNOL,DEPT APPL CHEM NANJING 210009 PEOPLES R CHINA NANJING UNIV,DEPT CHEM NANJING 210093 PEOPLES R CHINA
Titolo Testata:
Journal of heterocyclic chemistry
fascicolo: 6, volume: 34, anno: 1997,
pagine: 1657 - 1660
SICI:
0022-152X(1997)34:6<1657:ANAFTS>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
SULFONES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
A.L. Fan et al., "A NEW APPROACH FOR THE SYNTHESIS OF SOME 1,4-BENZOXATHIIN 4,4-DIOXIDEDERIVATIVES", Journal of heterocyclic chemistry, 34(6), 1997, pp. 1657-1660

Abstract

A series of 1,4-benzoxathiin 4,4-dioxide derivatives have been prepared by a new synthetic route. The reactions of 2-chloro-4-nitrobenzenethiol 1 with 1-aryl-2-chloroethanones 2 in the presence of sodium hydroxide give 1-aryl-2-(2-chloro-4-nitrophenylthio)ethanones 3 which on oxidation with 30% aqueous hydrogen peroxide afford 1-aryl-2-(2-chloro-4-nitrophenylsulfonyl)ethanones 4. By the reactions of compounds 4 with2-[3 or 4-(bromomethyl)phenyl]benzoxazole in the potassium carbonate,triethylbenzylammonium chloride and dimethylformamide system, 2-aryl-3-arylmethyl-7-nitro-1,4-benzoxathiin 4,4-dioxides 5 or 6 are obtainedvia a tandem alkylation-cyclization process.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 13:29:43