Synthesis of substituted flavones and arylchromones using P and Si keggin heteropolyacids as catalysts

A simple and clean procedure for the preparation of functionalized flavones and chromones using commercial Keggin heteropolyacid in acetonitrile medium is described for the cyclization of 1-(2-hydroxyaryl)-3-aryl-1,3-propanodiones. Sixteen examples are reported, yields ranging in 60-91%; five substi...

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Detalhes bibliográficos
Autores: Bennardi, Daniel O., Romanelli, Gustavo Pablo, Jios, Jorge L., Vazquez, Patricia Graciela, Caceres, Carmen Victoria, Autino, Juan Carlos
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2007
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/16753
Acesso em linha:http://hdl.handle.net/11336/16753
Access Level:acceso abierto
Palavra-chave:1-(2-Hydroxyaryl)-3-Aryl-1,3-Propanodiones
Clean Procedure
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
Descrição
Resumo:A simple and clean procedure for the preparation of functionalized flavones and chromones using commercial Keggin heteropolyacid in acetonitrile medium is described for the cyclization of 1-(2-hydroxyaryl)-3-aryl-1,3-propanodiones. Sixteen examples are reported, yields ranging in 60-91%; five substituted 2-naphthylchromones are prepared for the first time

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