Articulo
Synthesis of substituted flavones and arylchromones using P and Si Keggin heteropolyacids as catalysts
Registro en:
issn:2191-0197
Autor
Bennardi, Daniel Oscar
Romanelli, Gustavo Pablo
Jios, Jorge Luis
Vázquez, Patricia Graciela
Cáceres, Carmen V.
Autino, Juan Carlos
Institución
Resumen
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 l-(2- hydroxyaiyl)-3-aryl-l,3-propanodiones. Sixteen examples are reported, yields ranging in 60-91%; five substituted 2-naphthyIchromones are prepared for the first time. Centro de Investigación y Desarrollo en Ciencias Aplicadas