IODINE CATALYZED CASCADE SYNTHESIS OF FLAVONE DERIVATIVES FROM 2'-ALLYLOXY-α, β-DIBROMOCHALCONES

IODINE CATALYZED CASCADE SYNTHESIS OF FLAVONE DERIVATIVES FROM 2'-ALLYLOXY-α, β-DIBROMOCHALCONES

Synthesis of flavones from 2'-allyloxy-α, β-dibromochalcones has been described. The iodine induced oxidative cyclization of 2'-allyloxy-α, β-dibromochalcones results into the formation of 3-bromoflavanones which ultimately gives flavones. Dehydrobromina...

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Detalles Bibliográficos
Autores principales: NAWGHARE,BEENA R, GAIKWAD,SUNIL V, RAHEEM,ABDUL, LOKHANDE,PRADEEP D
Lenguaje:English
Publicado: Sociedad Chilena de Química 2014
Materias:
Flavones
cyclization
oxidation
dehydrobromination
iodine
dimethyl sulfoxide
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072014000100009
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Sumario:Synthesis of flavones from 2'-allyloxy-α, β-dibromochalcones has been described. The iodine induced oxidative cyclization of 2'-allyloxy-α, β-dibromochalcones results into the formation of 3-bromoflavanones which ultimately gives flavones. Dehydrobromination of 3-bromoflavanone to give flavone is the preferred reaction over dehydrogenation.

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