One-pot synthesis of 4H-Chromene and Dihydropyrano[3,2-c]chromene derivatives in hydroalcoholic media

4H-Chromenes and dihydropyrano[3,2-c]chromenes are obtained in good to excellent yields by a simple, mild and efficient procedure using poly(N,N'-dibromo-N-ethyl-benzene-1,3-disulfonamide) [PBBS] and N,N,N',N'-tetrabromobenzene-1,3-disulfonamide [TBBDA ] as catalysts

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Bibliographic Details
Main Authors: Ghorbani-Vaghei,Ramin, Toghraei-Semiromi,Zahra, Karimi-Nami,Rahman
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 2011
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532011000500013
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