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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Main Authors: | , , |
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Format: | Digital revista |
Language: | English |
Published: |
Sociedade Brasileira de Química
2011
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532011000500013 |
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