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

AUTOR(ES)

Ghorbani-Vaghei, Ramin, Toghraei-Semiromi, Zahra, Karimi-Nami, Rahman

FONTE

Journal of the Brazilian Chemical Society

DATA DE PUBLICAÇÃO

2011-05

RESUMO

4H-Cromenos e diidropirano[3,2-c]cromenos são obtidos em rendimentos bons a excelentes através de um procedimento simples, brando e eficiente usando poli(N,N'-dibromo-N-etil-benzeno-1,3-dissulfonamida) [PBBS] e N,N,N',N'-tetrabromobenzeno-1,3-dissulfonamida [TBBDA] como catalisadores

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