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Articles • J. Braz. Chem. Soc. 22 (5) • May 2011 • https://doi.org/10.1590/S0103-50532011000500013   copy

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

Authorship SCIMAGO INSTITUTIONS RANKINGS

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

4H-chromenes; dihydropyrano[3,2-c]chromenes; TBBDA; PBBS

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