Chinese Chemical Letters, ( ISI ), Volume (21), No (12), Year (2010-12) , Pages (1423-1426)

Title : ( Efficient one-pot synthesis of 1,3-diaryl-3H-benzo[f]chromenes using ferric hydrogensulfate )

Authors: Hossein Eshghi , Gholamhossein Zohuri , , Mohamad Vakili ,

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Abstract

An efficient and easy method for one-pot three-component synthesis of 1,3-disubstituted-3H-benzo[f ]chromenes by the condensation of naphtol, aromatic aldehyde derivatives and phenylacetylene in the presence of ferric hydrogensulfate [Fe(HSO4)3], has been described. The catalyst displayed high activity which afforded the corresponding 1,3-disubstituted-3H-benzo[f ]chromenes in satisfying yields. Alkyl-substituted phenols were examined and the corresponding benzopyran derivatives were synthesized in moderate yields. Heterogeneous nature of the using catalyst made it reusable for further chemical reactions.

Keywords

, 1, 3-Disubstituted-3H-benzo[f]chromenes; Ferric hydrogensulfate; One-pot synthesis; Naphtopyran; Benzopyran