Synthesis of 2-Amino-4-(2-hydroxynaphthyl)-4H-chromene-3-carbonitriles by Michael Addition and Their Transformation into New Pentacyclic Compounds |
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Authors: | Lamia Dammak Myriam Kammoun Souhir Abid Rachid El Gharbi |
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Affiliation: | Laboratoire de Chimie Appliquée: Hétérocycles, Corps Gras et Polymères, Faculté des Sciences de Sfax , Université de Sfax , Sfax , Tunisia |
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Abstract: | 2-Amino-4-(2-hydroxynaphthyl)-4H-chromene-3-carbonitriles were synthesized by Michael addition of various 3-cyanoiminocoumarins and β-naphthol in good yield. The heterocyclization of these materials in an acidic medium leads new heterocyclic compounds, which have not previously been described, in moderate to good yields and good selectivity. The synthesized compounds were characterized by infrared, 1H NMR, 13C NMR, two-dimensional NMR, and elemental analysis. |
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Keywords: | 2-Amino-4H-chromene heterocyclization iminocoumarin Michael addition roman" >β-naphthol |
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