Reaction of β-arylidennaphthylamines with 4-hydroxycoumarin. A correction in structural assignment of the product. III |
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| Authors: | Roberto Martí nez,Eduardo Cort s,Rub n A. Toscano,L. Josu Alfaro |
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| Affiliation: | Roberto Martínez,Eduardo Cortés,Rubén A. Toscano,L. Josué Alfaro |
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| Abstract: | The reaction of 4-hydroxycoumarin with β-arylidennaphthylamines constitutes a convenient synthetic route to the hitherto unknown 2H-benzo[f][1]benzopyrano[4,3-b]quinolin-2-one, VI . The X-ray crystallography data conform with the present benzopyrano[4,3-b]quinolin-2-one ring system and disprove the benzopyrano[3,4-c]quinolin-2-one structure previously assigned for such reaction products. |
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