Title of article
Efficient synthesis of trisubstituted [1]benzopyrano[4,3-b]pyrrol-4(1H)-one derivatives from 4-hydroxycoumarin
Author/Authors
Liao، نويسنده , , Yuan-Xiu and Kuo، نويسنده , , Peiyu and Yang، نويسنده , , Ding-Yah Yang، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2003
Pages
4
From page
1599
To page
1602
Abstract
Various trisubstituted [1]benzopyrano[4,3-b]pyrrol-4(1H)-one derivatives have been synthesized from 4-hydroxycoumarin with a 30–40% yield over six steps. The key step of the synthesis is a base-promoted intramolecular cyclization of enamines 5, followed by dehydration to generate the fused pyrrole ring.
Keywords
4-Hydroxycoumarin , fused pyrrole ring
Journal title
Tetrahedron Letters
Serial Year
2003
Journal title
Tetrahedron Letters
Record number
1660746
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