Title of article
Bi(OTf)3-catalyzed solvent-free synthesis of pyrano[3,2-c]coumarins through a tandem addition/annulation reaction between chalcones and 4-hydroxycoumarins
Author/Authors
Gohain، نويسنده , , Mukut and van Tonder، نويسنده , , Johannes H. and Bezuidenhoudt، نويسنده , , Barend C.B.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2013
Pages
4
From page
3773
To page
3776
Abstract
A Bi(OTf)3-catalyzed tandem addition/annulation reaction is described in order to synthesize pyrano[3,2-c]coumarins under solvent-free conditions. Substituted/unsubstituted chalcones were conveniently condensed with various 4-hydroxycoumarins by means of this environmentally benign method which produces water as the only side product.
Keywords
4-Hydroxycoumarin , Bismuth trifluoromethanesulfonate , Addition , annulation , Chalcone , 2-c]coumarin
Journal title
Tetrahedron Letters
Serial Year
2013
Journal title
Tetrahedron Letters
Record number
1884936
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