Title of article
Synthesis of novel 2H,8H-pyrano[2,3-f]chromene-2,8-diones from 8-formyl-7-hydroxy-4-methylcoumarin
Author/Authors
Al-Kawkabani، نويسنده , , Ahmed and Boutemeur-Kheddis، نويسنده , , Baya and Makhloufi-Chebli، نويسنده , , Malika and Hamdi، نويسنده , , Maamar and Talhi، نويسنده , , Oualid and Silva، نويسنده , , Artur M.S.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2013
Pages
4
From page
5111
To page
5114
Abstract
We report the synthesis of novel 2H,8H-pyrano[2,3-f]chromene-2,8-dione based scaffolds by the reaction of 8-formyl-7-hydroxy-4-methylcoumarin with various active methylene compounds. A mechanism of a tandem Knoevenagel condensation and cyclisation reaction is proposed. The structure of all compounds was established on the basis of 1H and 13C NMR data, high resolution mass spectrometry and elemental analysis.
Keywords
Coumarin , pyran-2-one , Knoevenagel reaction , Formylation , heterocyclisation , Translactonisation
Journal title
Tetrahedron Letters
Serial Year
2013
Journal title
Tetrahedron Letters
Record number
1885505
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