Title of article
Vinyltriphenylphosphonium salt mediated synthesis of functionalized coumarins
Author/Authors
Issa Yavari، نويسنده , , Mehdi Adib، نويسنده , , Leila Hojabri، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2001
Pages
4
From page
7537
To page
7540
Abstract
Protonation of the reactive 1:1 intermediate produced in the reaction between triphenylphosphine and dimethyl acetylenedicarboxylate by hydroquinone, resorcinol, catechol or pyrogallol leads to vinylphosphonium salts, which undergo Michael addition with the conjugate base of the hydroxy acid to produce highly functionalized 2-oxo-2H-chromene derivatives in good yields.
Keywords
vinylation , Coumarin derivatives , Triphenylphosphine , ring formation , aromatic substitution
Journal title
Tetrahedron
Serial Year
2001
Journal title
Tetrahedron
Record number
1082367
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