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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 18, 1988 - Issue 7
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Original Articles

Synthesis of 3-Carboxycoumarins from O-Methoxybenzylidene Meldrum's Acid Derivatives

Verónica Armstrong Facultad de Química. Pontificia Universidad Católica de Chile., Casilla 6177, Santiago, Chile
,
Oriana Soto Facultad de Química. Pontificia Universidad Católica de Chile., Casilla 6177, Santiago, Chile
,
Jaime A. Valderrama Facultad de Química. Pontificia Universidad Católica de Chile., Casilla 6177, Santiago, Chile
&
Ricardo Tapia Facultad de Química. Pontificia Universidad Católica de Chile., Casilla 6177, Santiago, Chile
Pages 717-725 | Published online: 19 Dec 2006
 
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Abstract

Reaction of o-methoxybenzaldehydes with Meldrum's acid followed by cyclization in sulfuric acid of the benzylidene derivatives 3a-g affords 3-carboxycoumarins in excellent yields.

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