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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 20, 1990 - Issue 22
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Original Articles

Preparation of a New Series, the 3-Ureidomethylenecoumarins by Condensation of 4-Hydroxycoumarin with Substituted Ureas

R. Sakellariou Laboratoire des IMRCP, UA CNRS 470, Université Paul Sabatier, 118 route de Narbonne, 31062, Toulouse Cédex, FRANCE
,
V. Spéziale Laboratoire des IMRCP, UA CNRS 470, Université Paul Sabatier, 118 route de Narbonne, 31062, Toulouse Cédex, FRANCE
&
M. Hamdi Laboratoire des Composés Hétérocycliques, Institut de Chimie, Université des Sciences et de la Technologie H. Boumediene, BP 32 El-alia, Bab-Ezzouar, Alger, ALGERIA
Pages 3443-3451 | Received 08 Oct 1990, Published online: 24 Oct 2006
 
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Abstract

We report the synthesis in high yield of a series of 3-ureido-methylenecoumarins by condensation of substituted ureas with 4-hydroxycoumarin in the presence of ethyl orthoformate.

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