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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 40, 2010 - Issue 6
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Original Articles

Convenient Synthesis of a New Series of 3-Triazolonyl Iminocoumarins

, , &
Pages 888-900 | Received 06 Jan 2009, Published online: 22 Feb 2010
 

Abstract

3-Cyano-7-diethylamino-N-ethoxycarbonyl-iminocoumarin reacted with different hydrazines as N-nucleophiles to afford, in one step, a new series of 2-N-substituted 3-triazolonyl-iminocoumarins in good yields. In two cases, N-unsubstituted derivatives were also obtained. The structures of all the products obtained were confirmed by infrared, 1H NMR, 13C NMR, and elemental analysis. The optical properties of three of these compounds in dichloromethane and ethanol were reported.

Notes

a Decomposition temperature = 170 °C.

b Only N-unsubstituted compounds were obtained in all experiments.

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