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Synthesis and structure of novel 3,4-annelated coumarin derivatives

✍ Scribed by Milan S. Dekić; Biljana R. Dekić; Vidoslav S. Dekić; Stojadin V. Deki

Publisher
Journal of Heterocyclic Chemistry
Year
2008
Tongue
English
Weight
236 KB
Volume
45
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

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Condensation of 4‐chloro‐2‐oxo‐2__H__‐chromene‐3‐carbonitrile (1) with heteroarylamines 2a‐d in acetonitrile containing a catalytic amount of triethylamine followed by spontaneous intramolecular cyclization gave the novel coumarin derivatives 3a‐d, respectively. These compounds underwent acid hydrolysis giving the corresponding oxoderivatives 4a‐d. The structural assignments of the synthesized compounds were based on elemental, IR, ^1^H and ^13^C NMR analyses.

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