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Synthesis and characterization of novel fluorescent compounds derived from 1,4-diethyl-1,2,3,4-tetrahydro-6-nitroquinoxaline

✍ Scribed by Vijay S. Satam; Rajkumar N. Rajule; Amit R. Jagtap; Samir R. Bendre; Hari N. Pati; Vinod R. Kanetkar

Publisher
Journal of Heterocyclic Chemistry
Year
2010
Tongue
English
Weight
212 KB
Volume
47
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

magnified image 1,4‐Diethyl‐1,2,3,4‐tetrahydro‐6‐nitroquinoxaline 4 was synthesized by alkylative reduction of 6‐nitroquinoxaline. Catalytic reduction of 4 followed by cyclocondensation with heterocyclic malondialdehydes afforded novel 8‐(heteroaryl)‐1,4‐diethyl‐1,2,3,4‐tetrahydropyrido[2,3‐g]quinoxalines. The solutions of these novel compounds having 1,4‐diethyl‐1,2,3,4‐tetrahydroquinoxaline framework as an electron releasing system showed absorption in the range of 424–426 nm in the visible region and exhibited brilliant bluish‐green fluorescence. The thermogravimetric curve obtained by thermogravimetric analysis displayed that these fluorophores possess excellent thermal stability with one‐step thermal decomposition. J. Heterocyclic Chem., (2010).

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