Journal
POLYCYCLIC AROMATIC COMPOUNDS
Volume 38, Issue 1, Pages 42-50Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10406638.2016.1143848
Keywords
Dialkynyl-quinoxalines; palladium nanoparticles; Quinoxalines; Sonogashira coupling; tandem cyclization
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Funding
- Fundamental Research Foundation - Department of Science and Technology of Ho Chi Minh City Government
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We have reported synthesis of monoalkynyl- and dialkynyl-quinoxalines using Pd(0)/PEG nanoparticles as a catalyst and the tandem cyclization of the dialkynequinoxalines with sodium azide in high yields. The structures of all synthesized compounds were confirmed by IR, NMR and ESI-MS. The derivatives showed the absorption maxima at the region of 370 to 442nm and emission maxima at the region of 386 to 539nm with high fluorescence intensity in chloroform. It suggests that compounds 4b, 4c, 5b and 5c can be potential candidates for optical device applications.
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