| Abstract: | A novel efficient synthesis of fluorescent, fused quinoxalines was achieved. 7-Triazolyl-1,4-dioxino2,3-b]-quinoxalines were synthesized by the diazotisation of 7-amino-1,4-dioxino2,3-b]quinoxaline and coupling with selected aromatic amines followed by air oxidation. Diazotised aryl amines were coupled with 7-amino-1,4-dioxino2,3-b]quinoxalines followed by subsequent air oxidation afforded 1,4-dioxino2,3-b]quinoxalino-6,5-d]1,2,3-triazoles. 7-Amino-1,4-dioxino2,3-b]quinoxaline was condensed with conjugated enol ethers followed by cyclization in dowtherm resulted in 1,4-dioxino2,3-b]quinoxalino6,5-b]pyridines. |
