| Abstract: | A novel efficient synthesis of fluorescent, fused quinoxalines was achieved. 6-Triazolylthiazolo4,5-b]quinoxalines were synthesized by the diazotisation of 6-amino-2-methylthiazolo4,5-b]quinoxaline and coupling with selected aromatic amines followed by air oxidation. Diazotised aryl amines were coupled with 6-amino-2-methylthiazolo4,5-d]quinoxaline followed by subsequent air oxidation afforded 1,2,3-triazolo5,4-f]quinoxalino2,3-d]thiazoles. 6-Amino-2-methylthiazolo4,5-b]quinoxaline was condensed with conjugated enol ethers followed by cyclization in dowtherm resulted in thiazolo4,5-b]quinoxalino6,5-b]pyridine. |
