528853-29-4Relevant academic research and scientific papers
Synthesis of some [1,2,4]triazino[5,6-b]quinoline derivatives [1]
Styskala, Jakub,Lycka, Antonin,Slouka, Jan
, p. 1305 - 1308 (2002)
By coupling of diazonium salts with ethyl N-(4-oxo-1,4-dihydroquinolin-2-yl)carbamate 4, the corresponding 3-arylazocompounds 5 were obtained. These ones were cyclized thermally or in alkaline medium to the corresponding 2-aryl-2,3,5,10-tetrahydro-[1,2,4]triazino[5,6-b]quinolin-3,10-diones 6. Compounds 6 were transformed by alkaline hydrolytic splitting to the corresponding 2-amino-3-arylazo-1,4-dihydroquinolin-4-ones 7. Starting carbamate 4 was prepared by a two-step synthesis from 2-amino-1,4-dihydroquinolin-4-one 1.
