Abstract
The synthesis of various 2,4-disubstituted 4H-1,3,4-thiadiazino-[5,6-b]quinoxalines via reaction of hydrazonoyl halides with 2-amino-3-quinoxalinethiol in ethanol in the presence of sodium ethoxide is described. The structures of the reaction products were elucidated by chemical evidence and by their IR,
1
H,
13
C-NMR, and MS spectra. The mechanism of the formation of the products is also discussed.