HCID 13385678, compound → HCID 20227410, compound

Participants

Reaction Steps

2,6,7-Trichloro-3-hydrazinoquinoxaline (4.9 g., 0.018 mole) in triethyl orthopropionate (50 ml.) was heated at 100° C. for 2 hours. The precipitate which formed was collected by means of filtration at room temperature and washed with cyclohexane. Recrystallization from chloroform/cyclohexane two times then afforded 2.9 g. (54% yield) of pure 1,7,8-trichloro-1-ethyl-[1,2,4]triazolo[4,3-a]quinoxaline as a pink solid (m.p. 198°-201° C.). Mass spectrum: m/e, 300 (P); m/e, 302 (P+2); m/e, 304 (P+4); m/e, 306 (P+6).

Provenance & Evidence