Triethyl orthoacetate → 4-Chloro-1-methyl[1,2,4]triazolo[4,3-a]quinoxaline

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Reaction Steps

2-Chloro-3-hydrazinoquinoxaline (15.5 g., 0.080 mole), the product of Example 1, was stirred with triethyl orthoacetate for 3 hours at 100° C. The mixture was cooled to room temperature and the solid precipitate was collected by filtration, washed with ethanol and air dried to afford 11.4 g. (65% yield) of 4-chloro-1-methyl-[1,2,4]triazolo[4,3-a]quinoxaline, m.p. 215°-222° C. Mass spectrum: m/e, 218 (P).

Provenance & Evidence