Potassium Nitrate → HCID 178481719, compound

Participants

Reaction Conditions

Reaction Steps

Finely powdered potassium nitrate (0.47 g, 4.6 mmol) was added to an ice-cooled solution of 7,8-dihydroxy-2-methyl-2H-1,2,3-triazolo[4,5-f]quinoxaline (1.0 g, 4.6 mmol). The mixture was stirred at 0° C. for 11/2 h, then at room temperature for 4 h and finally poured into ice/water. The resulting solution was extracted with ethyl acetate. The extract was dried over anhydrous sodium sulfate and concentrated to dryness giving 0.27 g (22%) of the nitro compound; m.p.>300° C.; IR (KBr): 1700 cm-1 ; 1H-NMR (DMSO-d6): 4.63 (s, 3H, CH3), 8.15 (s, 1H, ArH), 12.1 (broad s, 1H, OH), 13.0 (broad s, 1H, OH).

Provenance & Evidence