Potassium Nitrate → HCID 90242331, compound

Participants

Reaction Conditions

Reaction Steps

2,5,6-tribromo-1H-1,3-benzodiazole (Method 1) (1.4 mmol, 500 mg) was dissolved in concentrated H2SO4 (4 ml). Then KNO3 (1.7 mmol, 171 mg) was added in one portion at 0° C. The resulting mixture was stirred at 0° C. for 3 h and at RT overnight. The mixture was poured onto ice. The product was filtered and washed with water to afford compound 2,5,6-tribromo-4-nitro-1H-1,3-benzodiazole (487 mg). 1H NMR (600 MHz, DMSO) δ 14.33 (s, 1H), 8.22 (s, 1H).; m/z 399.7; rt 3.0 min.

Provenance & Evidence