Bromine → HCID 22493297, compound

Participants

Reaction Steps

To a solution of 8-methyl-2H-3,1-benzoxazine-2,4(1H)-dione, (10.0 g, 56.5 mmol) and potassium iodide (0.36 g, 1.8 mmol) in chlorosulfonic acid (12 mL) was added bromine (4.6 g, 28.7 mmol). and the reaction was stirred overnight at room temperature. The reaction was then slowly poured onto ice water and neutralized with sodium bicarbonate powder to a pH of 7. The solids were filtered, rinsed with water and to afford the desired intermediate as a white solid (11.4 g).

Provenance & Evidence