Bromine → HCID 22482331, compound

Participants

Reaction Steps

A stirred solution of 6-ethyl-5-[(4-methoxyphenyl)sulfonyl]-5,6-dihydrophenanthridine (6.0 g, 15.8 mmol) in dichloromethane (800 mL) was treated drop-wise with excess bromine (2.1 mL, 41 mmol). The reaction mixture was heated to reflux and additional bromine (1.0 mL, 10 mmol) was added. The reaction was cooled and stirred at room temperature overnight. The reaction mixture was washed sequentially with a saturated, aqueous sodium thiosulfate solution, water, and a saturated, aqueous, sodium chloride solution. The organic phase was dried over anhydrous magnesium sulfate, filtered through a short column of silica gel, and the solvent was removed in vacuo to afford a crude yellow solid. The crude solid was crystallized from a mixture of ethyl acetate-hexane (1:1), and yielded the title compound (6.3 g, 13.8 mmol, 87%) as a colorless, crystalline solid;

Provenance & Evidence