反应详情

Under a nitrogen stream, a solution of 1-benzenesulfonyl-6-bromo-5-methyl-1H-indole (40 mg, 0.11 mmol), N-bromosuccinimide (NBS) (22 mg, 0.12 mmol) and 2,2′-azobis(isobutyronitrile) (AIBN) (1 mg, 0.01 mmol) in carbon tetrachloride (0.5 mL) was heated to reflux for 1 hour. The reaction mixture was cooled to room temperature, and then purified by silica gel column chromatography (developing solution=ethyl acetate:n-hexane (1:9)), to thereby obtain the titled compound (22 mg, 45%).

1. temperatureto reflux for 1 hour
2. custompurified by silica gel column chromatography (developing solution=ethyl acetate:n-hexane (1:9))