反应详情

温度

-78 °C

N-Bromosuccinimide (64.4 mg, 0.36 mmol) was added to a mixture solution of tert-butyl 4-(1-(pyridin-4-yl)-1H-indol-6-yl)piperazine-1-carboxylate (137 mg, 0.36 mmol) in THF (12 mL) at −78° C. After stirring at −78° C. for 2 hours, the mixture was further stirred at 0° C. for 1 hour and then pyridine (88 μL, 1.09 mmol) was added. After filtering using a diatomite pad, the solution was adsorbed by adding silica gel. Purification by chromatography (silica gel, EA:Hx=4:1) yielded the target compound (49.1 mg, 30%) as white solid.

1. stirringthe mixture was further stirred at 0° C. for 1 hour
2. filtrationAfter filtering
3. additionby adding silica gel
4. customPurification by chromatography (silica gel, EA:Hx=4:1)