反应详情

温度

0 °C

1-(3-Pyridyl)-4-tert-butoxycarbonyl homopiperazine (25.0 g, 90.1 mmol) was solved in acetonitrile (400 ml) and cooled to 0° C. N-Bromosuccinimide (19.3 g, 108.2 mmol) was added during 10 min. Water (400 ml) was added and the mixture was extracted twice with diethyl ether (200 ml). Chromatography on silica gel with a mixture of petroleum: ethyl acetate (1:1) gave the title compound as free base. Yield 18.7 g, 58%.

1. extractionthe mixture was extracted twice with diethyl ether (200 ml)
2. additionChromatography on silica gel with a mixture of petroleum: ethyl acetate (1:1)