反应详情

温度

120 °C

2-Pyridylbenzylalcohol (1.67 g, 15.3 mmol) was dissolved in 1,4-dioxane (25 mL) and NaH (0.92 g, 23 mmol) was added. After stirring for 30 minutes, 4-chloropyridine-N-oxide (2.27 g, 17.5 mmol) was added and the reaction mixture was heated for 1 h at 120° C. Upon cooling, the mixture was purified by column chromatography (40 g ISCO column eluting with methylene chloride and a methanol/ammonia mixture (10:1), gradient 100% methylene chloride to 90% methylene chloride over 30 min at 40 mL/min) to provide the title compound (600 mg, 38%) as a brown solid: 1H NMR (500 MHz, CDCl3) δ 8.62-8.61 (m, 1H), 8.13-8.10 (m, 2H), 7.74-7.73 (dt, J=7.8, 1.4 Hz, 1H), 7.44 (d, J=7.8 Hz, 1H), 7.30-7.29 (d, J=4.8 Hz, 1H), 6.92-6.89 (m, 2H), 5.23 (s, 2H).

1. temperatureUpon cooling
2. customthe mixture was purified by column chromatography (40 g ISCO column
3. washeluting with methylene chloride