反应详情

温度

140 °C

Compound 27 (3.5 g, 8.29 mmol) was dissolved in bromobenzene (150 mL). The solution was heated at 140° C. under N2 and monitored by LC every hour. The reaction was complete after 7 hours. The solution was evaporated and purified by flash chromatography (3% MeOH/CH2Cl2) to give 2.5 g (83%) of intended product as a tan solid. 1H NMR (400 MHz, CDCl3): δ 8.22 (s, 1H), 7.27-7.39 (m, 6H), 5.40 (s, 2H), 2.57 (s, 3H). MS (ES) [m+H] calc'd for C21H23N3OSi, 362; found 362.

1. waitmonitored by LC every hour
2. customThe solution was evaporated
3. custompurified by flash chromatography (3% MeOH/CH2Cl2)