反应详情

温度

150 °C

To a solution of 5-bromo benzoxazolinone (1 g, 4.7 mmol) in DMF (15 mL), were added Zn(CN)2 (1 g, 9.4 mmol) and Pd(PPh3)4. The reaction was stirred at 150° C. for 24 h. The reaction progress was monitored by TLC (100% EtOAc). The reaction was diluted with EtOAc (10 mL) and filtered through Celite® brand filter agent. The organic layer was concentrated and purified by column chromatography (silica gel, 0-50% EtOAc in hexanes) to give the title compound. 1H NMR (400 MHz, CDCl3): δ 8.6 (br s, 1H), 7.5 (dd, J=1.8, 8.4 Hz, 1H), 7.3-7.4 (m, 2H).

1. filtrationfiltered through Celite® brand
2. filtrationfilter agent
3. concentrationThe organic layer was concentrated
4. custompurified by column chromatography (silica gel, 0-50% EtOAc in hexanes)