反应详情

温度

100 °C

To a solution of 4-amino-2-fluorophenol (7.42 g, 58.4 mmol) in DMSO (65 mL) was added potassium tert-butoxide (7.75 g, 69.0 mmol)). After 30 min, intermediate 317 (17.67 g, 53.1 mmol) was added and the reaction mixture was heated at 100° C. for 1.5 h, cooled down to room temperature, poured in water (300 mL) at 40-45° C. and stirred for 30 min. The solid was collected by filtration, washed with water (2×30 mL) and dried for 2 h. This material was triturated with ether (60 mL), to afford title compound 319 (19.80 g, 88% yield) as a brown solid. MS (m/z): 424.1 (M+H).

1. temperaturecooled down to room temperature
2. filtrationThe solid was collected by filtration
3. washwashed with water (2×30 mL)
4. customdried for 2 h
5. customThis material was triturated with ether (60 mL)