反应详情

温度

125 °C

To a solution of EXAMPLE 41A (1.70 g) in hot N,N′-dimethylformamide (60 mL) was added acetic acid (50 mL) and the solution heated at 125° C. for 3 hours. After cooling, the solution was filtered, and the yellow solid washed with methanol and dried to give the title compound (1.52 g, 95%). MS (APCI): 286 (M+1)+.

1. temperatureAfter cooling
2. filtrationthe solution was filtered
3. washthe yellow solid washed with methanol
4. customdried