反应详情

To a solution of EXAMPLE 34D in 1 mL dichloromethane was added 1 mL trifluoroacetic acid. The solution was stirred at room temperature for 25 minutes and the solvent was removed. The crude material was diluted with ethyl acetate and washed with saturated sodium bicarbonate and brine, dried over magnesium sulfate, filtered, and concentrated to give the title compound. MS (ESI) m/e 287.9 (M+H)+; 1H NMR (DMSO-d6) δ 6.70 (s, 1H), 7.03 (s, 1H), 7.11-7.30 (m, 1H), 7.37-7.64 (m, 3H), 7.76-8.01 (m, 2H), 8.18-8.48 (m, 3H), 11.52 (s, 1H), 12.23 (s, 1H).

1. customthe solvent was removed
2. additionThe crude material was diluted with ethyl acetate
3. washwashed with saturated sodium bicarbonate and brine
4. dry with materialdried over magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated