反应详情

温度

-78 °C

To a mixture of 2-[7-(3-fluoro-benzyloxy)-2-isopropyl-4-oxo-4H-quinazolin-3-yl]-acetamide (50 mg, 0.14 mmol) in dimethylformamide (0.5 mL), dichloromethane (2 mL) was added N-ethyl-N,N-diispropylamine (26.2 mg, 0.2 mmol) and the resulting mixture cooled to −78° C. Then trifluorosulfonic anhydride (49.6 mg, 0.18 mmol) was added and the reaction mixture allowed to warm up to rt over 30 min. The resulting mixture was then poured into sodium hydrogen carbonate (sat. 5 mL), and the mixture extracted with diethylether (3×5 mL). The combined extracts were then washed with brine, dried and evaporated to leave a light yellow solid. Purification by chromatography (SiO2, EtOAc:heptane 1:1 to 85:15) afforded the title compound (26 mg, 55%) as a white solid. MS: m/e=352.2 (M+H+).

1. additionwas added N-ethyl-N,N-diispropylamine (26.2 mg, 0.2 mmol)
2. temperatureto warm up to rt over 30 min
3. extractionthe mixture extracted with diethylether (3×5 mL)
4. washThe combined extracts were then washed with brine
5. customdried
6. customevaporated
7. customto leave a light yellow solid
8. customPurification by chromatography (SiO2, EtOAc:heptane 1:1 to 85:15)