反应详情

30 mg (0.088 mmol) of 3-chloro-5-(3,5-dimethylisoxazol-4-yl)-3-phenylindolin-2-one and 139 mg (0.176 mmol) of pyridine were dissolved in 5 ml of THF. After the addition of 54 mg (0.88 mmol) of ethane-1,2-diol, the reaction solution was stirred for 5 h at room temperature. Subsequently, the solution was diluted with water. The aqueous phase was extracted with 2×25 mL of EtOAc. The combined organic phases were washed with aqueous NaHCO3 and with water, dried and concentrated in vacuo. The resulting residue was purified by Pre-TLC (eluent: Hexane/EtOAc=1/1) to give product (5 mg, 15%) as a white solid. 1H NMR (400 MHz, DMSO-d6): δ 10.77 (s, 1H), 7.32-7.35 (m, 6H), 7.20 (s, 1H), 7.04 (d, J=8.0 Hz, 1H), 4.65 (t, J=5.6 Hz, 1H), 3.23-3.52 (m, 4H), 2.35 (s, 3H), 2.18 (s, 3H). MS (ESI) m/e [M+1]+ 365.

1. extractionThe aqueous phase was extracted with 2×25 mL of EtOAc
2. washThe combined organic phases were washed with aqueous NaHCO3 and with water
3. customdried
4. concentrationconcentrated in vacuo
5. customThe resulting residue was purified by Pre-TLC (eluent: Hexane/EtOAc=1/1)