反应详情

温度

120 °C

A mixture of 2,3,4,5-tetrahydro-2,8-dimethyl-1H-pyrido[4,3-b]indole (2.6 g, 13.1 mmol, 1 equiv.) and NaH (55%, 750 mg, 17.2 mmol, 1.3 equiv.) in 60 mL of THF was heated to 120° C. for 1 h. The reaction mixture was cooled to RT and compound 2-(4-fluorophenyl)-2-methyloxirane (4 g, 26 mmol, 2 equiv.) in DMF (25 mL) was added dropwise for 5 min. at RT followed by heating at 120° C. for 2 h. The reaction mixture was cooled to RT and water (10 mL) was added followed by dilution with EtOAc (800 mL), which was washed with water (3×150 mL) and then brine, dried over sodium sulfate and concentrated under vacuum. The product was purified using column chromatography over 230-400 Silica gel (flash) using 15% MeOH in EtOAc as eluent. Yield: 3 g (66%). 1H NMR (DMSO-d6, oxalate salt) δ (ppm): 7.5 (m, 2H), 7.3 (d, 1H), 7.12 (m, 3H), 6.8 (d, 1H), 4.3 (bs, 1H), 4.2 (m, 2H), 4.0 (m, 3H), 3.4 (bs, 1H), 3.0 (m, 1H), 2.9 (s, 3H), 2.3 (s, 3H), 1.5 (m, 3H).

1. temperatureThe reaction mixture was cooled to RT
2. temperatureby heating at 120° C. for 2 h
3. temperatureThe reaction mixture was cooled to RT
4. washwas washed with water (3×150 mL)
5. dry with materialbrine, dried over sodium sulfate
6. concentrationconcentrated under vacuum
7. customThe product was purified