反应详情

温度

100 °C

To 1-fluoro-2-methyl-5-(methyloxy)-4-nitrobenzene (Example 113, Step B) (2.02 g, 10.9 mmol) and 4-[2-(methylsulfonyl)ethyl]piperidine (2.48 g, 13.0 mmol) in DMSO (75 mL) was added K2CO3 (5.26 g, 38.1 mmol). The mixture was stirred at 100° C. for 2 days. The mixture was diluted with EtOAc, washed with H2O (4×), and rotovapped down. The crude residue was taken up in DCM and dried (MgSO4), filtered, and concentrated. Purification by flash chromatography provided the title compound of Step D (3.26 g, 9.14 mmol, 84%). 1H NMR (400 MHz, DMSO-d6) δ 1.30 (q, J=11.0 Hz, 2H), 1.52 (br. s., 1H), 1.60-1.72 (m, 2H), 1.78 (d, J=12.1 Hz, 2H), 2.17 (s, 3H), 2.67 (t, J=11.6 Hz, 2H), 2.95 (s, 3H), 3.07-3.21 (m, 2H), 3.21-3.35 (m, 2H), 3.88 (s, 3H), 6.66 (s, 1H), 7.74 (s, 1H).

1. washwashed with H2O (4×)
2. dry with materialdried (MgSO4)
3. filtrationfiltered
4. concentrationconcentrated
5. customPurification by flash chromatography