反应详情

Preparation according to Example 1: 4-[2-fluoro-3-(methylsulfonyl)phenyl]piperidine (0.42 g, 1.63 mmol), acetonitrile (20 ml), potassium carbonate (0.45 g, 3.2 mmol) and 2-(2-bromoethyl)-1,3-dioxolan (0.205 ml, 1.65 mmol). Yield: 0.18 g (31%). The amine was converted to the hydrochloric acid salt and recrystallized from ethanol/diethyl ether: M.p. 224-225° C. MS m/z (relative intensity, 70 eV) 357 (M+, 3), 270 (bp), 257 (59), 256 (27), 178 (90).

1. customPreparation
2. customrecrystallized from ethanol/diethyl ether