Potassium Carbonate → (3-{[3-(2-Isopropoxy-phenoxy)-propylamino]-methyl}-phenyl)-piperidin-1-yl-methanone

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2-[3-(2-Isopropoxy-phenoxy)-propyl]-isoindole-1,3-dione. To a solution of 2-isopropoxy-phenol (0.50 g, 3.3 mmol) in DMF (5 mL) was added K2CO3 (2.3 g, 17 mmol), and the resulting suspension was stirred at 25° C. for 15 min. A solution of 2-(3-bromo-propyl)-isoindole-1,3-dione (0.97 g, 3.6 mmol) in DMF (2 mL) was added, and the reaction mixture was heated to 80° C. for 18 h. The mixture was filtered, and the filtrate was diluted with 1:1 Et2O/EtOAc (100 mL), washed with H2O (2×20 mL) then brine (20 mL), dried (MgSO4), filtered, and concentrated under reduced pressure. The crude residue was purified by column chromatography (5-20% EtOAc/hexanes) to provide the desired product (0.956 g, 87%). 1H NMR (400 MHz, CDCl3): 7.87-7.82 (m, 2H), 7.73-7.69 (m, 2H), 6.93-6.86 (m, 4H), 4.46 (hept, J=6.1 Hz, 1H), 4.06 (t, J=6.2 Hz, 2H), 3.92 (t, J=7.1 Hz, 2H), 2.20 (quint, J=6.4 Hz, 2H), 1.33 (d, J=6.1 Hz, 6H).

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