反应详情

A solution of 1-{6-[cis-4-(1,1-dimethyl-propyl)-cyclohexyloxy]-naphthalen-2-ylmethyl}-piperidine-4-carboxylic acid ethyl ester (0.382 g, 0.820 mmol) and lithium hydroxide (196 mg, 8.20 mmol) in tetrahydrofuran (3.32 mL, 41.0 mmol) and water (0.738 mL, 41.0 mmol) was stirred at room temperature overnight. LCMS showed a single desired product peak Rt=1.78 min, m/z=438.40 [M+1], 100%. The solvent was concentrated and neutralized with concentrated HCl. The solid was suspended with water and filtered and washed thoroughly with water and ether then dried to give a white solid (86.9 mg, 24%). 1H NMR (400 MHz, METHANOL-d4) δ ppm 0.81-0.90 (m, 9H), 1.19-1.70 (m, 10H), 2.19 (d, J=13.99 Hz, 2H), 2.67 (s, 2H), 4.45 (s, 2H), 4.78 (t, J=2.45 Hz, 1H), 7.26 (dd, J=8.91, 2.45 Hz, 1H), 7.31 (d, J=2.26 Hz, 1H), 7.53 (dd, J=8.50, 1.73 Hz, 1H), 7.86 (dd, J=8.69, 3.42 Hz, 2H), 7.96 (s, 1H).