反应详情

The product of Example 6C (70 mg, 0.22 mmol) was treated with fumaric acid (29 mg, 0.25 mmol) in EtOAc/EtOH (v. 1:1, 3 mL) at ambient temperature for 10 h. The title compound was obtained as solid (87 mg, yield, 89%). 1H NMR (300 MHz, CD3OD) δ 1.81–2.18 (m, 3H), 2.25–2.39 (m, 1H), 2.48–2.56 (m, 1H), 3.19–3.48 (m, 5H), 3.73–3.85 (m, 1H), 4.86–4.93 (m, 1H), 6.65–6.80 (m, 2H), 6.94–7.10 (m, 4H), 7.36 (dd, J=8.1, 0.7 Hz, 1H), 7.49 (dt, J=7.8, 1.0 Hz, 1H), 7.75 (dt, J=9.2, 2.4 Hz, 2H) ppm. MS (DCl/NH3): m/z 319 (M+H)+. Anal. Calculated for C21H22N2O.1.1C4H4O4: C, 68.39; H, 5.96; N, 6.28. Found: C, 68.10; H, 6.22; N, 6.25.