反应详情

To a solution of methyl N-[3-[(2-amino-2-methyl-3-phenylpropoxy)methyl]-5-(hydroxymethyl)phenyl]-N-propylmethanesulfonamide (140 mg, 0.269 mmol) in dichloromethane (2.5 mL) were added carbon tetrabromide (116 mg, 0.350 mmol) and triphenylphosphine (85.0 mg, 0.323 mmol). After 15 h, the reaction mixture was concentrated in vacuo and purified by flash chromatography (silica, 0-35% EtOAc/hexanes) to provide N-[3-[(2-amino-2-methyl-3-phenylpropoxy)methyl]-5-(bromomethyl)phenyl]-N-propylmethanesulfonamide as a colorless oil. 1H NMR (400 MHz, CDCl3) δ 7.34 (s, 1H), 7.31 (s, 1H),), 7.30-7.20 (m, 4H), 7.18-7.14 (m, 2H), 4.60-4.50 (m, 3H), 4.49 (s, 2H), 3.64 (t, J=7.2 Hz, 2H), 3.55 (A of AB, d, J=8.7 Hz, 1H), 3.45 (B of AB, d, J=8.7 Hz, 1H), 3.14 (A of AB, d, J=13.3 Hz, 1H), 2.94 (B of AB, d, J=13.3 Hz, 1H), 2.88 (s, 3H), 1.56-1.47 (m, 2H), 1.46 (s, 9H), 1.27 (s, 3H), 0.91 (t, J=7.4 Hz, 3H).

1. concentrationthe reaction mixture was concentrated in vacuo
2. custompurified by flash chromatography (silica, 0-35% EtOAc/hexanes)