反应详情

A mixture of (tert-butoxy)-N-[1-(3-ethoxy-4-methoxyphenyl)-3-hydroxybutyl]carboxamide (0.98 g, 2.89 mmol) and 4Nhydrochloric acid/dioxane (3 mL) in methylene chloride (10 mL) was stirred at room temperature for 16 hours. The resulting slurry was filtered and washed with ethyl acetate to give 4-amino-4-(3-ethoxy-4-methoxyphenyl)butan-2-ol hydrochloride as a white solid (0.68 g, 85%); 1H NMR (D2O) δ7.12 (m, 3H), 4.47 (t, J=7.0 Hz, 1H), 4.20 (q, J=7.4 Hz, 2H), 3.90 (s, 3H), 3.83-3.76 (m, 1H), 2.21-2.15 (m, 2H), 1.43 (t, J=6.9 Hz, 3H), 1.24 (d, J=6.1 Hz, 3H); 13C NMR (D2O) δ151.75, 150.48, 131.92, 123.09, 115.05, 114.54, 67.86, 66.98, 58.53, 55.35, 44.41, 24.49, 16.68.

1. filtrationThe resulting slurry was filtered
2. washwashed with ethyl acetate