Reaction Steps
To a solution of (4-aminomethyl-2-hydroxymethyl-benzyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-carbamic acid tert-butyl ester (0.86 g, 2.17 mmol) dissolved in CH2Cl2 (15 mL) was added Ac2O (0.21 mL, 2.17 mmol) and Et3N (0.31 mL, 2.17 mmol). The solution was stirred for 30 minutes under a positive pressure of N2. The reaction mixture was quenched with saturated aqueous NaHCO3 (25 mL) and extracted with CH2Cl2 (2×25 mL). The combined organic extracts were dried (Na2SO4), filtered, and concentrated to afford [4-(acetylamino-methyl)-2-hydroxymethyl-benzyl]-(5,6,7,8-tetrahydro-quinolin-8-yl)-carbamic acid tert-butyl ester as a white solid (0.95 g, 99%). 1H NMR (CDCl3) δ 1.06 (s, 9H), 1.65 (m, 1H), 2.01 (m, 3H), 2.08 (m, 1H), 2.70 (m, 2H), 3.87 (d, 1H, J=15.0 Hz), 4.09 (m, 1H), 4.41 (d, 3H, J=6.0 Hz), 5.07 (d, 1H, J=12.0 Hz), 5.56 (d, 1H, J=12.0 Hz), 5.96 (m, 1H), 6.98 (m, 1H), 7.15 (s, 2H), 7.32 (d, 1H, J=6.0 Hz), 7.41 (s, 1H), 8.15 (d, 1H, J=3.0 Hz). Deprotection with TFA following General Procedure F gave N-{3-hydroxymethyl-4-{(5,6,7,8-tetrahydro-quinolin-8-ylamino)-methyl}-benzyl}-acetamide as an off-white solid. 1H NMR (CDCl3) δ 1.79 (m, 2H), 1.94 (m, 1H), 2.00 (s, 3H), 2.26 (m, 1H), 2.77 (m, 2H), 3.89 (m, 2H), 4.13 (d, 1H, J=12.0 Hz), 4.41 (m, 3H), 4.79 (d, 1H, J=12.0 Hz), 7.05 (m, 1H), 7.20 (m, 1H), 7.31 (m, 1H), 7.40 (m, 2H), 8.33 (d, 1H, J=3.0 Hz).
