反应详情

A solution of 2-[3-(dimethylamino)propanoyl]-6-(methyloxy)-1,2,3,4-tetrahydro-7-isoquinolinamine (335 mg, 1.21 mmol) in tetrahydrofuran (10 mL) was treated with lithium aluminum hydride (10 mL, 1 M in diethyl ether, 10 mmol, Aldrich). The mixture was refluxed for 16 h, cooled, quenched carefully via sequential addition of water (0.4 mL), 15% aqueous sodium hydroxide (0.4 mL), and then water (1.2 mL) again. The mixture was stirred vigorously for 1 h and then filtered through a pad of celite. The filtrate was concentrated to provide 2-[3-(dimethylamino)propyl]-6-(methyloxy)-1,2,3,4-tetrahydro-7-isoquinolinamine (284 mg, 1.08 mmol, 90%). 1H NMR (400 MHz, DMSO-d6) δ ppm 1.55-1.65 (m, J=7.2, 7.2, 7.2, 7.2 Hz, 2 H), 2.11 (s, 6 H), 2.19-2.24 (m, 2 H), 2.36-2.41 (m, 2 H), 2.54 (t, J=6.0 Hz, 2 H), 2.63 (t, J=5.4 Hz, 2 H), 3.34-3.41 (m, 2 H), 3.70 (s, 3 H), 4.44 (s, 2 H), 6.28 (s, 1 H), 6.48 (s, 1 H); ESIMS (M+H)+=264.

1. temperatureThe mixture was refluxed for 16 h
2. temperaturecooled
3. customquenched carefully via sequential addition of water (0.4 mL), 15% aqueous sodium hydroxide (0.4 mL)
4. filtrationfiltered through a pad of celite
5. concentrationThe filtrate was concentrated