反应详情

To a solution of tert-butyl-1-((S)-4-(3,4-dichlorophenyl)-3,4-dihydronaphthalen-2-yl)ethylcarbamate 49b (100 mg, 0.24 mmol) in CH2Cl2 (5 mL) was added TFA (5 mL). The reaction mixture was stirred for 2 h before being concentrated. The residue was subjected reverse phase column chromatography (CH3CN/H2O/0.1% Formic acid=5% to 100%) to give 1-((S)-4-(3,4-dichlorophenyl)-3,4-dihydronaphthalen-2-yl)ethanamine 45 (65 mg, 85%). 1H NMR (400 MHz, CDCl3) δ 7.33 (d, J=8.0 Hz, 1 H), 7.23 (d, J=2.4 Hz, 1 H), 7.19 (d, J=7.2 Hz, 1 H), 7.14-7.08 (m, 2 H), 6.98 (dd, J=2.4, 8.4 Hz, 1H), 6.82 (d, J=7.2 Hz, 1 H), 6.46 (s, 1 H), 4.08 (t, J=8.4 Hz, 1 H), 3.61 (q, J=6.4 Hz, 1 H), 2.69 (dd, J=7.6, 16.8 Hz, 1 H), 2.46 (dd, J=8.8, 16.8 Hz, 1 H), 2.10 (broad, 2 H), 1.14 (d, J=8.0 Hz, 3 H); 13C NMR (100 MHz, CDCl3) δ 144.75, 143.04, 136.16, 134.41, 132.52, 130.53, 130.41, 127.96, 127.80, 127.62, 127.52, 126.80, 121.07, 52.17, 43.68, 32.41, 21.53; ESI MS m/z 318.0.

1. concentrationbefore being concentrated