反应详情

Sodium hydride (0.1 g, 4.16 mmol) was added to a 0° C. solution of tert-butyl 1-(3,4-dichlorobenzyl)-1,2,3,4-tetrahydroquinolin-3-ylcarbamate (0.85 g, 2.09 mmol) and iodomethane (95%, 2.97, 10 eq) in anhydrous tetrahydrofuran (10 mL). The mixture was stirred at room temperature for 1 hour. The mixture was quenched by slowly adding few drops of water. The resulting mixture was dried over anhydrous sodium sulfate and the solvent evaporated. The residue was purified by flash chromatography (eluted with 5% EtOAc in hexane) to give tert-butyl 1-(3,4-dichlorobenzyl)-1,2,3,4-tetrahydroquinolin-3-yl(methyl)carbamate as white solid (789 mg). 1H NMR (DMSO) 400 MHz δ 7.57 (d, J=4 Hz, 1H), 7.61 (brd, J=6.4 Hz, 1H), 7.47 (d, J=1.6, 1H), 7.23 (dd, J=2.0 Hz and 8.4 Hz, 1H), 6.95 (d, J=7.6 Hz, 1H), 6.91 (m, 1H), 6.53 (m, 1H), 6.45 (d, 8.4 Hz, 1H), 4.45 (brd, J=10.4 Hz, 1H), 4.29 (br, 1H), 3.40 (t, 10.4 Hz, 1H), 3.21 (m, 1H), 3.02 (m, 1H), 2.74 (m, 1H), 2.72 (s, 3H), 1.36 (m, 9H). LCMS m/e 422 (M+H).

1. customThe mixture was quenched
2. additionby slowly adding few drops of water
3. dry with materialThe resulting mixture was dried over anhydrous sodium sulfate
4. customthe solvent evaporated
5. customThe residue was purified by flash chromatography (eluted with 5% EtOAc in hexane)