反应详情

温度

0 °C

6-Methoxy-1,3,4,5-tetrahydro-benzo[b]azepin-2-one (prepared according to: Hassner, A.; Amit, B.; Marks, V.; Gottlieb, Hugo E., J. Org. Chem. 2003, 68(18), 6853-6858.) (300 mg, 1.57 mmol) in 15 mL of DMF was cooled to 0° C. in an ice bath, and to the solution was added NaH (60% in mineral oil) (70 mg, 1.73 mmol). After 10 minutes of stirring at 0° C., Iodomethane (270 mg, 1.88 mmol) was added to the solution. The reaction was allowed to warm to room temperature and upon completion (after 30 minutes) was quenched with ice and water. The aqueous solution was extracted 3× with diethyl ether, and the organic layers were washed with water and brine, dried with MgSO4, and concentrated to give 6-Methoxy-1-methyl-1,3,4,5-tetrahydro-benzo[b]azepin-2-one as a yellow oil (quantitative yield). 1H-NMR (CDCl3) δ 7.22 (t, J=8.2 Hz, 1H), 6.80 (d, J=8.1 Hz, 1H), 6.75 (d, J=8.3 Hz, 1H), 3.84 (s, 3H), 3.33 (s, 3H), 2.52-3.09 (br pk, 2H), 2.29 (t, J=7.1 Hz, 2H), 2.12 (br s, 2H); LC/MS (ESI-pos) m/z 205.98 (M+H).

1. temperatureto warm to room temperature and upon completion (after 30 minutes)
2. customwas quenched with ice and water
3. extractionThe aqueous solution was extracted 3× with diethyl ether
4. washthe organic layers were washed with water and brine
5. dry with materialdried with MgSO4
6. concentrationconcentrated