反应详情

温度

0 °C

Methylamine (0.7 mL, 17.6 mmol) was added to a solution of 7-ethyl-3-methyl-1H-indole-2-carbaldehyde (1.1 mg, 5.8 mmol) in methanol (5 mL) and stirred for 5 h. The mixture was cooled to 0° C. and sodium borohydride (218 mg, 5.8 mmol) added slowly. The mixture was warmed to rt and stirred overnight. Water (3 mL) was added slowly at 0° C. and evaporated to a paste. Water was added and the mixture extracted with dichloromethane. The organic phase was washed with water, dried and evaporated to afford the title compound (826 mg, 75%). 1H NMR (400 MHz, CDCl3) δ 8.22 (s, 1H), 7.34 (d, J=7.7 Hz, 1H), 7.01 (t, J=7.6 Hz, 1H), 6.96 (d, J=6.8 Hz, 1H), 3.87 (s, 2H), 2.79 (q, J=7.5 Hz, 2H), 2.45 (s, 3H), 2.24 (s, 3H), 1.31 (t, J=7.6 Hz, 3H)

1. temperatureThe mixture was warmed to rt
2. stirringstirred overnight
3. customevaporated to a paste
4. additionWater was added
5. extractionthe mixture extracted with dichloromethane
6. washThe organic phase was washed with water
7. customdried
8. customevaporated