反应详情

To a solution of 5-bromo-2-(2-ethylpiperidin-1-yl)benzaldehyde (10 g, 48.4 mmol) in methanol (100 mL) under nitrogen was added sodium borohydride (1.28 g, 48.4 mmol) at 0° C. in portions. The reaction mixture was stirred at RT for 1 hour, then evaporated to remove methanol. The resulting crude was taken up with water (100 mL) and extracted with EtOAc. The organic layer was washed with water, then dried (Na2SO4) and concentrated under reduced pressure to afford the title compound as a yellow oil (8.8 g, 88%). 1H NMR (DMSO-d6, 400 MHz) δ 7.55 (1H, s), 7.34-7.54 (1H, m), 7.08 (1H, d), 5.19 (1H, t), 4.62 (1H, d), 4.46 (1H, d), 2.77-2.84 (2H, m), 2.45 (1H, m), 1.74 (2H, t), 1.55 (2H, t), 1.33 (2H, m), 1.17 (2H, m), 0.62 (3H, t).

1. customevaporated
2. customto remove methanol
3. extractionextracted with EtOAc
4. washThe organic layer was washed with water
5. dry with materialdried (Na2SO4)
6. concentrationconcentrated under reduced pressure