反应详情

To a stirred solution of ethyl 9H-β-carboline-3-carboxylate (440 mg, 1.83 mmol) in DMF (5 mL) under a nitrogen atmosphere was added NaH (73.3 mg, 60% in mineral oil, 1.83 mmol) portionwise, followed by 3-chloro-2,6-difluorobenzyl bromide (442 mg, 1.83 mmol). Stirring was continued for 22 hours at ambient temperature, water (30 mL) was then added to the mixture. The precipitate was filtered, washed with water and dried to give the title product (0.55 g, 68%). 1H NMR (400 MHz, CD3OD): δ 9.04 (1H, s), 8.86 (1H, s), 8.26 (1H, d, J=8 Hz), 6.98–7.69 (5H, m), 5.82 (2H, s), 4.44 (2H, q, J=8 Hz), 1.43 (3H, t, J=8 Hz).

1. filtrationThe precipitate was filtered
2. washwashed with water
3. customdried