反应详情

Treat a solution of 3-bromo-2,5-bis-methoxymethoxy benzaldehyde (9.40 g, 30.6 mmol) in EtOH (200 mL) with sodium borohydride (1.16 g, 30.6 mmol). Stir the reaction for 2 hours at ambient temperature and pour into H2O (200 mL) and saturated NaHCO3 (100 mL). Extract the H2O with EtOAc (3×100 mL) and wash the combined extracts with H2O (100 mL) and brine (50 mL) then dry (MgSO4) and filter. Concentrate the filtrate to afford the title product (9.31 g, 99%) as an oil. 1H NMR (CDCl3) δ 3.20 (t, J=6.9 Hz, 1H), 3.47 (s, 3H), 3.64 (s, 3H), 4.60 (d, J=6.9 Hz, 2H), 5.08 (s, 2H), 5.13 (s, 2H), 7.02 (d, J=2.9 Hz, 1H), 7.23 (d, J=2.9 Hz, 1H).

1. customthe reaction for 2 hours at ambient temperature
2. extractionExtract the H2O with EtOAc (3×100 mL)
3. washwash the combined extracts with H2O (100 mL) and brine (50 mL)
4. dry with materialthen dry (MgSO4)
5. filtrationfilter
6. concentrationConcentrate the filtrate