反应详情

3,5-Difluorobenzaldehyde (2.0 mL, 18.24 mmol), pyrrolidine (1.8 mL, 21.56 mmol), and sodium triacetoxyborohydride (5.8 g, 27.4 mmol) were stirred in THF (50 mL) for 16 h at room temperature. Saturated aqueous NaHCO3 (30 mL) was added and after stirring for 30 min, EtOAc (50 mL) was added. The organic phase was separated and washed with brine, dried over MgSO4 and concentrated to afford 2.65 g (74%) of 1-(3,5-difluorobenzyl)pyrrolidine as a slightly cloudy oil: 1H NMR (CDCl3) δ 6.88-6.83 (m, 1H), 6.68-6.63 (m, 2H), 3.59 (s, 2H), 2.53-2.48 (m, 4H), 1.80-1.77 (m, 4H).

1. customThe organic phase was separated
2. washwashed with brine
3. dry with materialdried over MgSO4
4. concentrationconcentrated