反应详情

To a solution of methyl 4-(benzoxazol-2-yl)-benzoate (0.20 g, 0.8 mmol) in THF (8 mL) at −78° C. was added a solution of DEBAL-H (4.0 mL, 1.0 M in THF, 4.0 mmol). The reaction was allowed to warm to room temperature, stirred for 1 h and quenched with a saturated potassium sodium tartrate solution (15 mL). The biphasic mixture was stirred vigorously for 1 h, the phases separated and the organic layer dried (MgSO4), filtered and concentrated to give the title alcohol (0.16 g, 89%). 1H NMR (CDCl3) δ1.80 (t, 1H (OH)), 4.82 (d, 2H, J=6.0 Hz), 7.36 (m, 2H), 7.55 (d, 2H, J=8.4 Hz), 7.60 (m, 1H), 7.78 (m, 1H), 8.26 (d, 2H, J=8.4 Hz).

1. customquenched with a saturated potassium sodium tartrate solution (15 mL)
2. stirringThe biphasic mixture was stirred vigorously for 1 h
3. customthe phases separated
4. dry with materialthe organic layer dried (MgSO4)
5. filtrationfiltered
6. concentrationconcentrated