反应详情

To a solution of 3-(4-hydroxymethylphenoxy)propionic acid (4.00 g, 20.40 mmol) in THF (20 mL) is added a solution of LiAlH4 (10 mL, 1 M in THF). The mixture becomes warm and is diluted with THF (20 mL) before it is refluxed. After 1 and 2 h two further portions of LiAlH4 (2×10 mL, 1 M in THF) are added. The mixture is refluxed overnight, cooled to rt and carefully quenched by the addition of water (1.2 g), 15% aq. NaOH (1.2 g) and water (3.2 g). The white precipitate is filtered off, and the filtrate is evaporated and dried to give 3-(4-hydroxymethyl-phenoxy)-propan-1-ol. 1H NMR (D6-DMSO): δ 7.21-7.15 (m, 2H), 6.86-6.81 (m, 2H), 5.00 (t, J=5.9 Hz, 1H), 4.51 (t, J=5.3 Hz, 1H), 4.39 (d, J=5.3 Hz, 2H), 3.99 (t, J=6.4 Hz, 2H), 3.57-3.50 (m, 2H), 1.83 (p, J 0 6.4 Hz, 2H).

1. temperatureThe mixture becomes warm
2. temperatureis refluxed
3. temperatureThe mixture is refluxed overnight
4. customcarefully quenched by the addition of water (1.2 g), 15% aq. NaOH (1.2 g) and water (3.2 g)
5. filtrationThe white precipitate is filtered off
6. customthe filtrate is evaporated
7. customdried