反应详情

温度

0 °C

Under nitrogen atmosphere, at 0° C., to a stirring mixture of LiAlH4 (2.0 M THF solution, 3.92 mL, 7.84 mmol) in dry THF (6.0 mL), commercially available 4-(3-thienyl)-benzoic acid (0.4 g, 1.96 mmol) in dry THF (30 mL) was added dropwise. The mixture was left to react at rt for 4 h, then at 0° C. H2O (0.30 mL), 3.0 M KOH solution (0.30 mL) and H2O (1.0 mL) were very slowly added. The mixture was stirred for 1 h at 0° C., filtered to remove the solid residue, and the organic phase dried over Na2SO4. The organic solution was again filtered and concentrated to dryness, affording the title compound (0.222 g, 65%), which was used in the next step without any further purification. 1H NMR (DMSO-d6): δ 4.51 (d, J=5.75 Hz, 2H), 5.17 (t, J=5.75 Hz, 1H), 7.35 (d, J=8.1 Hz, 2H), 7.52-7.57 (m, 1H), 7.63 (dd, J=2.9, 5.0 Hz, 1H), 7.67 (d, J=8.1 Hz, 2H), 7.81-7.86 (m, 1H).

1. additionwas added dropwise
2. waitThe mixture was left
3. customto react at rt for 4 h
4. customat 0° C
5. filtrationfiltered
6. customto remove the solid residue
7. dry with materialthe organic phase dried over Na2SO4
8. filtrationThe organic solution was again filtered
9. concentrationconcentrated to dryness