Hydrochloric Acid → HCID 22221337, compound

Participants

Reaction Steps

To a solution of methyl 3-[5-(5-chloro-2-thienyl)-4-isoxazolyl]propionate (3.10 g) in tetrahydrofuran (80 ml) was gently added diisobutylaluminum hydride (1.5 M toluene solution, 17 ml) at 0° C., and the mixture was stirred at room temperature for 1 hr. The reaction mixture was poured into dilute hydrochloric acid, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried (MgSO4) and concentrated. The residue was subjected to silica gel column chromatography, and 3-[5-(5-chloro-2-thienyl)-4-isoxazolyl]propan-1-ol (2.02 g, yield 73%) was obtained as a colorless oil from a fraction eluted with ethyl acetate-hexane (1:1, volume ratio). NMR (CDCl3) δ: 1.41 (1H, br t, J=5 Hz), 1.8–2.0 (2H, m), 2.73 (2H, t, J=8 Hz), 3.73 (2H, td, J=6, 5 Hz), 6.98 (1H, d, J=4 Hz), 7.29 (1H, d, J=4 Hz), 8.17 (1H, s).

Provenance & Evidence