Methanol → HCID 22220982, compound

Participants

Reaction Steps

A mixture of 3-[5-(3,4-difluorophenyl)-4-isoxazolyl]propionic acid (3.45 g), conc. sulfuric acid (0.1 ml) and methanol (100 ml) was refluxed for 4 hr. The reaction mixture was concentrated, water was added to the residue 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 methyl 3-[5-(3,4-difluorophenyl)-4-isoxazolyl]propionate (3.56 g, yield 98%) was obtained as a pale yellow oil from a fraction eluted with ethyl acetate-hexane (1:3, volume ratio). NMR (CDCl3) δ: 2.60–2.71 (2H, m), 2.92–3.03 (2H, m), 3.69 (3H, s), 7.22–7.65 (3H, m), 8.23 (1H, s).

Provenance & Evidence