反应详情

Lithium aluminum hydride (320 mg, 8.4 mmol) was slowly added to a solution of 5-(3-chloro-phenyl)-isoxazole-3-carboxylic acid ethyl ester (2.0 g, 8.4) in THF (100 ml) at r.t After 1 h, the reaction mixture was quenched with water and then extracted with EA. The organic layer was washed with water and brine, dried (Na2SO4), filtered, and concentrated. The resulting residue was then purified by column chromatography using 15-40% EA in hex. to afford the title compound (1.32 g, 75%,). 1H NMR: 7.78 (s, 1H), 7.68 (m, 1H), 7.43 (m, 2H), 6.63 (s, 1H), 4.84 (d, 2H), 2.23 (t, 1H).

1. customthe reaction mixture was quenched with water
2. extractionextracted with EA
3. washThe organic layer was washed with water and brine
4. dry with materialdried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated
7. customThe resulting residue was then purified by column chromatography