HCID 19596615, compound → HCID 19596640, compound

Participants

Reaction Steps

3-(2-(N-tert-butoxycarbonylamino)ethoxy)-5-(4-nitrophenyl)isoxazole (0.55 g) was dissolved in a mixture of acetic acid and water (9:1, 5.5 ml), and zinc powder (0.55 g) was added thereto at room temperature, followed by stirring of the resulting mixture at the same temperature for 2 hours. After the reaction, zinc powder was filtered off and the filtrate was extracted with ethyl acetate. The organic layer was washed with a saturated aqueous NaCl solution and dried over anhydrous magnesium sulfate. After filtration, the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane/ethyl acetate=2/1) to obtain the title compound (0.45 g, 90%) as a colorless powder.

Provenance & Evidence