Benzoylacetone → HCID 178422627, compound

Participants

Reaction Steps

To a solution of 1-phenylbutane-1,3-dione (5.0 g, 30.8 mmol) in ethanol (50 mL), was added hydrazine hydrate (1.54 g, 30.8 mmol) at ambient temperature. The reaction was refluxed for 5 h. After cooling, the reaction was concentrated under reduced pressure and extracted with ethyl acetate. The extract was dried over MgSO4 and concentrated under reduced pressure. The residue was added 10% ethyl acetate in hexane. The precipitate was filtered and washed with hexane. The white solid was dried in air to give the title compound (3.9 g). LCMS m/z=159.3 [M+H]+; 1H NMR (400 MHz, DMSO-d6) δ ppm 2.25 (s, 3H), 6.65 (s, 1H), 7.34 (m, 1H), 7.42 (m, 2H), 7.82 (m, 2H).

Provenance & Evidence