Dimethylformamide → 2-Acetoxy-1-(naphth-1-yl)-1-propanone

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-bromo-1-naphthalen-1-yl-propan-1-one (20 g), sodium acetate (7.8 g) and N,N-dimethylformamide (300 mL) was heated at 80° C. for 18 hours. After cooling to room temperature the N,N-dimethylformamide was removed under reduced pressure and the resulting residue was partitioned between dichloromethane (300 mL) and water (300 mL). The organic phase was washed with water (300 mL), brine (300 mL), dried over magnesium sulfate, filtered and the solvent removed under reduced pressure to afford acetic acid 1-naphthalen-1-yl-2-oxo-propyl ester and acetic acid 1-methyl-2-naphthalen-1-yl-2-oxo-ethyl ester (2:1 mixture) (9.0 g, 49%) as a brown oil, 1H NMR (CDCl3): 1.45 (3H, d, J=7.0 Hz), 2.05 (3H, s), 2.15 (3H, s), 2.2 (3H, s), 5.95 (1H, q, J=7.0 Hz), 6.65 (1H, s), 7.45-7.60 (7H, m), 7.85-7.90 (4H, m), 8.0 (1H, d, J=8.1 Hz), 8.1 (1H, d, J=8.3 Hz), 8.35 (1H, d, J=8.6 Hz).

Provenance & Evidence