Acetic Anhydride → 4-Bromo-2-fluorophenethyl acetate

Participants

Reaction Steps

A solution of 2-(4-bromo-2-fluorophenyl)ethanol (3.01 mmol) in dichloromethane (5 mL) and pyridine (10 mL) was treated with 4-(dimethylamino)pyridine (0.151 mmol) and acetic anhydride (9.04 mmol). The reaction was stirred overnight at room temperature. At this point the reaction was diluted with dichloromethane (100 mL). The organic layer was washed three times with 1N aq HCl, once with saturated aq sodium bicarbonate, and once with brine. The organic layer was dried over sodium sulfate, filtered and concentrated in vacuo to afford the title compound as a pale beige oil (710 mg, 81% yield). 1H NMR (400 MHz, DMSO-d6) d ppm 1.96 (s, 3 H) 2.90 (t, J=6.44 Hz, 2 H) 4.20 (t, J=6.57 Hz, 2 H) 7.26-7.43 (m, 2 H) 7.51 (dd, J=9.73, 1.89 Hz, 1 H).

Provenance & Evidence