4-Bromophenol → 1-Bromo-4-(2,2,2-trifluoroethoxy)benzene

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of trifluoroethyl tosylate (1.5 g, 5.8 mmol) in DMF (20 mL) was added K2CO3 (4 g, 29.4 mmol) followed by p-bromo phenol (1.1 g, 6.46 mmol) at RT under an inert atmosphere. The reaction mixture was stirred at 120° C. for 6 h. The volatiles were evaporated under reduced pressure; the residue was diluted with water (5 mL) and extracted with EtOAc (3×30 mL). The organic layer was washed with water and brine, was dried over anhydrous Na2SO4, was filtered and was concentrated in vacuo. The crude compound was purified by silica gel column chromatography eluting with 5% EtOAc/hexane to afford the desired product (0.8 g, 3.13 mmol, 53.3%) as semi solid. 1H NMR (200 MHz, CDCl3): δ 7.44-7.38 (m, 2H), 6.86-6.80 (m, 2H), 4.38-4.25 (m, 2H).

Provenance & Evidence