Sodium Iodide → 4-[4-(2-Benzyloxy-4-ethyl-phenoxy)-3-fluoro-phenoxy]-butyric acid ethyl ester

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-[2-(benzyloxy)-4-ethylphenoxy]-3-fluorophenol (0.30 mmol; 100 mg) in dry acetone (2 mL), under argon, were added potassium carbonate (0.35 mmol; 49 mg), NaI (0.06 mmol; 9 mg) and ethyl bromobutyrate (0.35 mmol; 51 μL). The reaction was stirred 14 hours at 60° C. Water (100 μL) and tetrabutylammonium hydroxyde (0.03 mmol; 8 mg) were added and the mixture was stirred 16 hours at 60° C. The reaction was hydrolysed with NH4Cl sat. (5 mL) and extracted with ethyl acetate (3*3 mL). Combined organic phases were dried over Na2SO4, concentrated in vacuo. The title compound (100 mg; 0.22 mmol; 75%) was obtained as a yellow oil, after purification by preparative TLC (cyclohexane/ethyl acetate: 7/3).

Provenance & Evidence