4-Bromophenyl-sulfonic acid-(4-hydroxybutyl)-amide (1 g) was dissolved in ethanol (8 mL) and toluene (8 mL). 4-Trifluoromethylphenyl boronic acid (1 g) was added, followed by 2 M Na2CO3 (8 mL). Tetrakis(triphenylphosphine) palladium (0.25 g) was added and the mixture heated to reflux under nitrogen for 3 hours with vigorous stirring. The organic solvents were evaporated and the residue dissolved in ethyl acetate (100 mL) and washed with water (100 mL) then saturated NaCl solution (100 mL). The organic phase was dried (Na2SO4), evaporated and the residue purified by column chromatography (ethyl acetate/petrol) to give the title compound as a white solid. δC (DMSO, 62.9 MHz): 25.9, 29.6, 42.6, 60.2, indistinct m, 140.4, 142.2 and 142.6. δH (DMSO, 250 MHz): 1.41 (4H, m), 2.77 (2H, m), 3.33 (2H, m), 4.39 (1H, t, NH), 7.83-7.94 (6 H, m) and 7.96 (2H, d, J 8.5).
