Potassium Carbonate → 3-{4-[1-(4'-Trifluoromethoxy-biphenyl-4-yloxy)-heptyl]-benzoylamino}-propionic acid methyl ester

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Reaction Steps

3-{4-[1-(4-Bromo-phenoxyl)-heptyl]-benzoylamino}-propionic acid methyl ester (isomer 1, 100 mg, 0.21 mmol), potassium carbonate (85 mg, 0.63 mmol), 4-triflouromethoxylphenyl boronic acid (86 mg, 0.42 mmol) and tetrakis-(triphenylphosphine)palladium (24 mg, 0.021 mmol) are place in a flask. After the reaction is purged with N2 for several times, THF/H2O (20 ml/5 ml) is added. The resulting solution is refluxed overnight, concentrated and acidified by 1 N HCl (0.6 mL), extracted with ethyl acetate. Combined organic layers are washed with water and brine, dried over sodium sulfate, purified by reverse phase HPLC to give the title compound (40 mg). MS (ES): 526.2 [M−H]−.

Provenance & Evidence