Citric Acid → HCID 57879483, compound

Participants

Reaction Conditions

Reaction Steps

0,087 mL of 4-bromobenzotrifluoride, 0.20 g of cesium carbonate, 30 mg of tetrabutylammonium bromide and 49 mg of polymer supported di(acetato)dicyclohexylphosphino palladium(II) were added to 2.0 mL of toluene solution containing 100 mg of tert-butyl 2-(benzamido)-4-vinylbenzoate at room temperature and stirred at 110° C. for 48 hours. After the reaction mixture was cooled to room temperature, ethyl acetate and 10% citric acid aqueous solution were added. The organic layer was separated, and the solvent was evaporated under reduced pressure after washed with 10% citric acid aqueous solution. 2.4 mL of tetrahydrofuran, 0.6 mL of water, 0.42 g of sodium formate, 0.44 mL of acetic acid and 50 mg of 3.9% palladium-carbon (ethylenediamine complex) were added to the obtained residue and stirred at 50° C. for 12 hours. The reaction mixture was cooled to room temperature and ethyl acetate and 10% citric acid aqueous solution were added. The organic layer was separated and the solvent was evaporated under reduced pressure. 10 mL of trifluoroacetic acid was added to the obtained residue and stirred at room temperature for 1 hour. The solvent was evaporated under reduced pressure and the obtained residue was purified with reversed-phase silica gel column chromatography [eluent; 60-100% acetonitrile/0.1% trifluoroacetic acid aqueous solution] to obtain 21 mg of 2-(benzamido)-4-(2-(4-(trifluoromethyl)phenyl)ethyl)benzoic acid as white solid.

Provenance & Evidence