0.13 g of potassium carbonate and 0.10 mL of (2-bromoethyl)benzene were added to 2 mL of N-dimethylformamide solution containing 0.13 g of methyl 2-(benzamido)-4-hydroxybenzoate, and stirred at room temperature for 3 hours. 0.10 mL of (2-bromoethyl)benzene was added to the reaction mixture and stirred at 50° C. for 4 hours and at 80° C. for 3 hours. After the reaction mixture was cooled to room temperature, 0.10 g of potassium carbonate and 0.10 mL of (2-bromoethyl)benzene were added and stirred at 80° C. for 2 hours and 30 minutes. After the reaction mixture was cooled to room temperature, ethyl acetate and 1.0 mol/b hydrochloric acid were added. The organic layer was separated and dried over anhydrous magnesium sulfate after washed with a saturated sodium chloride aqueous solution, and the solvent was evaporated under reduced pressure. The obtained residue was purified with silica gel column chromatography [eluent; hexane:ethyl acetate=8:1] to obtain 0.13 g of methyl 2-(benzamido)-4-(phenethyloxy)benzoate as colorless oil.
