Benzoic Acid → HCID 67330689, compound

Participants

Reaction Steps

To a solution of tert-butyl (rac.)-(3R,4R)-3-(ethylamino)-4-(3-hydroxyphenyl)piperidine-1-carboxylate (1.76 g) in methylene chloride (16 ml) were added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (1.37 g), N,N-dimethylaminopyridine (872 mg), triethylamine (995 μl), and benzoic acid (610 mg), and the mixture was stirred at room temperature for one hour. To the reaction mixture was added a saturated aqueous ammonium chloride solution, and the mixture was extracted with ethyl acetate. The organic layer was washed with a saturated aqueous ammonium chloride solution, a saturated aqueous sodium hydrogen carbonate solution, and a saturated aqueous sodium chloride solution, dried over magnesium sulfate, filtered, and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (the developing solvent: hexane/ethyl acetate=1/1) to give the title compound (968 mg).

Provenance & Evidence