3,4-Dimethylbenzoic acid → HCID 68525737, compound

Participants

Reaction Steps

To a solution of ethyl 4-(5-aminopyridin-2-yloxy)benzoate (14.15 g, 54.8 mmol) in DMF (100 mL) were added 3,4-dimethylbenzoic acid (8.23 g, 54.8 mmol), 1-hydroxybenzotriazole monohydrate (8.4 g, 54.8 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (12.6 g, 65.7 mmol) under ice cooling, and then stirred for 30 minutes under ice cooling and for 17 hours at room temperature. The reaction solution was concentrated under reduced pressure. To the residue was added water (200 mL), and extracted with ethyl acetate (250 mL). The ethyl acetate layer was washed with a saturated sodium bicarbonate solution and brine, dried over anhydrous magnesium sulfate, and evaporated. The residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=2:1), to thereby yield 16.15 g of the title compound.

Provenance & Evidence