1-Benzylpiperazine → HCID 68525626, compound

Participants

Reaction Steps

To a solution of 1-{4-[5-(3,4-dichlorobenzoylamino)pyridin-2-yloxy]benzoyl}piperidine-4-carboxylic acid (4.5 g, 8.8 mmol) in DMF (88 mL) were added 1-benzylpiperazine (1.83 mL, 10.5 mmol), 1-hydroxybenzotriazole monohydrate (1.61 g, 10.5 mmol) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (2.02 g, 10.5 mmol) under ice cooling, and the resulting solution was stirred overnight at room temperature. To this reaction solution was added a saturated sodium bicarbonate solution, and the resulting solution was extracted with ethyl acetate. The ethyl acetate layer was washed with a saturated sodium bicarbonate solution and brine, dried over anhydrous magnesium sulfate, and evaporated. The residue was recrystallized from isopropyl alcohol (700 mL), to thereby yield 3.2 g of the title compound.

Provenance & Evidence