3-Chloro-2-fluorobenzoic acid → 5-(4-((6-((1-tert-butyl-1H-pyrazol-5-yl)amino)pyridin-2-yl)methyl)-1-(3-chloro-2-fluorobenzoyl)piperidin-4-yl)-1,3,4-oxadiazol-2(3H)-one

Participants

Reaction Steps

To a solution of 40 mg of 5-(4-((6-((1-tert-butyl-1H-pyrazol-5-yl)amino)pyridin-2-yl)methyl)piperidin-4-yl)-1,3,4-oxadiazol-2(3H)-one dihydrochloride in 2 ml of pyridine were added 17.8 mg of 3-chloro-2-fluorobenzoic acid and 24.4 mg of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride at room temperature. The reaction mixture was stirred at room temperature overnight, followed by concentrating in vacuo. The reaction mixture was dissolved in ethyl acetate, and washed with water. The resulting ethyl acetate layer was dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated in vacuo. The resulting residue was purified by a silica gel column chromatography (eluent: hexane to ethyl acetate) to give the title compound as a pale yellow oil.

Provenance & Evidence