1-Hydroxybenzotriazole → HCID 57505678, compound

Participants

Reaction Steps

To a solution of N-[6-(3-aminophenoxy)imidazo[1,2-b]pyridazin-2-yl]cyclopropanecarboxamide (100 mg, 0.32 mmol) in N,N-dimethylformamide (6.0 mL) were added 4-chloro-3-(trifluoromethyl)benzoic acid (73 mg, 0.32 mmol), N-[3-(dimethylamino)propyl]-N′-ethylcarbodiimide hydrochloride (65 mg, 0.34 mmol) and 1-hydroxybenzotriazole (46 mg, 0.34 mmol), and the mixture was stirred at room temperature overnight. The reaction mixture was diluted with water and extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, and filtrated. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate/hexane=30/70→80/20) and precipitated from ethyl acetate/diisopropyl ether to give the title compound (130 mg, 77%) as a white powder.

Provenance & Evidence