2-(Dimethylamino)acetyl chloride hydrochloride → N-(6-iodoimidazo[1,2-b]pyridazin-2-yl)-N2,N2-dimethylglycinamide

関与物質

反応手順

To a solution of 6-iodoimidazo[1,2-b]pyridazin-2-amine (1040 mg, 4.0 mmol) in N-methylpyrrolidone (5.0 mL) was added dimethylaminoacetyl chloride hydrochloride (948 mg, 6.0 mmol), and the mixture was stirred at room temperature for 6 hr. The reaction mixture was diluted with 1N aqueous sodium hydroxide solution, and extracted with ethyl acetate. The organic layer was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate/methanol=100/0→70/30), and precipitated from diisopropyl ether to give the title compound (1019 mg, 74%) as a pale-yellow powder.

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