Ethanolamine → 2-[(6-Chloropyridazin-3-yl)oxy]ethan-1-amine--hydrogen chloride (1/1)

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Reaction Steps

To a suspension of 4.2 g of 61% sodium hydride in 100 ml of benzene was added dropwise 6.2 g of 2-aminoethanol at room temperature. Then, 15 g of 3,6-dichloropyridazine was added, and the mixture was refluxed for 1 hour. After cooling, the reaction mixture was washed with water, and dried over magnesium sulfate. After evaporating the solvent, the residue was treated with hydrogen chrolide-ether solution to give 5.73 g of 3-(2-aminoethoxy)-6-chloropyridazine hydrochloride as crystals.

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