Hydrazine hydrate (1:1) → 6-cyclopropyl-N-(6-(hydrazinecarbonyl)pyridin-2-yl)-3,4'-bipyridine-2'-carboxamide

참여 물질

반응 단계

The methyl 6-(6-cyclopropyl-3,4′-bipyridine-2′-carboxamido)picolinate from the previous step were suspended in ethanol (20 mL), hydrazine hydrate (700 μL, 14.4 mmol) was added, and the reaction was heated to reflux for 4 hours. The reaction mixture was concentrated and the resultant solids were suspended in acetronitrile and collected by filtration. The solids were washed with acetonitrile (2×100 mL) and diethyl ether (2×100 mL), and dried under reduced pressure to afford 1.21 g (47% yield) of 6-cyclopropyl-N-(6-(hydrazinecarbonyl)pyridin-2-yl)-3,4′-bipyridine-2′-carboxamide as a white solid.

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