2-Hydrazinopyridine → ethyl 5-amino-1-(pyridin-2-yl)-1H-pyrazole-4-carboxylate

Beteiligte Stoffe

Reaktionsschritte

Ethyl(ethoxymethylene)cyanoacetate, 19.5 g, was added in one portion to a solution of 2-hydrazinopyridine, 12.5 g, in 100 mL of absolute ethanol. The reaction was then heated at reflux for 21/2 hours and cooled. The solid which formed was collected by filtration and washed with absolute ethanol. After air-drying, the product weighed 22.6 g and melted at 92°-93° C.

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