4-Aminopyridine → HCID 178469618, compound

Participants

Reaction Steps

4-Aminopyridine (15.84 g) and diethyl ethoxymethylenemalonate (34.3 ml) were heated at 110° C. then allowed to stand for 16 h at room temperture. The resulting solid was collected by filtration, washed wtih diethyl ether then pentane and dried in vacuo. A sample of the resulting enamine (10.0 g) was added portionwise to refluxing Dowtherm A (400 ml ). After heating for a further 0.25 h the reaction mixture was cooled then diluted with pentane (400 ml). The precipitated solid was collected by filtration and washed wtih diethyl ether to afford the title compound as a beige solide (3.84 g).

Provenance & Evidence