1,4-Dioxane → HCID 21957378, compound

Participants

Reaction Steps

1 g of 3-amino-2-phenyl-4-pyridinecarbonitrile was heated to reflux for 3.5 hours in 20 ml of water and 10 ml of dioxan in the presence of 4 g of Amberlite lRA-400-OH (basic form). The resin was removed by filtration and the filtrate was evaporated. The residue was chromatographed on silica gel using methanol/ethyl acetate (1:19) for the elution and the product was recrystallized from ethyl acetate/petroleum ether to yield 900 mg of 3-amino-2-phenyl-4-pyridinecarboxamide of melting point 163°-164° C.

Provenance & Evidence