6-Aminonicotinic acid → HCID 54352395, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 6-aminopyridine-3-carboxylic acid (4.24 g), N-hydroxybenzotriazole (5.13 g), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (6.44 g) in N,N-dimethylformamide (100 ml) was stirred at 0° C. for 10 minutes. A solution of 4-ethyl-2,4-hexadien-1-ylamine (4.24 g) in N,N-dimethylformamide (50 ml) was added dropwise to the mixture over a period of 10 minutes and 4-dimethylaminopyridine (4.0 g) was added to the mixture. The mixture was stirred at 0° C. for 2 hours and then at room temperature overnight. The reaction mixture was diluted with aqueous sodium hydrogen carbonate solution and extracted three times with ethyl acetate. The extract was washed with aqueous sodium hydrogen carbonate solution and brine, dried over anhydrous magnesium sulfate, and evaporated in vacuo. The residue was chromatographed on silica gel (4% methanol-chloroform) to give N-(4-ethyl-2,4-hexadien-1-yl)-6-amino-3-pyridinecarboxamide (5.7 g).

Provenance & Evidence