1,2-Dichloroethane → 9-phenyl-3-(2-pyrimidinyl)[1,2,4]triazolo[3,4-f]-1,6-naphthyridin-8(7H)-one

Participants

Reaction Conditions

Reaction Steps

To a mixture of 5-hydrazino-3-phenyl-1,6-naphthyridine-2(1H)-one (2-3) (1.4 g, 5.55 mmol), 2-pyrimidinecarboxylic acid (0.69 g, 5.55 mmol), HOBt (0.85 g, 5.55 mmol), and DIPEA (0.97 mL, 5.55 mmol) in DMF (50 mL) was added EDC (1.23 g, 6.66 mmol). After stirring for overnight, AcOH (5 mL) was added, and the mixture was heated under microwave irradiation at 150° C. for 15 minutes. The solvent was removed under reduced pressure, and the residue was diluted with MeOH, and added water. The resulting solid was collected by filtration to give 9-phenyl-3-(2-pyrimidinyl)[1,2,4]triazolo[3,4-f]-1,6-naphthyridin-8(7H)-one (2-4) as a colorless solid.

Provenance & Evidence