Hydrochloric Acid → HCID 72703519, compound

Participants

Reaction Conditions

Reaction Steps

6-(2-fluoro-4-pyridyl)pyrido[3,2-d]pyrimidin-4-amine (50 mg, 0.21 mmol) 1 was treated with hydrogen chloride (4 mol/L) in 1,4-dioxane. The mixture was heated to 80° C. for 1 hour. Cooled to room temperature and basified with 4 N NaOH. Yellow precipitate was collected, and purified with Prep HPLC, 30 mg of 4-(4-aminopyrido[3,2-d]pyrimidin-6-yl)pyridin-2(1H)-one 2 was obtained (yield 60%). LC/MS (ESI+): m/z 240 (M+H). 1H NMR (400 MHz, DMSO) δ 8.39 (d, J=8.7 Hz, 1H), 8.18 (s, 1H), 8.15 (d, J=8.6 Hz, 1H), 7.52 (d, J=6.9 Hz, 1H), 7.11 (d, J=1.6 Hz, 1H), 7.00 (dd, J=6.9, 1.8 Hz, 1H).

Provenance & Evidence