1,4-Diiodobutane → HCID 58166461, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of 4-amino-5-fluoropyrimidin-2-ol (0.50 g, 3.87 mmol) in acetonitrile (CH3CN; 20 mL) was added BSA (1.58 g, 7.75 mmol), and the mixture was heated to 70° C. for 1 h resulting in a clear solution. After cooling to room temperature, 1,4-diiodobutane (1.2 g, 3.87 mmol) was added, and the mixture was stirred for 16 h at room temperature and then at 70° C. for 3 h. The solvent was evaporated and the residue was purified by normal phase chromatography (24 g SiO2; gradient, 0 to 15% MeOH/CH2Cl2) to give an orange oil. The oil was dissolved in EtOAc and the solution was slowly cooled. The resulting solid was collected by filtration, washed with additional EtOAc, and dried to give 4-amino-5-fluoro-1-(4-iodobutyl)-1H-pyrimidin-2-one (0.52 g, 43%) as a tan solid: mp 181-184° C.; 1H NMR (400 MHz, DMSO-d6) δ 8.56 (s, 2H), 8.25 (d, J=6.7 Hz, 1H), 3.70 (t, J=6.7 Hz, 2H), 3.29 (t, J=6.7 Hz, 2H), 1.73 (m, 4H); ESIMS m/z 312 ([M+H]+).

Provenance & Evidence