Water → HCID 69560031, compound

Participants

Reaction Steps

(Diethylamino)sulphur trifluoride (150 mg, 0.95 mmol) was added to a stirred solution of 2-{4-[7-(1-methyl-1-triethylsilanyloxyethyl)-imidazo[1,2-α]pyrimidin-3-yl]pyrimidin-2-yl}propan-2-ol (Example 115, Step 1) (200 mg, 0.47 mmol) in 1,2-dichloroethane (5 ml) at room temperature under N2 and the reaction was stirred overnight. Water (20 ml) was added followed by NaHCO3 solution (20 ml) and then the organics were extracted with CH2Cl2 (3×50 ml) and concentrated under reduced pressure. The residue was purified by column chromatography on silica using 7% EtOH/EtOAc to yield 3-[2-(1-fluoro-1-methylethyl)pyrimidin-4-yl]-7-(1-methyl-1-triethylsilanyloxyethyl)imidazo[1,2-α]pyrimidine (60 mg, 30%): 1H NMR (400 MHz, CDCl3) δ 10.25 (1H, d, J 7.3), 8.71 (1H, d, J 5.5), 8.48 (1H, s), 7.60 (1H, d, J 7.2), 7.55 (1H, d, J 5.5), 1.87 (6H, d, J 21.6), 0.99 (9H, t, J 8.0), 0.68 (6H, q, J 8.0); m/z (ES+) 430 (M+H+).

Provenance & Evidence