Phthalimide → HCID 178508461, compound

Participants

Reaction Steps

trans-{-4-[8-Amino-1-(2-phenylquinolin-7-yl)-imidazo[1,5-a]pyrazin-3-yl]-cyclohexyl}-methanol (290 mg, 0.47 mmol), phthalimide (82 mg, 0.56 mmol), and resin-bound triphenylphosphine (PS-Ph3P [Argonaut, 2.16 mmol/g]) (324 mg) were dissolved in 2.5 mL of THF, evacuated, placed under nitrogen atmosphere and charged with DIAD (0.11 mL, 0.56 mmol). After stirring for 16 h, the resin was filtered, washed with CH2Cl2 (5×) and concentrated to an orange-colored oil. The crude material was purified by silica gel column chromatography [Jones Flashmaster, 10 g/70 mL cartridge, eluting with 1% MeOH/CH2Cl2 to 2% ˜7N NH3 in MeOH/CH2Cl2] to afford the desired product as a yellow solid; 1H NMR (CDCl3, 400 MHz) δ 1.17-1.29 (m, 2H), 1.60-1.61 (m, 1H), 1.87-2.07 (m, 4H), 2.12-2.23 (m, 2H), 2.92-3.02 (m, 1H), 3.64 (d, 2H, J=6.8 Hz), 5.25 (s, 2H), 7.11 (d, 1H, J=5.6 Hz), 7.24-7.26 (m, 1H), 7.45-7.49 (m, 1H), 7.52-7.56 (m, 2H), 7.72-7.75 (m, 2H), 7.86-7.95 (m, 5H), 8.17-8.20 (m, 2H), 8.25 (d, 1H, J=8.8 Hz), 8.38-8.39 (m, 1H); MS (ES+): m/z 579.0 [MH+]; HPLC: tR=2.9 min (Micromass Platform II, nonpolar—5 min).

Provenance & Evidence