反应详情

温度

110 °C

In a Parr pressure reactor 3-(8-chloro-1-iodo-imidazo[1,5-a]pyrazin-3-yl)-cyclobutanol (4.159 g, 0.0119 mol) was dissolved with 2.0M ammonia in isopropyl alcohol (40 mL). The mixture was cooled to −20° C. and saturated with ammonia. The reaction was heated at 110° C. for 63 h at which point it was cooled and concentrated in vacuo. The crude product was purified using HPFC Jones 25 g silica gel column eluting with 5-8% MeOH: CH2Cl2 to yield the title compounds; MS (ES+): m/z 330.88 (100) [MH−], 331.89 (10) [MH++]; HPLC: tR=0.48 min (OpenLynx, polar—5 min); 1H NMR (CDCl3, 400 MHz) δ 2.55-2.76 (m, 2 H) 3.06-3.22 (m, 2 H) 3.32-3.50 (m, 1 H) 4.51-4.69 (m, 1 H) 6.15 (br. s., 2 H) 7.24 (d, J=5.05 Hz, 1 H) 7.39 (d, J=5.05 Hz, 1 H).

1. temperaturewas cooled
2. concentrationconcentrated in vacuo
3. customThe crude product was purified
4. washeluting with 5-8% MeOH