反应详情

Acetic acid (0.05 ml) and 3,3-dimethylbutyraldehyde (0.024 ml, 0.19 mmol) were added to a solution of (3-methyl-4,10-dihydro-3H-2,3,4,9-tetraaza-benzo[f]azulen-9-yl)-[3-methyl-4-(3-piperidin-4-yl-propoxy)-phenyl]-methanone hydrochloride from Example E68.5 (60 mg, 0.12 mmol) in methanol (2.45 ml) and triethylamine (0.026 ml, 0.19 mmol). The mixture was stirred at room temperature for 1 h then sodium triacetoxyborohydride (40 mg, 0.19 mmol) was added. The mixture was stirred at room temperature for 18 h, diluted with dichloromethane, washed with saturated NaHCO3 then brine, dried and concentrated in vacuo. The residue was purified by preparative HPLC (eluant; 0.5% 35% ammonia:9.5% methanol:90% dichloromethane) to give a white fluffy solid identified as the title compound (33 mg, 48%).

1. stirringThe mixture was stirred at room temperature for 18 h
2. washwashed with saturated NaHCO3
3. dry with materialbrine, dried
4. concentrationconcentrated in vacuo
5. customThe residue was purified by preparative HPLC (eluant; 0.5% 35% ammonia:9.5% methanol:90% dichloromethane)
6. customto give a white fluffy solid