反应详情

In a round bottom flask under nitrogen was combined 4-[4-(3-Azido-4-nitro-benzyl)-piperazin-1-yl]-2-(4-tert-butyl-phenyl)-1H-benzoimidazole (0.19 g, 0.37 mMol), methanol (20 mL), and 5% platinum on carbon (0.145 g, 0.037 mMol). A hydrogen balloon was attached, the flask evacuated, and a hydrogen atmosphere established. After stirring for four hours, the balloon was removed, the flask purged with nitrogen, and the reaction mixture filtered thru Celite with a large excess of methanol. The solution was concentrated to dryness on a rotary evaporator to yield 170 mg (100% yield) of 4-{4-[2-(4-tert-Butyl-phenyl)-1H-benzoimidazol-4-yl]-piperazin-1-ylmethyl}-benzene-1,2-diamine as a brown oil. LC/MS (Method A), rt=0.90 mins., purity=85.9%, calculated mass=454, [M+H]+=455, [M−H]−=453.

1. customIn a round bottom flask under nitrogen was combined
2. customthe flask evacuated
3. customthe balloon was removed
4. customthe flask purged with nitrogen
5. filtrationthe reaction mixture filtered thru Celite with a large excess of methanol
6. concentrationThe solution was concentrated to dryness on a rotary evaporator