反应详情

A solution of N1-isopropyl-2-propyl-1H-imidazo[4,5-c]quinoline-1,4-diamine (0.59 g, 2.1 mmol) in 15 mL of trifluoroacetic acid was treated with platinum(IV) oxide (0.55 g, 2.4 mmol) and shaken under an atmosphere of hydrogen (3.8×105 Pa). After 6 days, the reaction mixture was filtered through a pad of CELITE filter agent and rinsed with a mixture of 85:15:0.1 CHCl3:MeOH:TFA until the filtrate ran clear. The filtrate was concentrated under reduced pressure to yield a white foam. The material was suspended in water and treated with 50% NaOH solution until the pH reached 13. A white solid precipitated and was triturated in the basic mixture for 1 h. The white solid was collected by vacuum filtration. The solid was purified by chromatography (SiO2, 95:5:0.1 CHCl3:MeOH:NH4OH) to yield 0.23 g of N1-isopropyl-2-propyl-6,7,8,9-tetrahydro-1H-imidazo[4,5-c]quinoline-1,4-diamine as a white solid.

1. filtrationthe reaction mixture was filtered through a pad of CELITE
2. filtrationfilter agent
3. washrinsed with a mixture of 85:15:0.1 CHCl3
4. concentrationThe filtrate was concentrated under reduced pressure
5. customto yield a white foam
6. customA white solid precipitated
7. customwas triturated in the basic mixture for 1 h
8. filtrationThe white solid was collected by vacuum filtration
9. customThe solid was purified by chromatography (SiO2, 95:5:0.1 CHCl3:MeOH:NH4OH)