反应详情

Palladium on charcoal (100 mg, 10% Pd) was added to a solution of 4-[(4-benzyloxy-3-trifluoromethyl-benzyl)-[1,2,4]triazol-4-yl-amino]-benzonitrile (CAB03054, 1.75 g, 3.89 mmol) in EtOH/THF/MeCN (50 mL/50 mL/30 mL). The mixture was stirred under hydrogen atmosphere (balloon) for 18 h at room temperature. The reaction mixture was filtered through celite and the clear colourless filtrate was concentrated under reduced pressure. The residue was suspended in 2-propanol (20 mL) and heated to reflux for 5 minutes. The white solid was filtered off after cooling to room temperature and dried under high vacuum. Yield: 1.31 g (94%). 1H-NMR (400 MHz, d6-DMSO) δ=4.98 (s, 2H), 6.78 (d, J=9.0 Hz, 2H), 6.91 (d, J=8.6 Hz, 1H), 7.31 (dd, J=8.6, 2.0 Hz, 1H), 7.39 (d, J=2.0 Hz, 1H), 7.76 (d, J=9.0 Hz, 2H), 8.74 (s, 2H), 10.66 (s, 1H, —OH).

1. filtrationThe reaction mixture was filtered through celite
2. concentrationthe clear colourless filtrate was concentrated under reduced pressure
3. temperatureheated
4. temperatureto reflux for 5 minutes
5. filtrationThe white solid was filtered off
6. temperatureafter cooling to room temperature
7. customdried under high vacuum