反应详情

A solution of sodium hydroxide (250 mg, 6.25 mmol) in water (5 mL) was added to a solution of benzoic acid 5-{[(4-cyano-phenyl)-[1,2,4]triazol-4-yl-amino]methyl}-2-fluoro-phenyl ester (CAB02147, 958 mg, 2.32 mmol) in methanol (10 mL). The solution was heated to reflux for 5 minutes and concentrated under reduced pressure. Water (10 mL) was added and the milky suspension was neutralised (pH 7-8) with 2N hydrochloric acid. The white precipitate was filtered off, washed with a small amount of water (5 mL) and dried under high vacuum. Yield: 476 mg (66%). 1H-NMR (400 MHz, d6-DMSO) δ=4.95 (s, 2H), 6.70 (ddd, J=11.4, 8.4, 2.4 Hz, 1H), 6.75 (d, J=9.0 Hz, 2H), 6.84 (dd, J=8.4, 2.4 Hz, 1H), 7.06 (dd, J=11.3, 8.4 Hz, 1H), 7.76 (d, J=9.0 Hz, 2H), 8.75 (s, 2H), 9.90 (s, 1H, —OH). LRMS (FAB+): 310.1 (100, [M+H]+).

1. temperatureThe solution was heated
2. temperatureto reflux for 5 minutes
3. concentrationconcentrated under reduced pressure
4. additionWater (10 mL) was added
5. filtrationThe white precipitate was filtered off
6. washwashed with a small amount of water (5 mL)
7. customdried under high vacuum