Water → HCID 69935106, compound

Participants

Reaction Conditions

Reaction Steps

2-[2-(Azidomethyl)phenyl]-5-{[4-(1H-pyrazol-1-yl)phenyl]methyl}-2,5-dihydro-3H-pyrazolo[4,3-c]quinolin-3-one (Example 661, 92 mg, 0.19 mmol) was dissolved in tetrahydrofuran (6 mL) and cooled to 0° C. Trimethylphosphine (0.97 mL, 1 M tetrahydrofuran solution, 0.97 mmol, 5 equiv) was added, the ice bath removed and the mixture was warmed to ambient temperature and stirred for 2 hours. The mixture was treated with sodium hydroxide (1.9 mL, 1 M aqueous, 10 equiv) and stirred for an additional 1 hour. The mixture was poured into water and extracted with chloroform (4×150 mL). The combined organic extracts were dried with sodium sulfate, filtered and concentrated in vacuo. The residue was purified by silica gel gradient chromatography (100:0 to 85:15; dichloromethane:methanol containing 10% ammonium hydroxide), providing the titled compound: 1H-NMR (400 MHz, d6-DMSO, hydrochloride salt) δ 9.27 (1H, s), 8.47 (1H, d, J=2.6 Hz), 8.33 (1H, dd, J=7.9, 1.4 Hz), 8.36-8.27 (3H, br s), 7.86-7.82 (3H, m), 7.73 (1H, d, J=1.5 Hz), 7.70-7.64 (3H, m), 7.60-7.55 (2H, m), 7.52-7.47 (3H, m), 6.54 (1H, m), 5.83 (2H, s), 4.04 (2H, q, J=5.6 Hz) ppm; high resolution mass spectrometry (ES+) m/z 447.1911 [(M+H)+; calculated for C27H23N6O: 447.1928].

Provenance & Evidence