Hydrochloric Acid → 5-(1-methyl-1H-pyrazol-4-yl)-3-phenyl-1H-pyrazolo[3,4-c]pyridine

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Reaction Conditions

Reaction Steps

To a stirred solution of 5-(1-methyl-1H-pyrazol-4-yl)-3-phenyl-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-c]pyridine (54.5 mg, 0.152 mmol) in MeOH (8 mL) was added 6 M HCl in water. The reaction mixture was stirred at 60° C. under N2 for 16 h. The reaction mixture was cooled to room temperature. Volatile solvent was removed under reduced pressure. The crude was redissolved in EtOAc. The organic layer was washed with saturated aqueous sodium bicarbonate solution, water and brine, dried over Na2SO4, filtered, and evaporated in vacuo. Crystallization from DCM-heptanes afforded 133 as a solid (40 mg, 95.8%). 1H NMR (400 MHz, DMSO) δ 13.71 (broad s, 1H), 9.04 (s, 1H), 8.32 (s, 1H), 8.24 (s, 1H), 8.09 (d, J=7.3 Hz, 3H), 7.55 (t, J=7.5 Hz, 2H), 7.44 (t, J=7.4 Hz, 1H), 3.90 (s, 3H). LC/MS: m/z 276.1 [M+1]

Provenance & Evidence