Hydrochloric Acid → 3-(5-Bromo-8-fluoroisoquinolin-3-yl)-5-(1-piperidin-4-yl-1H-pyrazol-4-yl)-pyridin-2-ylamine trihydrochloride

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Reaction Steps

To a solution of 4-{4-[6-amino-5-(5-bromo-8-fluoroisoquinolin-3-yl)-pyridin-3-yl]-pyrazol-1-yl}-piperidine-1-carboxylic acid tert-butyl ester (82 mg, 0.14 mmol) in DCM (3.0 mL) was added 1.0 M of HCl in Et2O (3.0 mL, 3.0 mmol), and the mixture was stirred at ambient temperature for 1 h. Almost immediately a pale yellow solid precipitated. The solvents were evaporated, and the residue was transferred into a vial and dried in vacuo overnight, yielding the title compound as yellow solid. 1H NMR (400 MHz, DMSO-d6): δ=2.09-2.28 (m, 4H), 3.03-3.16 (m, 2H), 3.39 (dd, J=13.8, 1.9 Hz, 2H), 4.47-4.58 (m, 1H), 7.61 (dd, J=9.8, 8.4 Hz, 1H), 8.12 (s, 1H), 8.23-8.32 (m, 2H), 8.42 (s, 1H), 8.46 (s, 1H), 8.48 (d, J=2.0 Hz, 1H), 8.71 (d, J=2.0 Hz, 1H), 9.01 (br. s., 1H), 9.16 (br. s., 1H), 9.65 (s, 1H). MS (ES+): m/z=466.73/468.63 [MH+]. HPLC: tR=1.88 min (ZQ2, polar—5 min).

Provenance & Evidence