4-Piperidineethanol → N-(7-(4-(2-hydroxyethyl)piperidin-1-yl)-2-methylpyrazolo[1,5-a]pyrimidin-5-yl)-4-(2-hydroxypropan-2-yl)benzamide

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A solution of N-(7-chloro-2-methylpyrazolo[1,5-a]pyrimidin-5-yl)-4-(2-hydroxypropan-2-yl)benzamide (2F, 86 mg, 0.25 mmol) and 2-(piperidin-4-yl)ethanol (100 mg, 0.75 mmol) in DMF (1.0 mL) was stirred at 100° C. for 2 h. After cooling to room temperature, the mixture was diluted with a few drops of DMSO and methanol, and was then purified by preparatory HPLC (30-35% MeCN/H2O gradient+0.01% TFA). Lyophilization of the combined fractions gave the titled compound as a white solid (63.9 mg, 58%). Melting point (234.0-234.1° C.). 1H NMR (DMSO-d6) δ: 10.93 (s, 1H), 8.00 (d, J=8.6 Hz, 2H), 7.61 (d, J=8.6 Hz, 2H), 7.20 (s, 1H), 6.20 (s, 1H), 4.51 (d, J=12.6 Hz, 2H), 3.50 (t, J=6.4 Hz, 2H), 3.07 (t, J=11.5 Hz, 2H), 2.38 (s, 3H), 1.84 (d, J=12.9 Hz, 2H), 1.68-1.81 (m, 1H), 1.46 (s, 6H), 1.41-1.45 (m, 2H), 1.29-1.41 (m, 2H); ESI-MS: m/z 438.3 (M+H)+.

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