Trifluoroacetic acid → HCID 53373294, compound

Participants

Reaction Steps

To a solution of {1-(1-{[6-(hydroxymethyl)-2-(trifluoromethyl)pyrimidin-4-yl]carbonyl}piperidin-4-yl)-3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile (0.030 g, 0.043 mmol, from Step E) and triethylamine (0.015 mL, 0.11 mmol) in methylene chloride (1 mL) at 0° C. was added methanesulfonyl chloride (0.006 mL, 0.08 mmol). The reaction was allowed to warm to room temperature immediately after addition of mesyl chloride (MsCl). When mesylate formation was confirmed to be complete, the solution of mesylate was added to a mixture of pyrrolidine (0.017 mL, 0.20 mmol, Aldrich) and a few drops of triethylamine in DCM (0.2 mL). The displacement reaction was heated to 40° C. for 30 minutes. The reaction was cooled to room temperature and trifluoroacetic acid (1 mL) was added. After stirring for 1 hour, the solvents were removed in vacuo and replaced with methanol (1 mL) and ethylenediamine (0.2 mL). After stirring for 30 minutes, the product was purified by preparative HPLC-MS (Waters SunFire C18, 5 um particle size, 30×100 mm, eluting with a gradient of 5-23% MeCN in H2O containing 0.1% TFA over 12 minutes). Yield: 0.012 g (25%); LC-MS: 620.2 (M+H)+. 1H NMR (300 MHz, CD3OD): δ 9.10 (s, 1H), 8.90 (s, 1H), 8.59 (s, 1H), 8.01 (s, 1H), 7.83 (d, 1H), 7.29 (d, 1H), 4.95 (d, 2H), 4.85 (s, 2H), 4.77-4.66 (m, 3H), 4.02 (d, 1H), 3.95-3.15 (m, 8H), 3.12-2.99 (m, 1H), 2.31-2.03 (m, 6H), 1.77-1.51 (m, 2H). 19F NMR (300 MHz, CD3OD): δ −72.21 (s, 3F), −77.61 (s, 12F).

Provenance & Evidence