Trifluoroacetic acid → 2-(6-Fluoro-1H-benzo[d]imidazol-1-yl)-9-(tetrahydro-2H-pyran-4-yl)-9H-purine

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The title compound as a TFA salt was synthesized from tert-butyl 4-fluoro-2-(5-nitro-4-(tetrahydro-2H-pyran-4-ylamino)pyrimidin-2-ylamino)phenylcarbamate via the procedure described in Example 15. 1H NMR (300 MHz, CDCl3): δ 9.73 (s, 1H), 9.29 (s, 1H), 8.5-8.6 (m, 1H), 8.40 (s, 1H), 7.9-8.1 (m, 1H), 7.3-7.4 (m, 1H), 4.8-5.0 (m, 1H), 4.2-4.4 (m, 2H), 3.7-3.8 (m, 2H), 3.05 (d, 1H), 2.2-2.4 (m, 3H). 19F NMR: δ −112.4.

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