Trifluoroacetic acid → 5-[6-Morpholin-4-yl-8-piperazin-1-yl-9-(2,2,2-trifluoroethyl)-9H-purin-2-yl]pyrimidin-2-amine trifluoroacetate

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tert-Butyl {5-[6-morpholin-4-yl-8-piperazin-1-yl-9-(2,2,2-trifluoroethyl)-9H-purin-2-yl]pyrimidin-2-yl}carbamate (1.18 g, 2.09 mmol) was dissolved in methylene chloride (10 ml) followed by the addition of trifluoroacetic acid (10 ml) with ice cooling and the resulting mixture was stirred at room temperature for 2 hours. The solvent was evaporated under reduced pressure followed by the addition of toluene and evaporated again under reduced pressure to give the title compound (1.5 g, 100%) as a yellow solid.

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