Ethanamine, 2,2,2-trifluoro- → 2-(2,2,2-Trifluoroethylamino)-4-(4-fluoro-2-methylphenyl)-8-(2,6-difluorophenyl)-8H-pyrido[2,3-d]pyrimidin-7-one

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The product of Example 48 (300 mg, 0.67 mmol) and trifluoroethylamine (300 mg, 3 mmol) were dissolved in THE (10 ml) and sealed in a vial under Ar. The mixture was heated in an oil bath to 60° for 4 days. The solvents were removed in vacuo, and the residue was flash chromatographed with 60-90% CH2Cl2/hexane. Recrystallization from CH2Cl2/hexane gave the title compound as a white crystalline solid. mp 195-196°, LC MS m/z=465(MH+) Retention time=2.38 min.

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