[F:1][C:2]([F:16])([F:15])[C:3]1[C:8]([CH:9]([NH:13][CH3:14])[CH:10]([CH3:12])[CH3:11])=[CH:7][N:6]=[CH:5][N:4]=1.C(=O)([O-])[O-].[K+].[K+].[C:23]1([CH2:29][C:30](Cl)=[O:31])[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1.O>C(#N)C>[CH3:14][N:13]([CH:9]([C:8]1[C:3]([C:2]([F:1])([F:15])[F:16])=[N:4][CH:5]=[N:6][CH:7]=1)[CH:10]([CH3:12])[CH3:11])[C:30](=[O:31])[CH2:29][C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=16 g (26 mmol) of 4-trifluoromethyl-5-[1-(N-methylamino)-2-methylpropyl]pyrimidine and 3.6 g (26 mmol) of potassium carbonate were dissolved in 150 ml of acetonitrile, and 4 g (26 mmol) of phenylacetyl chloride was dropwise added, followed by stirring at room temperature for 3 hours. To the reaction solution, 200 ml of water was added, followed by extraction with ethyl acetate. The obtained organic layer was washed with water and then dried over anhydrous magnesium sulfate. Ethyl acetate was distilled off under reduced pressure, and the obtained crude crystals were washed with n-hexane to obtain 7.7 g (yield: 85%) of N-methyl-N-[2-methyl-1-(4-trifluoromethylpyrimidin-5-yl)propyl]phenylacetamide as colorless transparent crystals (melting point: 106-109° C.).
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