Water → 4-[5-Acetyl-3,6-dimethyl-2-oxo-1-(3-trifluoromethyl-phenyl)-1,2,3,4-tetrahydro-pyrimidin-4-yl]-3-bromo-benzonitrile

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Reaction Steps

Methyliodide (c=2 mol/L, 3.24 mL, 6.48 mmol) is added to a suspension of 4-[5-acetyl-6-methyl-2-oxo-1-(3-trifluoromethyl-phenyl)-1,2,3,4-tetrahydro-pyrimidin-4-yl]-3-bromo-benzonitrile (intermediate 3) (2.48 g, 5.18 mmol) and cesium carbonate (2.20 g, 6.74 mmol) in N,N-dimethylformamide (50.0 mL). The reaction mixture is stirred at room temperature overnight. Water and ethyl acetate are added and the phases are separated. The aqueous phase is extracted twice with ethyl acetate and the combined organic phases are washed with saturated sodium chloride solution, dried over MgSO4 and concentrated. The residue is purified by reversed phase HPLC. Yield: 2.64 g. ESI mass spectrum: [(79Br)-M+H]+=492, [(81Br)-M+H]+=494; Retention time HPLC: 1.06 min (HPLC method Z018_S04).

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