Potassium Carbonate → Ethyl 4-(4-cyanophenyl)-6-methyl-2-[(4-pyridinylmethyl)sulfanyl]-1-[3-(trifluoro-methyl)phenyl]-1,4-dihydro-5-pyrimidinecarboxylate

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Reaction Steps

Ethyl 4-(4-cyanophenyl)-6-methyl-2-thioxo-1-[3-(trifluoromethyl)phenyl]-1,2,3,4-tetrahydro-5-pyrimidinecarboxylate (Example 3; 100 mg, 0.22 mmol), 4-(bromomethyl)pyridine hydrobromide (62.5 mg, 0.25 mmol), N,N,N-tributyl-1-butanaminium iodide (7 mg, 0.03 mmol) and potassium carbonate (65.2 mg, 0.47 mmol) are dissolved in 3 ml acetone and stirred at room temperature overnight. The solvent is removed in vacuo and the product is purified via preparative HPLC (RP18-column; eluent: acetonitrile-water, gradient 10:90 to 90:10).

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