Potassium Iodide → Ethyl 3-methyl-2-{2-oxo-3-(4-(pyridin-4-ylmethoxy)benzyl)imidazolidin-1-yl}-butyrate

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Reaction Conditions

Reaction Steps

Ethyl 2-(3-(4-hydroxybenzyl)-2-oxoimidazolidin-1-yl)-3-methylbutyrate (50 mg; 0.15 mmol) was dissolved in DMSO (1 ml). 4-Chloromethylpyridine hydrochloride (39 mg; 0.23 mmol), potassium carbonate (86 mg; 0.62 mmol) and potassium iodide (8 mg, 0.4 mmol) were successively added thereto. The mixture was heated at 50° C. for 3 h. Cooling to RT was followed by partitioning between water (10 ml) and EtOAc (10 ml). The phases were separated and the aqueous phase was extracted with EtOAc (3×; 5 ml). The combined organic phases were dried over MgSO4, and the solvent was removed under reduced pressure. Purification of the residue by column chromatography (SiO2) resulted in ethyl 3-methyl-2-{2-oxo-3-(4-(pyridin-4-ylmethoxy)benzyl)imidazolidin-1-yl}-butyrate (45 mg; 0.11 mmol). MS: 412.50 (M+H); Rt: 1.04 min (method: gradient 0 min 96% H2O (0.05% TFA) 2.0 min 95% acetonitrile, 95% acetonitrile to 2.4 min, 4% acetonitrile 2.45 min; flow rate 1 ml/min; column 0.4 μL (YMC J'sphere ODS H80 20X2 1.4μ); 30° C.)

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