Methyl iodide → 4-(8-Methoxyimidazo[1,2-a]pyridin-3-yl)-2-(methylthio)pyrimidine-5-carbonitrile

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Reaction Steps

150 mg of the 4-(8-hydroxyimidazo[1,2-a]pyridin-3-yl)-2-(methylthio)pyrimidine-5-carbonitrile [158-1] was dissolved in 3 mL of dimethylsulfoxide, then 293 mg of potassium carbonate and 40 μL of methyl iodide were added thereto, and stirred at room temperature for 30 minutes. The reaction solution was diluted in 200 mL of chloroform, and washed with water. Then, the organic layer was dried over anhydrous magnesium sulfate. The insolubles were filtered, and the filtrate was concentrated under reduced pressure. The obtained residue was dissolved in a small amount of a mixed solvent of chloroform and methanol (chloroform:methanol=9:1), and solidified by hexane, to obtain 58 mg of 4-(8-methoxyimidazo[1,2-a]pyridin-3-yl)-2-(methylthio)pyrimidine-5-carbonitrile [158-2] as a brown solid.

Provenance & Evidence