Dimethylhydantoin → HCID 22351157, compound

Participants

Reaction Steps

5,5-Dimethylimidazolidine-2,4-dione (1.28 g) was dissolved in tetrahydrofuran (20 mL), and sodium hydride (60%, in oil) (0.25 g) was added at 0° C. under ice-cooling. After stirred for 30 minutes, 2-naphthalenesulfonyl chloride (2.38 g) was added at 0° C., and the mixture was stirred at room temperature overnight. After the solvent was distilled off, ethyl acetate (150 mL) was added to the reaction solution, and the solution was washed with 1N hydrochloric acid, an aqueous saturated sodium bicarbonate solution and a saturated brine in turn. After drying over anhydrous magnesium sulfate, the solvent was distilled off. Further purification by silica gel chromatography (hexane:ethyl acetate=2:1) afforded 597 mg of white crystals.

Provenance & Evidence