1,3-Dimethyl-2-imidazolidinone → HCID 12074072, compound

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Reaction Steps

To a solution of the compound prepared in Example 4 (1.87 g) and 1,3-dimethyl-2-imidazolidinone (1.7 ml) in tetrahydrofuran (THF; 20 ml), 1M lithium bis(trimethylsilyl)amide (11.4 ml; in THF) was dropped at −78° C., and then the mixture was stirred for 30 minutes at same temperature. Methoxymethyl chloride (1.2 ml) was added to the reaction mixture, and the mixture was stirred for 3 hours. The reaction mixture was diluted with a saturated aqueous solution of ammonium chloride, and warmed to room temperature, and then the solution was extracted with ethyl acetate. The extract was dried over anhydrous magnesium sulfate and concentrated. The residue was purified by column chromatography (toluene:ethyl acetate=2:1) to give the title compound (1.45 g) having the following physical data.

Provenance & Evidence