Sodium hydride → 1-{3-{Bis[4-(methoxymethoxy)phenyl]methyl}-1-(2-dimethylaminoethyl)indol-2-ylcarbonyl}-4-(2-chlorophenyl)-piperazine

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Reaction Conditions

Reaction Steps

To a solution of Compound 1 (2.0 g, 3.19 mmol) obtained in Example 1 in 30 ml of N,N-dimethylformamide was portionwise added sodium hydride (60% in oil, 270 mg, 6.71 mmol) with stirring at 0° C., and 2-dimethylaminoethylchloride hydrochloride (460 mg, 3.19 mmol) was added thereto, followed by heating to 80° C. and then stirring for one hour. A saturated aqueous solution of ammonium chloride was added to the reaction solution for neutralization, and water was added thereto followed by extraction with ethyl acetate. The resulting organic layer was washed with a saturated aqueous solution of sodium chloride and dried over magnesium sulfate, and the solvent was distilled off under reduced pressure to give 2.9 g of a crude product. The obtained crude product was purified with silica gel column chromatography (ethyl acetate/hexane=1/1-ethyl acetate alone) to give 2.1 g (yield: 94%) of the title compound.

Provenance & Evidence