Sodium Hydroxide → HCID 67118993, compound

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Reaction Steps

Ethyl [2-(7-methoxy-5-{[5-(methylsulfonyl)pyridin-2-yl]oxy}-1H-indol-2-yl)-4,5-dihydro-1,3-thiazol-5-yl]acetate (500 mg) was dissolved in a mixture of tetrahydrofuran (5 mL) and ethanol (5 mL). To the mixture was added 1M aqueous sodium hydroxide solution (3 mL) and the mixture was stirred at room temperature for 50 min. The mixture was cooled to room temperature and concentrated under reduced pressure. The residue was dissolved in water and the mixture was washed with diethyl ether. The aqueous layer was acidified with 1M hydrochloric acid (3 mL). The mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over magnesium sulfate, filtered and concentrated. The residual solid was washed with diethyl ether to give the title compound (450 mg, 96%) as a pale yellow solid. MS 462 (MH+).

Provenance & Evidence