2-(1-Benzenesulfonyl-5-bromo-1H-indol-2-ylmethyl)-4-(5-chloro-2,3-dihydrobenzofuran-7-yl)-1,1,1-trifluoro-4-methylpentan-2-ol → 2-(5-Bromo-1H-indol-2-ylmethyl)-4-(5-chloro-2,3-dihydrobenzofuran-7-yl)-1,1,1-trifluoro-4-methylpentan-2-ol

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Reaction Steps

A mixture of 2-(1-benzenesulfonyl-5-bromo-1H-indol-2-ylmethyl)-4-(5-chloro-2,3-dihydrobenzofuran-7-yl)-1,1,1-trifluoro-4-methylpentan-2-ol (30 mg, 0.046 mmol) in 5 mL of methanol and 5 mL of 10% aqueous sodium hydroxide solution was warmed at reflux. After 18 hours, the mixture was diluted with brine and extracted with three 7 mL portions of ethyl acetate. The combined organic layers were washed with three 5 mL portions of brine, three 5 mL portions of saturated aqueous ammonium chloride solution, 5 mL of brine, dried over magnesium sulfate, filtered, and concentrated in vacuo. The crude material was purified by preparative TLC (1 mm, silica gel, ethyl acetate-hexanes (3:7)) to afford 15 mg (63% yield) of the title compound.

Provenance & Evidence