Ethyl Acetate → 1H-indol-4-ylmethanol

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반응 단계

Diisobutylaluminum hydride (1 M in toluene; 1.3 mL, 1.3 mmol) was added to a solution of 1H-indole-4-carboxylic acid, methyl ester (85 mg, 0.49 mmol) in ether (1.6 mL) at −70° C. The solution was allowed to stir at −70° C. for 1 h, then at room temperature for 1 h. Ethyl acetate (20 mL) was added, and the solution was stirred with an aqueous solution of potassium sodium tartrate (30% w/v; 20 mL) for 30 min. The layers were separated and the aqueous layer was extracted with ethyl acetate. The combined organic layers were dried (MgSO4), filtered, evaporated, and dried under high vacuum to give 1H-indole-4-methanol (73.2 mg, quantitative yield) which was used in the next step without further purification.

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