HCID 69060787, compound → Ethyl 1-ethyl-6-hydroxy-1H-indole-3-acetate

Participants

Reaction Steps

(6-Benzyloxy-1-ethyl-1H-indol-3-yl)-oxo-acetic acid ethyl ester (0.843 g, 2.40 mmol) is dissolved in anhydrous dioxane (10 mL) then purged and back filled with nitrogen a few times. Palladium on carbon (10%) (0.200 g, 20% by wt.) is added and the reaction followed by heating to reflux. Slow addition of a saturated solution of sodium hypophosphite is initiated and the reaction is monitored by TLC. After the starting material is completely consumed, the reaction is allowed to cool to room temperature, diluted with dichloromethane and celite added. The mixture is filtered through a plug of celite and the two phases are separated. The organic layer is washed with water and brine, dried over sodium sulfate, then concentrated. The residue is further purified using flash column chromatography. The (1-Ethyl-6-hydroxy-1H-indol-3-yl)-acetic acid ethyl ester (0.564 g, 2.28 mmol) is formed in 95% yield.

Provenance & Evidence