反应详情

A slurry of 0.98 g (3.12 mmol) 1-benzyl-5-benzyloxy-1H-indole, 0.20 g 20% Palladium on carbon, and 1.51 g (24 mmol) NH4CHO was heated to reflux with stirring for 3 days. The reaction was allowed to cool and an additional 0.20 g 20% Palladium on carbon and 1.33 g NH4CHO was added. The reaction was refluxed for an additional 24 hours upon which time the reaction was complete by TLC. The reaction was filtered through paper and concentrated. The residue was chromatographed on silica using 25–40% EtOAc-hexane to afford 0.44 g 1-benzyl-5-hydroxy-1H-indole as a solid.

1. temperatureto reflux
2. temperatureto cool
3. temperatureThe reaction was refluxed for an additional 24 hours upon which time the reaction
4. filtrationThe reaction was filtered through paper
5. concentrationconcentrated
6. customThe residue was chromatographed on silica using 25–40% EtOAc-hexane