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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1749762Generated: October 31, 2026

Water → HCID 71278900, compound

https://huagongshe.com/reaction/1749762

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantIndole-3-CarboxaldehydeHCID 10256—
ReactantSodium HydroxideHCID 14798—
Reactant5-Hydroxy-1-indanoneHCID 233147—
SolventMethanolHCID 887—
ProductHCID 71278900HCID 7127890083%

Reaction Conditions

Temperature50 °C

Reaction Steps

A solution of 5-hydroxy-2,3-dihydro-1H-inden-1-one (0.30 g, 2.0 mmol) and 1H-indole-3-carboxaldehyde (0.32 g, 2.2 mmol) in methanol (10 mL) was added with 50% sodium hydroxide (0.34 mL), and the mixture was stirred at 50° C. for 2 hours. The reaction mixture was cooled to room temperature, and then added with water, and the precipitated solid was collected by filtration, and washed with methanol to obtain (E)-2-[(1H-indol-3-yl)methylene]-5-hydroxy-2,3-dihydro-1H-inden-1-one (0.45 g, 83%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09156827B2
Source datasetuspto-grants-2015_10
ORD IDord-02b781ca8b2641779e28e8d24461a268
Source noteuspto-grants-2015_10