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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2108752Generated: October 29, 2026

Citric Acid → HCID 57421979, compound

https://huagongshe.com/reaction/2108752

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCitric AcidHCID 311—
ReactantSodium HydroxideHCID 14798—
ReactantHCID 57421980HCID 57421980—
SolventEthyl AcetateHCID 8857—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 57421979HCID 5742197988%

Reaction Conditions

Temperature80 °C

Reaction Steps

Ethyl 5-(1H-pyrrolo[2,3-b]pyridin-3-yl)thiophene-2-carboxylate (0.89 g, 3.3 mmol) was partly dissolved in 1,4 dioxane and 10 mL 1N NaOH added. The reaction mixture was heated to 80° C. where it became homogenous. After 2 hours the reaction mixture was cooled to room temperature, diluted with ethyl acetate, and a 10% citric acid solution. A precipitate formed which was filtered off, washed with water and dried to 0.71 g, 2.9 mmol, 88% yield.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07514448B2
Source datasetuspto-grants-2009_04
ORD IDord-02402a8cafc1426eb2315e4ad8239dde
Source noteuspto-grants-2009_04