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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1674619Generated: November 1, 2026

Ethanol → 2-Amino-4-(3-cyanoindol-1-yl)benzoic acid

https://huagongshe.com/reaction/1674619

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantWaterHCID 962—
ReactantAmmonium ChlorideHCID 25517—
ReactantHCID 58437261HCID 58437261—
CatalystZincHCID 23994—
SolventTetrahydrofuranHCID 8028—
SolventEthyl AcetateHCID 8857—
Product2-Amino-4-(3-cyanoindol-1-yl)benzoic acidHCID 5843723127.7%

Reaction Conditions

Temperature80 °C

Reaction Steps

To a solution of 4-(3-cyanoindol-1-yl)-2-nitrobenzoic acid (0.012 g) in a mixed solvent of ethanol (1 mL), water (0.5 mL) and tetrahydrofuran (0.5 mL) were added zinc powder (0.041 g) and ammonium chloride (0.004 g) at room temperature, and this mixture was stirred at 80° C. for 2.5 hours. After cooling to ambient temperature, to this reaction mixture was added ethyl acetate. This insoluble material was removed by filtration and this filtrate was washed with brine, dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure to give the title compound (0.003 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08003647B2
Source datasetuspto-grants-2011_08
ORD IDord-af555f64c91f4df29e5eb4b49c5f9e2c
Source noteuspto-grants-2011_08