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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 527133Generated: October 25, 2026

Hydrochloric Acid → N-(5-Amino-2-hydroxy-2-(4-isopropyl-2-methoxyphenyl)-1,3-dioxo-2,3-dihydro-1H-inden-4-yl)acetamide

https://huagongshe.com/reaction/527133

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantWaterHCID 962—
ReactantN-(2-Hydroxy-2-(4-isopropyl-2-methoxyphenyl)-5-nitro-1,3-dioxo-2,3-dihydro-1H-inden-4-yl)acetamideHCID 71477131—
CatalystIronHCID 23925—
SolventEthanolHCID 702—
ProductN-(5-Amino-2-hydroxy-2-(4-isopropyl-2-methoxyphenyl)-1,3-dioxo-2,3-dihydro-1H-inden-4-yl)acetamideHCID 7147713398.1%

Reaction Steps

N-(2-hydroxy-2-(4-isopropyl-2-methoxyphenyl)-5-nitro-1,3-dioxo-2,3-dihydro-1H-inden-4-yl)acetamide (0.10 g, 0.24 mmol) was completely dissolved in anhydrous ethanol (3 ml). This solution was added with iron (0.098 g), conc. HCl (0.05 ml) and water (0.3 ml). The reaction mixture was heated for 2 hrs under reflux. After filtration at high temperature to remove iron, the filtrate was concentrated in a vacuum and purified using column chromatography (ethylacetate 100%) to afford the title compound (90 mg, 98%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09346749B2
Source datasetuspto-grants-2016_05
ORD IDord-96472b29eea344aabaea3251405c53d3
Source noteuspto-grants-2016_05