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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1725864Generated: October 26, 2026

Hydrogen Peroxide → 2-Amino-5-ethylbenzoic acid

https://huagongshe.com/reaction/1725864

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen PeroxideHCID 784—
Reactant5-ethyl-2,3-dihydro-1H-indole-2,3-dioneHCID 583487—
SolventSodium HydroxideHCID 14798—
Product2-Amino-5-ethylbenzoic acidHCID 7744486—

Reaction Conditions

Temperature50 °C

Reaction Steps

A mixture of Example 1B (11.7 g, 66.9 mmol) in 1M NaOH (300 mL) was treated dropwise with 30% aqueous hydrogen peroxide (300 mL), heated to 50° C. for 30 minutes, cooled to room temperature, and filtered. The filtrate was adjusted to pH 4 with concentrated HCl, cooled to 4° C., and filtered. The filter cake was dried under vacuum to provide the desired product (4.46 g). MS (ESI(−)) m/e 164 (M−H)−.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07491718B2
Source datasetuspto-grants-2009_02
ORD IDord-179a8685d5bd48f68bc971d541887edd
Source noteuspto-grants-2009_02