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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1672329Generated: October 25, 2026

Hydrogen Peroxide → 2-amino-5-ethylbenzoic acid

https://huagongshe.com/reaction/1672329

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 Steps

The title compound is prepared by treating 24.7 g (0.141 mol) 5-ethyl-1H-indole-2,3-dione (Example 49a) with 40 ml of 30% H2O2 in 226 ml 5% sodium hydroxide solution following a procedure given by A. Baruffini et. al. in II Farmaco, Ed. Sc., 23, 3 (1968). mp: 128-129° C. (Lit.: 126° C.); MS: 166 (M++1); HPLC: tret=7.00 min (Grad 1).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07998972B2
Source datasetuspto-grants-2011_08
ORD IDord-60220c1b088d4472a0dbe7f836c61a2a
Source noteuspto-grants-2011_08