Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 844442Generated: October 30, 2026

Sodium Hydroxide → 5-Nitroindole-2-carboxylic acid

https://huagongshe.com/reaction/844442

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
ReactantEthyl 5-nitro-1H-indole-2-carboxylateHCID 280312—
SolventEthanolHCID 702—
Product5-Nitroindole-2-carboxylic acidHCID 35129194.4%

Reaction Steps

13 g of ethyl 5-nitro-2-indolecarboxylate are placed in 200 ml of EtOH and the solution is treated for 12 hours with 15 g of 30% NaOH solution. After evaporation of the solvent, the residue is acidified with concentrated HCl and then filtered to give 10.8 g of the expected compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06380230B1
Source datasetuspto-grants-2002_04
ORD IDord-91066413ac5e49d4a8cec32d4e5ac528
Source noteuspto-grants-2002_04