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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 392615Generated: October 30, 2026

Sodium Hydroxide → 4-Bromobenzene-1,2-diamine

https://huagongshe.com/reaction/392615

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
ReactantStannous ChlorideHCID 24479—
Reactant4-Bromo-2-nitroanilineHCID 70132—
SolventEthanolHCID 702—
Product4-Bromobenzene-1,2-diamineHCID 323593—

Reaction Steps

A solution of 4-bromo-2-nitroaniline (1.0 eq) and SnCl2(2.2 eq) in EtOH was heated at reflux for 3 hours. After this time, the solution was poured onto ice, brought to pH 10 with 2M NaOH and extracted with Et2O. The combined organic layers were dried over MgSO4 and concentrated. The resulting brown oil was purified by silica gel chromatography (0-50% EtOAc:hexanes) to provide a light yellow solid. LC/MS m/z 187.1 (MH+), Rf 1.33 minutes.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06800760B2
Source datasetuspto-grants-2004_10
ORD IDord-fd0eced62f8c4bd8926f8a9dd1f5aa4c
Source noteuspto-grants-2004_10